Energizer 2450 Lithium Coin Battery, 2 Pack
4.8Editor score
Two-battery replacement pack
Up to 12-year storage life
Wide temperature operating range
Child-resistant packaging
In this guide
CR2450 lithium coin batteries are compact 3V power sources used in car key fobs, garage sensors, smart locks, watches, glucose monitors, thermometers, remote controls, and other compact electronics. A worthwhile battery should fit the device correctly, deliver dependable voltage, resist leakage, and include practical safety packaging.
The products in this guide were compared using the supplied specifications, customer ratings, pack sizes, compatibility information, storage-life claims, safety features, and intended device applications. The list includes single batteries, small replacement packs, and larger multipacks from Energizer, PHILIPS, Duracell, PGSONIC, and an additional battery specialist.
Each review explains the product's strongest qualities, limitations, and most suitable users, while the comparison table highlights practical differences. Ratings and specifications reflect the available product information, and prices can change over time, so readers should confirm current listings and device requirements before buying.
Top 3 Picks for Best CR2450 Lithium Coin Battery
PHILIPS CR2450 Battery, 5-Pack
4.7Editor score
High energy capacity
Up to 10-year storage life
Leak-proof construction
Individually packaged cells
Duracell CR2450 Lithium Battery, 1 Count
4.7Editor score
Trusted battery brand
10-year storage guarantee
Child-resistant packaging
Wide device compatibility
Top 10 Best CR2450 Lithium Coin Battery in 2026 Compared
The table below compares all ten CR2450 options by pack quantity, voltage, storage-life claim, compatibility, and notable safety or convenience features. It is designed to make it easier to match a battery to a single replacement, a household reserve, or a device that operates in changing temperatures.
ProductsSpecificationsEditor scorePrice
Best Budget
Energizer 2450, 2 Pack
2 lithium coin cells
3V lithium chemistry
Up to 12-year storage
Child-resistant packaging
4.8Editor score
Editor's Choice
PHILIPS CR2450, 5 Pack
5 lithium coin cells
3V lithium chemistry
Up to 10-year storage
Leak-proof construction
4.7Editor score
Best Premium
Duracell CR2450, 1 Count
1 lithium coin cell
3V lithium chemistry
10-year storage guarantee
Child-resistant packaging
4.7Editor score
Energizer CR2450, 6 Pack
6 lithium coin cells
3V ECR2450 model
Multi-device household use
Compact package dimensions
4.7Editor score
PGSONIC CR2450, 20 Pack
20 lithium coin cells
3V lithium chemistry
5-year shelf life
Leak-proof mercury-free
4.6Editor score
PGSONIC CR2450, 5 Pack
5 lithium coin cells
3V lithium chemistry
5-year shelf life
Sealed leak-proof coating
4.6Editor score
PGSONIC CR2450, 10 Pack
10 lithium coin cells
3V lithium chemistry
5-year shelf life
Child-secure packaging
4.6Editor score
CR2450 3V Coin Cell, 20 Pack
20 lithium coin cells
3V lithium chemistry
5-year warranty
Individually sealed blisters
4.6Editor score
Duracell 2450, 6 Count
6 lithium coin cells
3V lithium chemistry
Storage power preservation
Triple corrosion protection
4.6Editor score
PHILIPS CR2450, 5 Count
5 lithium coin cells
3V lithium chemistry
10-year storage life
Child-resistant blister packs
4.6Editor score
1. Energizer 2450, 2 Pack – Best Overall CR2450 Lithium Coin Battery
Energizer 2450, 2 Pack
3V lithium coin cell
Two batteries per pack
Up to 12-year storage
Wide operating temperature
The Energizer 2450 Lithium Coin Battery, 2 Pack combines a highly rated 4.8 customer score with a compact replacement format and an unusually long stated storage life. It is designed for 3V CR2450 devices, including heart rate monitors, remotes, keyless entry systems, glucose monitors, toys, and games. The two-battery quantity makes it convenient for immediate use without creating a large surplus.
Pros
- Highest listed customer rating
- Excellent storage-life claim
- Broad device compatibility
- Child-resistant packaging
Cons
- Only two batteries included
- Large household use needs multiples
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Its standout feature is the claim that the batteries can hold power for up to 12 years in storage. This is particularly useful for emergency or infrequently used devices because the cells can remain on hand without frequent replacement checks. The listed temperature tolerance, from approximately -22 to 140 degrees Fahrenheit, also makes this product a sensible option for key fobs, garage equipment, and devices exposed to variable indoor or outdoor conditions.
Compatibility extends beyond the CR2450 designation. The battery is also listed as a replacement for L52, DL2450, and 5029LC, giving buyers more confidence when an older device manual uses an alternate model number. Child-resistant packaging adds a meaningful safety benefit, although the small two-pack offers less stocking flexibility than options containing six, ten, or twenty cells.
This is the strongest recommendation for most buyers seeking a small, dependable replacement and the top choice for anyone who prioritizes a long storage claim. It is particularly attractive for a single key fob, sensor, or compact electronic. Buyers replacing several batteries around the home may prefer a larger pack, but for focused use, this Energizer set balances capacity, storage life, and convenience very effectively.
Long Storage Life for Spare Cells
The up-to-12-year storage claim makes this pack useful for maintaining a household emergency supply. Keeping a few compatible cells available can help address a failed sensor or key fob without making a special trip to purchase another battery.
Reliable Across Changing Temperatures
The stated -22 to 140-degree Fahrenheit range suits users whose devices may be kept in cold garages, vehicles, or changing indoor environments. Confirm that the battery compartment is dry and that the device manufacturer permits the specified chemistry before installation.
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2. PHILIPS CR2450, 5 Pack – Best for High-Energy Devices
PHILIPS CR2450, 5 Pack
3V lithium coin cell
Five batteries per pack
Up to 10-year storage
Up to 70% more power
The PHILIPS CR2450 Battery, 5-Pack earns a 4.7 customer rating and stands out for its claimed high energy capacity. It supplies 3V lithium coin cells for key fobs, garage door opener sensors, medical equipment, smart sensors, digital thermometers, scales, watches, and remote controls. Five cells offer enough supply for several devices or a practical household reserve.
Pros
- High stated energy capacity
- Useful five-battery quantity
- Leak-proof temperature performance
- Individually packaged batteries
Cons
- Longer title may confuse shoppers
- Storage term differs from Energizer
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PHILIPS states that the battery delivers up to 70% more power than standard alternatives. That performance claim, combined with stable energy for both high- and low-drain devices, makes this option particularly relevant to users who want confidence in equipment where a weak battery could interrupt a useful function. The pack also provides up to 10 years of storage life, supporting long-term emergency preparedness.
The battery is described as leak-proof and capable of reliable performance from -20 to +30 degrees Celsius. Individual packaging helps prevent loss while keeping cells separate in storage. One consideration is that its 10-year storage statement is slightly shorter than the 12-year claim on the leading Energizer option, although the difference should not outweigh the stronger capacity positioning for demanding applications.
This pack is an excellent choice for households managing several compatible devices or for anyone who prefers individually protected cells. It is also a strong match for high-drain electronics where dependable output matters. Buyers who need only one cell may find the quantity unnecessary, but for general replacement and backup use, the PHILIPS set provides one of the most balanced specifications in the guide.
Capacity for High-Drain Electronics
The claimed capacity advantage is especially relevant to sensors, medical devices, and other equipment that may draw more current than a simple remote. Actual results will vary by device, so a complete battery replacement remains the safest response to erratic behavior.
Organized Individual Storage
Keeping each cell separately packaged makes it easier to inventory replacements and reduce the chance of confusing loose coin batteries. It is also a practical way to preserve unused cells until a device actually needs them.
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3. Duracell CR2450, 1 Count – Best Trusted Single Replacement
Duracell CR2450, 1 Count
3V lithium coin cell
One battery per pack
10-year storage guarantee
Child-resistant packaging
The Duracell CR2450 Lithium Battery, 1 Count provides a focused way to replace a single coin cell while benefiting from Duracell's established battery brand. Its 4.7 customer rating indicates broad satisfaction, and the listed uses span medical devices, security devices, watches, car remotes, and general electronics. The pack is particularly convenient when only one device needs service.
Pros
- Strong customer rating
- Recognizable battery brand
- Single replacement convenience
- 10-year storage guarantee
Cons
- Only one battery included
- No multipack convenience
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Duracell describes the battery as engineered for long-lasting performance and guarantees the lithium coin batteries for 10 years in storage. That guarantee adds useful confidence for emergency kits and infrequently operated devices. Child-resistant packaging is another important feature for a product format that can be attractive to children and pets if left accessible.
The battery is explicitly equivalent to DL2450 and CR2450, which simplifies comparison with devices that use one designation or the other. The limitation is quantity: a one-cell pack solves an immediate replacement but does not provide a backup for future needs. Buyers who manage many devices may need to order this product more often than users choosing a larger multipack.
Duracell is the premium recommendation here for a single replacement where brand recognition and storage assurance carry substantial weight. It is well suited to a car key fob, watch, security device, or other item requiring one 3V lithium coin battery. For a broad household stock-up, one of the larger multipacks offers better convenience, but for one cell, this option is direct and dependable.
A Simple One-Cell Purchase
The single-battery format is ideal when a device needs one replacement and the shopper wants to avoid carrying unused cells. It also makes it easy to match the quantity directly to the task at hand.
Storage Assurance for Backup Use
The 10-year storage guarantee supports keeping one cell available for an intermittent device or emergency kit. Store it in original packaging, away from children, pets, moisture, and direct heat.
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4. Energizer CR2450, 6 Pack – Best Six-Cell Household Backup
Energizer CR2450, 6 Pack
3V ECR2450 battery
Six batteries per pack
Model ECR2450BP
Compact package dimensions
The Energizer CR2450 Lithium Battery, 3v ECR2450, Qty 6 is a practical six-cell option for people who want more replacements than a single-battery product without committing to a large multipack. It holds a 4.7 customer rating and uses the ECR2450 model designation, making it relevant to compatible 3V devices and users who recognize that industry naming variation.
Pros
- Good six-battery quantity
- High customer rating
- Recognizable Energizer name
- Useful for several devices
Cons
- Fewer listed technical details
- Storage-life claim is not specified
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The primary advantage is flexibility. Six cells can serve several key fobs, remotes, sensors, watches, or other compact electronics, while also leaving replacements available for future needs. The supplied listing identifies item package dimensions of 3.81 centimeters by 4.826 centimeters by 9.652 centimeters, and the model number is ECR2450BP. This information helps buyers assess storage needs and confirm the correct item.
Compared with the two-cell Energizer pack, this product trades some immediacy and compactness for a more useful quantity. It is also less economical per replacement than the large 20-cell listings, but six cells may be a more realistic amount for a moderate household. The supplied information does not specify a storage-life period or elaborate on packaging, so buyers who place greater importance on those claims may prefer another Energizer option.
This is a sensible choice for a household that wants a moderate reserve of familiar-brand batteries. It can cover several current needs while avoiding the storage burden of a 20-cell pack. Confirm that your devices specify a 3V CR2450 or equivalent ECR2450 battery, and inspect the package for the best-before information when it arrives.
Balanced Quantity for Multiple Devices
Six cells cover a useful middle ground between a one-cell replacement and a bulk multipack. It works well for homes with several low-drain devices or for users who prefer keeping a few spares on hand.
Verify the Correct Model
The listing uses the ECR2450 designation, a naming variation associated with CR2450 batteries. Device manuals can use several equivalent labels, but checking the printed battery requirement before opening the package helps prevent an incorrect purchase.
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5. PGSONIC CR2450, 20 Pack – Best Bulk Replacement Value
PGSONIC CR2450, 20 Pack
3V lithium coin cell
Twenty batteries per pack
5-year shelf life
Leak-proof mercury-free
The PGSONIC 20 Pack CR2450 3V Lithium Coin Battery is built for users who routinely replace small batteries or want a substantial household reserve. Its 4.6 rating reflects solid customer feedback, while the 20-cell quantity offers the largest pack in this comparison. The stated applications include flameless candles, lights, sensors, scales, remote controls, and key fobs.
Pros
- Large twenty-cell quantity
- Broad compatibility list
- Leak-proof construction
- Mercury-free chemistry
Cons
- Shorter stated shelf life
- Bulk quantity may be excessive
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PGSONIC describes the cells as reliable, high-capacity, and long-lasting, with a 5-year shelf life. The batteries are leak-proof and contain no mercury, which is useful information for users concerned about contamination or environmental compliance. Compatibility is listed for 2450, DL2450, ECR2450, GPCR2450, and CR 2450, providing broad coverage across common naming conventions.
The main tradeoff is the difference between bulk convenience and a longer storage claim. A 20-cell pack makes sense for a home with many compatible devices, property managers, or anyone who dislikes repeated small purchases. It may be excessive for one key fob, and the stated five-year shelf life is shorter than the ten- or twelve-year claims associated with some PHILIPS and Energizer options. A best-before date should guide rotation of older cells.
This package is the strongest bulk option in the guide. It offers a generous quantity, broad replacement compatibility, and explicit leak-proof and mercury-free construction. Users managing numerous devices will likely appreciate having replacements immediately available, while occasional buyers should consider one of the smaller packs to avoid unnecessary excess.
A Large Reserve for Busy Homes
Twenty cells are particularly useful in homes with multiple key fobs, sensors, watches, remotes, or flameless candles. The pack also reduces the frequency of ordering small replacement batteries throughout the year.
Broad Cross-Device Compatibility
The listed equivalent models make the pack useful across devices with different printed designations. Always prioritize the voltage, diameter, and thickness specified by the equipment manufacturer rather than relying only on the model name.
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6. PGSONIC CR2450, 5 Pack – Best Balanced Five-Cell Set
PGSONIC CR2450, 5 Pack
3V lithium coin cell
Five batteries per pack
5-year shelf life
Leak-proof sealed coating
The PGSONIC CR2450 3V Lithium Battery, 5pcs offers a convenient middle ground between a single replacement and a large inventory. The 4.6 customer rating indicates generally positive feedback, and the five-cell format suits households that use batteries in several compact devices or want a small backup supply.
Pros
- Convenient five-cell quantity
- High energy density claim
- Special sealing and coating
- Wide device compatibility
Cons
- Only five-year shelf life
- Not ideal for bulk stocking
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The product is described as Grade AA with fresh, strong, reliable power and high energy density and capacity. PGSONIC states a 5-year shelf life, along with special sealing and coating technology intended to make the cells ultra-safe and leak-proof. The batteries contain no mercury, adding another clearly stated construction attribute for buyers who compare safety information.
Applications include flameless candles, lights, remote controls, key fobs, alarm and contact sensors, and smart devices. Equivalent models include DL2450, ECR2450, GPCR2450, and CR 2450. This wide device coverage makes the pack versatile, although the shorter shelf-life statement means it should be rotated and replaced according to the package date rather than kept indefinitely.
This is a good choice for everyday household maintenance and a moderate backup. It is more practical than buying single batteries repeatedly but avoids the unnecessary surplus of a 20-cell pack. Choose it when you want a known quantity, broad compatibility, and leak-resistant construction for common household electronics.
High Energy for Everyday Devices
The high energy density and capacity claims make the cells suitable for compact smart devices, contact sensors, and other electronics that rely on consistent 3V output. Replacing a weak cell can restore normal operation in devices designed to accept a fresh coin battery.
Protective Sealing Technology
The stated special sealing and coating are designed to reduce leakage risk. Correct installation remains essential, so avoid flattening, bending, or scratching the cell and never force a battery into an incompatible compartment.
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7. PGSONIC CR2450, 10 Pack – Best Ten-Cell Household Supply
PGSONIC CR2450, 10 Pack
3V lithium coin cell
Ten batteries per pack
5-year shelf life
Child-secure packaging
The PGSONIC CR2450 Batteries, 3 Volt Lithium Coin Battery 10 Count provides a practical inventory for homes that regularly use coin cells. It carries a 4.6 customer rating and covers flameless candles, sensors, key fobs, thermometers, scales, and similar electronics. Ten cells give buyers room to replace multiple batteries without moving to the largest multipack.
Pros
- Useful ten-cell quantity
- Child-secure packaging
- Leak-free performance claim
- Wide household applications
Cons
- Shorter storage-life claim
- Some spelling irregularities
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The product listing emphasizes high capacity and leak-free performance, and specifically notes that the cells are mercury-free. A 5-year shelf life is stated, with a best-before date on the back of the package. This date is important for inventory management: rotate older cells and avoid keeping a large reserve indefinitely if the household does not use them regularly.
A child-secure package helps reduce the risk that small batteries are accessed by children or pets. That does not make loose coin batteries safe to store, so the original packaging should remain intact and be placed where it cannot be reached. The listed equivalents are ECR2450, GPCR2450, and DL2450, allowing it to fit many devices that use standard CR2450 batteries.
This ten-cell package is a good fit for medium-volume household demand, including people with multiple key fobs or a collection of small sensors. It is less economical than the PGSONIC 20-pack, yet it offers a more manageable quantity for many shoppers. Its strongest selling points are the balanced pack count, leak-free claim, and child-secure packaging.
Medium-Size Household Inventory
Ten cells are large enough to cover several devices yet small enough to store in a drawer or household battery organizer. This quantity works well for users who want fewer loose spare batteries than a 20-pack would create.
Track the Best-Before Date
The five-year shelf life begins with proper storage in the original package. Rotating cells according to the printed date helps ensure that replacement batteries are not left unused long enough to weaken in storage.
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8. CR2450 3V Coin Cell, 20 Pack – Best Individually Sealed Bulk Pack
CR2450 3V Coin Cell, 20 Pack
3V lithium coin cell
Twenty batteries per pack
5-year warranty
Individually sealed blisters
The CR2450 3V Lithium Coin Cell Button Battery, 20 Pack is a large, feature-focused option for homes, offices, and technicians who prefer sealed individual storage. It has a 4.6 customer rating and includes 20 cells. The supplied information also notes that the brand carries CR2450, CR2032, CR2025, and CR1616 batteries in several pack sizes, indicating a broad small-battery catalog.
Pros
- Twenty individually sealed cells
- CE and RoHS certified
- Nickel-plated leak-resistant design
- Broad household device support
Cons
- Generic product naming
- Only five-year storage coverage
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Each battery is described as tested under strict quality standards, CE and RoHS certified, and mercury-free. The nickel-plated construction is intended to prevent leakage and protect devices, while a five-year warranty provides additional coverage. Individual blister packaging helps prevent contact discharge during storage and makes it easy to keep unused cells separated.
The listed device compatibility is extensive, covering car key fobs, garage door openers, flameless candles, remote controls, doorbell cameras, thermometers, calculators, watches, and other products. This breadth makes the pack useful for mixed device households. The generic branding may be less reassuring than a well-known battery name, but the certifications, packaging, and warranty provide meaningful information for comparison.
This 20-pack is an attractive choice for users who prioritize organization and a large supply of sealed cells. It is especially suitable for keeping replacement batteries near multiple devices throughout a home or workplace. Buyers who place greater importance on a longer storage-life claim may prefer PHILIPS or Energizer, but this option remains a thorough and practical bulk package.
Sealed Storage Reduces Contact Risk
The individual blister packs are designed to prevent contact discharge and keep unused cells separated. This makes the pack more convenient for organized storage than a loose collection of coin batteries.
Certified Construction and Warranty
CE and RoHS certification, mercury-free construction, nickel plating, and a five-year warranty form a useful safety and quality feature set. Keep receipts and the original packaging if a warranty question arises.
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9. Duracell 2450, 6 Count – Best for Storage Power Preservation
Duracell 2450, 6 Count
3V lithium coin cell
Six batteries per pack
Duralock power preservation
Triple corrosion protection
The Duracell 2450 3V Lithium Coin Battery, 6 Count combines a six-cell quantity with Duracell's storage-focused technology. It carries a 4.6 customer rating and is positioned for buyers who want spare cells that are designed to preserve their power while sitting unused. The package is especially relevant for emergency kits, rarely used sensors, and seasonal devices.
Pros
- Trusted established brand
- Storage power preservation
- Triple corrosion protection
- Six-cell household quantity
Cons
- Limited device-use details
- No explicit shelf-life duration
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Duralock power preserve technology is the product's clearest distinguishing feature. The listing also describes high-purity lithium chemistry with triple corrosion protection, which is intended to support stable storage and dependable device operation. Six batteries make it easy to cover several compatible products or keep replacements available for future use.
Compared with the single-cell Duracell option, this pack offers more practical value for a household and reduces the need for repeated purchases. The supplied listing does not provide a precise storage duration, specific device list, or detailed packaging description, so it offers less information at a glance than some competing products. Buyers seeking a clearly stated shelf life or temperature range may prefer the PHILIPS or Energizer listings.
This Duracell six-count is a solid choice for users who value the brand's storage preservation claims and want a moderate number of replacements. It is well suited to keeping a few cells in different parts of the home. Verify the required 3V CR2450 specification and store the pack in its original packaging under moderate conditions.
Power Preservation During Storage
Duralock technology is intended to help maintain usable power in cells that are not continuously connected to a device. This makes the pack a logical choice for emergency supplies and infrequently used electronics.
Corrosion Protection for Storage
Triple corrosion protection supports a more dependable shelf presence, although proper storage remains essential. Keep the cells dry, away from extreme heat, and in packaging that prevents accidental contact or swallowing hazards.
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10. PHILIPS CR2450, 5 Count – Best for Family-Safe Storage
PHILIPS CR2450, 5 Count
3V lithium coin cell
Five batteries per pack
10-year storage life
Child-resistant blister packs
The PHILIPS 3V Lithium CR2450 Coin Cell Batteries 5 Count is a strong option for households that prioritize storage life, leak resistance, and child-resistant storage. It carries a 4.6 customer rating and includes five individually sealed cells. The stated uses include car key fobs, smart locks, garage door openers, glucose meters, scales, thermostats, watches, and LED lights.
Pros
- Retains over 90% capacity
- ASTM and CPSC packaging certification
- Wide temperature operating range
- Individually sealed batteries
Cons
- Similar to another PHILIPS listing
- Only five batteries included
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Its most impressive specification is the claim that the batteries retain more than 90% of capacity after 10 years of sealed storage. The product also uses non-toxic, leak-proof shells without heavy metals. Together, these features make the pack appealing for long-term backup reserves and households that want to reduce the chance of finding depleted cells during an emergency.
PHILIPS states that the batteries operate from -4 to 140 degrees Fahrenheit, covering many common indoor and vehicle conditions. ASTM and CPSC-certified child-resistant blister packs add a clear family-safety benefit. The five-pack format is less substantial than the PGSONIC bulk options, but individual sealing and a 10-year storage claim give it a more specialized role.
This listing is a compelling choice for consumers who want a moderate reserve and place a high value on child safety, leakage resistance, and long storage. It is particularly suitable for smart-home devices, key fobs, and medical equipment. Confirm the device's battery requirements and use only the manufacturer-recommended battery type.
Long-Term Capacity Retention
The claim of more than 90% capacity after 10 years of sealed storage makes this option useful for emergency reserves. Keep cells in their original blister packs and store them within moderate conditions to protect that long-term performance.
Child-Resistant Individual Packaging
ASTM and CPSC-certified child-resistant packaging helps reduce accidental access to small cells. The packaging is only one layer of protection, so it should also be kept out of reach of children and pets and disposed of responsibly.
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Buying Guide – How to Choose the Best CR2450 Lithium Coin Battery
Choosing a CR2450 battery involves balancing exact physical compatibility, electrical requirements, pack quantity, storage life, leakage resistance, and safety packaging. The following factors help narrow the options without overlooking the differences between general-purpose replacements and batteries intended for particular environments.
Confirm the Battery Designation
CR2450 is a standardized designation for a 3V lithium coin or button cell, but device manuals may use alternatives such as DL2450, ECR2450, GPCR2450, 5029LC, or L52. Check the battery compartment, the device manual, or the markings on the old battery before ordering. The physical size and electrical specification must align, because a similar-looking coin cell can have a different diameter, thickness, or voltage. A designation alone should not override the manufacturer's explicit battery requirement.
The model ECR2450BP used by one Energizer listing illustrates why shoppers should be comfortable with common naming variations. Compare the complete printed requirements and avoid assuming that every battery with 2450 in its name is interchangeable. When uncertain, pause and verify the manual rather than forcing a cell into the compartment.
Match Voltage and Chemistry
CR2450 devices are designed for 3V lithium chemistry. Using the specified chemistry helps provide stable output and avoids problems associated with mixing battery types. All products in this guide are listed as 3V lithium coin cells, so the main task is to confirm that the battery is the correct physical model rather than a CR2032, CR2025, or another similarly named size.
Do not combine lithium coin batteries with rechargeable alternatives unless the device manufacturer explicitly permits it. Do not use a non-rechargeable battery in a charger designed for rechargeable cells. If a device uses more than one cell, replace all of them with the same type, age, and usage condition to reduce uneven performance.
Select the Right Pack Quantity
Pack quantity should reflect how many devices you use and how often replacements are needed. Single-cell and two-cell packs suit immediate replacements, while five- and six-cell options create a practical household reserve. Ten- and twenty-cell packages are more appropriate for multiple key fobs, sensors, watches, remotes, flameless candles, offices, or property-maintenance use. A large pack is not automatically the most convenient choice if it creates years of unused inventory.
For occasional buyers, a smaller pack often reduces excess. For households with many compatible devices, bulk packaging can simplify maintenance. Whichever size you choose, inspect the best-before information and rotate older cells so replacements are used while their storage performance remains strong.
Prioritize Storage Life
Storage life matters most for emergency kits, seasonal devices, and batteries that remain unused in a drawer. The guide includes products claiming 10 years, 12 years, and 5 years of shelf life. Longer claims can be helpful, but correct storage is just as important: keep coin cells in original packaging, away from moisture, direct sunlight, high heat, and mechanical damage.
A best-before date does not mean a cell will stop working on that exact day. It indicates a period under recommended storage conditions after which remaining capacity may be less consistent. If a household uses only one or two cells a year, buying a moderate pack and rotating it is usually more practical than accumulating a very large reserve.
Consider Leakage Resistance
Leakage resistance is particularly important in enclosed battery compartments, medical devices, security equipment, and electronics that would be damaged by fluid. Several options in this guide explicitly describe themselves as leak-proof, including products with nickel-plated construction, special sealing, protective coatings, or leak-proof shells. These claims make leakage resistance a useful point of comparison, although correct handling remains essential.
Avoid mixing fresh and aged batteries, installing a cell backward, puncturing the wrapper, or pressing a battery into an incompatible holder. If a device is already showing corrosion, remove the old cell according to the manufacturer's instructions and have the compartment checked before installing a replacement.
Assess Temperature Requirements
Temperature performance matters for car key fobs, garage sensors, outdoor monitors, and devices kept in vehicles. The products in the guide make varied temperature claims, including wide ranges extending into freezing conditions and up to 140 degrees Fahrenheit. Choose a battery whose stated operating range covers the device's real environment rather than relying on a generic indoor assumption.
Extreme heat can shorten service life even when a battery is within its stated range, and cold can temporarily reduce available output. For vehicles parked in direct sun, select a fresh cell and avoid leaving spare batteries in a hot glove compartment. For outdoor sensors, follow the equipment maker's replacement interval and storage guidance.
Review Safety Packaging
Child-resistant and child-secure packaging can provide an important barrier against accidental access to coin cells. Energizer, Duracell, PHILIPS, and PGSONIC options in this guide feature some form of child-oriented packaging, with the PHILIPS 5 Count also specifying ASTM and CPSC certification. These features are especially helpful in homes with young children or pets, but packaging should never be left where it can be reached.
Keep small batteries secured in their original packaging and use a locked or high location for storage. A child-resistant package is not a substitute for supervision or proper disposal. If a battery is swallowed, seek urgent medical guidance rather than waiting for symptoms.
Balance Brand and Specifications
Recognizable brands can be reassuring because their listings often provide detailed storage-life guarantees, packaging information, and compatibility claims. However, the best choice is not determined by the name alone. Compare quantity, stated capacity, shelf life, temperature range, leakage resistance, and safety packaging against the devices you actually need to power.
The Duracell options emphasize trusted-brand ownership and storage preservation, the PHILIPS products emphasize long storage life and capacity or safety, Energizer offers both a two-cell premium-style convenience pack and a six-cell household option, and PGSONIC provides useful multipacks at different quantities. Select the listing that best supports your device mix and replacement habits.
How to Use and Care for Your CR2450 Lithium Coin Battery
Begin by confirming that the device calls for a 3V CR2450 or an explicitly listed equivalent. Switch the device off if its instructions permit, remove the old battery, and note the orientation, with the positive side normally facing outward in a coin-cell compartment. Use the replacement promptly and avoid touching the flat surfaces excessively because oils from your fingers can interfere with electrical contact.
Insert the new battery in the marked direction without forcing it. Reassemble the cover and test the device. If it does not respond, remove the battery and confirm that the compartment is clean and the polarity is correct rather than repeatedly reinstalling the same cell. For medical devices, follow the device maker's replacement guidance and the stated service life; an apparently healthy battery may no longer support accurate readings.
Store unused cells in their original packaging in a dry place at moderate room temperature. Keep them away from children, pets, metal objects, moisture, and excessive heat. Roll older cells to the front of the inventory, respect the best-before date, and dispose of used coin cells through a battery-recycling program where available.
Frequently Asked Questions
Is CR2450 the same as DL2450?
CR2450 and DL2450 are commonly used as equivalent designations for compatible 3V lithium coin cells. Device manufacturers can also list ECR2450, GPCR2450, L52, or 5029LC, but you should verify the complete battery specification in the device manual. Never force a battery into a compartment or rely on appearance alone, because battery dimensions and contact arrangements can differ.
Can I use a CR2450 battery in a device that takes a CR2032?
Usually not. CR2450 and CR2032 cells can both be 3V lithium batteries, but they have different physical dimensions, and the larger CR2450 may not fit properly. A battery that is too thick can create pressure, damage the compartment, or prevent the cover from closing. Use the exact size and model specified by the device manufacturer.
How long should a CR2450 battery last in storage?
The products in this guide carry stated shelf lives ranging from five years to 12 years, depending on the listing. Storage life depends on keeping the cell sealed, dry, and away from extreme temperatures. Rotate batteries according to the best-before date, because a longer claimed shelf life does not mean the cell should remain unused indefinitely.
Why does my car key fob work intermittently after a new battery is installed?
Intermittent operation can result from incorrect polarity, poor contact, a depleted or incompatible battery, moisture, or a problem elsewhere in the fob. Remove the new cell, confirm the required model and orientation, and clean the contacts only as directed by the manufacturer. If the problem continues, the remote, transmitter, or vehicle receiver may need separate diagnosis.
Can CR2450 batteries be recharged?
No, standard CR2450 lithium coin cells are non-rechargeable. Using them in a charger intended for rechargeable batteries can cause leakage, overheating, or damage. Only use a battery type specifically approved for a rechargeable device, and never mix rechargeable and non-rechargeable cells in the same compartment unless the manufacturer expressly allows it.
Are all five batteries in a multipack equally fresh?
Multipacks are generally manufactured as a single batch and should have similar production dates, but the packaging may not identify every cell separately. Check the package for a best-before date and keep the unused cells sealed. If one cell behaves differently from the others, remove it and test the device with another cell from the same pack.
What should I do if a coin battery leaks?
Avoid touching the leaking material directly, and follow the device manufacturer's instructions for removing a compromised cell. Ventilate the area if needed, clean compatible surfaces as directed, and keep spent batteries away from children and pets. If exposure or ingestion occurs, contact a medical professional or poison-control service promptly.
Is a larger CR2450 multipack always more useful?
A larger multipack is most useful for households or workplaces managing several compatible devices. Someone replacing one key-fob battery may prefer a two-cell or five-cell pack because it creates less unused inventory. The right choice depends on the number of devices, replacement frequency, storage conditions, and the value of individual or child-resistant packaging.
Final Thoughts on Choosing the Best CR2450 Lithium Coin Battery
The Energizer 2450 two-pack is the strongest all-around choice for an immediate replacement, combining the highest listed rating with a long storage claim, wide temperature range, and child-resistant packaging. The PHILIPS five-pack is the editor's choice for shoppers who prioritize claimed energy capacity and organized storage, while the Duracell single cell is a trusted premium option for one device.
Before ordering, prioritize exact model compatibility, correct voltage, and the device maker's instructions. After that, choose a pack quantity that matches your household's needs, consider how the battery will be stored, and favor clear leakage and safety information. Larger PGSONIC packs and the twenty-cell specialist option are useful when maintaining many devices, while a moderate five- or six-cell pack often offers the best balance.
Ratings, packaging details, and current prices can change, so review the latest listing before making a purchase. Check the best-before date, retain the original packaging, and store unused batteries responsibly. With those considerations in mind, you can choose a CR2450 battery that fits both the device and the way your household stores and uses small batteries.