Energizer 2450 Lithium Coin Battery, 2 Pack
4.8Editor score
Two-battery household pack
Up to 12-year storage
Child-resistant packaging
In this guide
CR2450 lithium coin batteries quietly power everything from car key fobs and garage sensors to medical devices, kitchen scales, watches, and smart-home equipment. A dependable cell should provide stable 3-volt output, resist leakage, fit the intended device, and remain ready for use during extended storage without making battery selection more complicated.
We compared the 10 listed products using their stated voltage, pack quantity, compatibility, storage claims, safety packaging, temperature performance, and intended device applications. The guide includes options from Energizer, Philips, Duracell, PGSONIC, and other sellers, with particular attention to practical differences in capacity and household convenience.
Each review shows why a product stands out, while the comparison table makes pack sizes and core specifications easier to scan. The top picks represent the strongest balance of value, established-brand confidence, and features such as extended storage life, child-resistant packaging, and broad device compatibility. Product prices can change, so confirm current listings before purchasing.
Top 3 Picks for Best CR2450 Lithium Coin Battery
Duracell CR2450 Lithium Battery, 1 Count
4.7Editor score
Trusted battery brand
10-year storage guarantee
Child-resistant package
PHILIPS 3V Lithium CR2450 Coin Cell Batteries 5 Count
4.6Editor score
Five individually sealed cells
10-year storage claim
Certified child-resistant packaging
Top 10 Best CR2450 Lithium Coin Battery in 2026 Compared
The comparison below highlights pack quantity, voltage, storage life, and key safety or compatibility features across all 10 products, making it easier to identify the right option for a single replacement or a household reserve.
ProductsSpecificationsEditor scorePrice
Best Budget
Energizer 2450 Lithium Coin Battery, 2 Pack
3V lithium coin cell
Two batteries per pack
Up to 12-year storage
Child-resistant packaging
4.8Editor score
Editor's Choice
PHILIPS CR2450 Battery, 5-Pack
3V lithium coin cell
Five batteries per pack
10-year storage life
Individually packaged batteries
4.7Editor score
Best Premium
Duracell CR2450 Lithium Battery, 1 Count
3V lithium coin cell
One battery per pack
10-year storage guarantee
Child-resistant packaging
4.7Editor score
Energizer CR2450 Lithium Battery, Qty 6
3V ECR2450 battery
Six batteries per pack
Model ECR2450BP
Compact package dimensions
4.7Editor score
PGSONIC 20 Pack CR2450 3V
3V lithium coin cell
Twenty batteries per pack
Five-year shelf life
Leak-proof construction
4.6Editor score
PGSONIC CR2450 3V, 5 Pieces
3V lithium coin cell
Five batteries per pack
Five-year shelf life
Zero-mercury sealed design
4.6Editor score
PGSONIC CR2450 Batteries, 10 Count
3V lithium coin cell
Ten batteries per pack
Five-year shelf life
Child-secure packaging
4.6Editor score
CR2450 3V Button Battery, 20 Pack
3V lithium coin cell
Twenty batteries per pack
Five-year warranty
CE and RoHS certified
4.6Editor score
Duracell 2450 3V, 6 Count
3V lithium coin cell
Six batteries per pack
Duralock power preservation
Triple corrosion protection
4.6Editor score
PHILIPS 3V CR2450, 5 Count
3V lithium coin cell
Five individually sealed cells
10-year storage life
Certified child-resistant packaging
4.6Editor score
1. Energizer 2450 Lithium Coin Battery, 2 Pack – Best Overall Value
Energizer 2450 Lithium Coin Battery, 2 Pack
3-volt lithium cell
Two-battery pack
Up to 12-year storage
Child-resistant packaging
The Energizer 2450 Lithium Coin Battery, 2 Pack is the most versatile choice in this guide and earned a 4.8 customer rating, the highest among the listed products. It combines a familiar battery brand with child-resistant packaging, a claimed storage life of up to 12 years, and compatibility with a wide range of household and specialty devices.
Pros
- Highest listed customer rating
- Long stated storage life
- Works across many devices
- Wide operating temperature range
- Convenient two-pack quantity
Cons
- Only two batteries included
- No stated capacity value
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Its primary strength is flexibility. The stated replacement applications include heart rate monitors, glucose monitors, remotes, keyless entry systems, toys, and games. That makes the two-pack useful for maintaining several small electronics rather than replacing only one cell. Each battery is identified as a 3-volt lithium coin cell with CR2450 and IEC CR2450 sizing, plus compatibility with L52, DL2450, and 5029LC designs.
The pack is also designed for storage resilience. Energizer states that the batteries can hold their power for up to 12 years in storage and operate across a wide temperature range. These are manufacturer claims rather than independent test results, but they make the option appealing for emergency kits, infrequently used sensors, and devices kept in garages or vehicles.
The obvious limitation is quantity. Two cells suit a current replacement or a small household reserve, but buyers with several compatible devices may need a larger multipack. Even so, the combination of the highest listed rating, established-brand familiarity, broad compatibility, and child-resistant packaging makes this Energizer set the strongest overall value pick.
Long-Term Storage for Backup Batteries
The stated storage life of up to 12 years is particularly useful for emergency supplies and devices that are only operated occasionally. Keeping a compatible spare on hand can help avoid the inconvenience of a dead key fob, sensor, or remote when no replacement is readily available.
Useful Compatibility Across Household Devices
Stated compatibility with heart rate monitors, glucose monitors, keyless entry systems, remotes, toys, and games gives this pack broad practical appeal. The listed L52, DL2450, and 5029LC equivalents also make model matching easier for shoppers familiar with alternative CR2450 markings.
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2. PHILIPS CR2450 Battery, 5-Pack – Best Versatile Household Pack
PHILIPS CR2450 Battery, 5-Pack
3-volt lithium cell
Five-battery pack
10-year storage life
Individually packaged cells
The PHILIPS CR2450 Battery, 5-Pack combines a 4.7 customer rating with a practical five-cell quantity and individually packaged batteries. It is an attractive choice for households that use coin cells in several places, including car key fobs, garage sensors, medical equipment, thermometers, scales, and remote controls.
Pros
- Five individually packaged cells
- High stated energy capacity
- Broad everyday device compatibility
- Leak-resistant operating design
- 10-year storage life
Cons
- Temperature claim is narrower
- No child-resistant claim stated
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Philips claims reliable power for up to 10 years in storage and says the battery provides up to 70% more power than standard alternatives. That performance claim makes this option interesting for both high- and low-drain equipment. Individual packaging helps prevent batteries from being lost or contacting one another during storage, which is especially useful when keeping cells in a drawer, toolbox, or emergency kit.
The listing describes the cells as leak-proof and suitable for temperatures from -20°C to +30°C. Buyers should interpret that as the manufacturer's stated operating range and consider it carefully for equipment exposed to more extreme conditions. Unlike the top-ranked Energizer listing, this Philips product does not specifically advertise child-resistant packaging, so families with young children should keep unused cells inaccessible.
Five cells provide a better household reserve than the two-pack Energizer option without reaching the size of a 10- or 20-cell bundle. The 4.7 rating, generous stated capacity, individual packaging, and broad device support justify the Editor's Choice designation for shoppers seeking a balanced multipack.
Individual Packaging for Better Organization
Individually packaged batteries are easier to identify, carry, and store without confusing them with other coin cells. The format is also helpful when a user wants to keep a spare for several different devices rather than opening an entire multipack at once.
Capacity for Mixed-Drain Electronics
The claimed capacity advantage is relevant to a diverse device collection that may include both medical equipment and simple remote controls. Philips also identifies garage sensors, smart sensors, watches, and digital thermometers as compatible applications, reducing the need for several different battery types.
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3. Duracell CR2450 Lithium Battery, 1 Count – Best Trusted Single Replacement
Duracell CR2450 Lithium Battery, 1 Count
3-volt lithium cell
Single-battery package
10-year storage guarantee
Child-resistant packaging
The Duracell CR2450 Lithium Battery, 1 Count is a straightforward choice for a customer who needs exactly one replacement. Its 4.7 customer rating, recognizable brand, child-resistant packaging, and 10-year storage guarantee give it a confident profile for key fobs, watches, car remotes, medical devices, and security equipment.
Pros
- Widely recognized battery brand
- Clear 10-year storage guarantee
- Child-resistant package
- Suitable for medical devices
- Simple single replacement format
Cons
- One battery per purchase
- No detailed temperature range
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Duracell describes the cell as engineered for long-lasting performance and lists DL2450 and CR2450 as equivalent designations. That clear model language is helpful because shoppers may encounter several naming conventions. The guarantee covering 10 years in storage also distinguishes the product from listings that simply advertise a shelf life without framing it as a guarantee.
This is not the most economical choice for equipping an entire household, since the package contains only one battery. The listing also provides less detail about temperature tolerance and energy capacity than some competing descriptions. Nevertheless, the cell's reputation for consistent performance and its child-resistant packaging can provide confidence where reliability is more important than bulk convenience.
This Duracell option is best for a single urgent replacement, a trusted battery for a vital device, or a shopper who prefers a recognized brand with a long storage guarantee. It also serves as a sensible first purchase before deciding whether to stock a larger multipack for recurring household demand.
Dependability for Important Everyday Devices
The listing specifically mentions medical devices, security devices, and electronics alongside common car and household uses. Those applications benefit from a mature, widely recognized battery brand and clear storage assurance, although actual device life can vary with usage, temperature, and battery condition.
Child-Resistant Storage Packaging
The stated child-resistant packaging helps address one of the most important handling concerns with small lithium cells. It does not make the battery safe to swallow, but it can reduce the chance of accidental access when a household includes curious children.
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4. Energizer CR2450 Lithium Battery, Qty 6 – Best Six-Cell Household Backup
Energizer CR2450 Lithium Battery, Qty 6
3-volt ECR2450 cell
Six-battery pack
Model ECR2450BP
Compact package size
The Energizer CR2450 Lithium Battery, Qty 6 is a useful middle ground between a small replacement pack and a large bulk bundle. It holds a 4.7 customer rating and provides six 3-volt ECR2450 cells, giving households enough inventory to service several compatible devices at once.
Pros
- Six cells suit multiple devices
- Recognized Energizer branding
- Standard 3-volt output
- Useful bulk replacement quantity
Cons
- Limited stated feature information
- No storage-life figure provided
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The model number is listed as ECR2450BP, which can help buyers confirm that they are selecting the right lithium coin format. The package dimensions are 3.81 centimeters long, 4.826 centimeters wide, and 9.652 centimeters high, making the product relatively compact for a six-cell set.
Compared with the more detailed Energizer two-pack, this listing supplies less information about storage life, temperature range, and packaging safety. That limits how deeply its long-term performance can be evaluated from the stated specifications. It is still a sensible choice for a customer who values a known brand and needs several cells without moving to a 10- or 20-cell pack.
The six-cell format is especially useful for homes with multiple key fobs, sensors, remotes, watches, or small appliances that accept CR2450 cells. It provides more flexibility than purchasing separate single batteries while remaining manageable for a drawer, office, or vehicle emergency kit.
Practical Quantity for Multi-Device Homes
Six cells can cover several common household uses without creating the bulk of a much larger multipack. This makes the set useful for keeping replacements together near entry points, workspaces, or other locations where compatible electronics are regularly used.
Clear Model Identification
The stated ECR2450BP model number gives shoppers a specific designation to compare with device requirements. Confirming the model before ordering is particularly valuable because coin cells with similar diameters can still differ in thickness, voltage, or intended use.
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5. PGSONIC 20 Pack CR2450 3V – Best Bulk-Size Battery Reserve
PGSONIC 20 Pack CR2450 3V
3-volt lithium cell
Twenty batteries per pack
Five-year shelf life
Leak-proof mercury-free design
The PGSONIC 20 Pack CR2450 3V Lithium Coin Battery is the largest quantity among the products compared and carries a 4.6 customer rating. It is designed for households, offices, technicians, or anyone who wants a substantial reserve of 3-volt lithium coin cells in one purchase.
Pros
- Large twenty-cell quantity
- Compatible with many device types
- Leak-proof construction
- Zero-mercury battery design
- Five-year shelf-life claim
Cons
- Five-year shelf life
- More cells than many households need
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The listing emphasizes reliable, high-capacity performance and a five-year shelf life. It also states that the batteries are leak-proof and contain zero percent mercury. A broad device list includes flameless candles, lights, sensors, scales, remote controls, and key fobs, while the compatibility list covers 2450, DL2450, ECR2450, GPCR2450, and CR 2450 markings.
A twenty-cell pack may be more than a single household needs, but the quantity becomes practical for shared spaces, maintenance supplies, or devices that are consumed in higher numbers. Its storage claim is shorter than the 10- and 12-year claims associated with several premium-brand options, which may matter to buyers building a long-term emergency supply.
This PGSONIC set is therefore best suited to value-focused bulk purchasing and frequent replacement. It combines useful model compatibility, a broad application list, and leak-resistant construction, but buyers who only need one or two cells may find smaller packs more convenient.
A Reserve for Frequent Replacements
Twenty cells are especially useful where multiple compatible electronics are used throughout a home, workshop, office, or property. The pack reduces the need for repeated individual purchases and provides a convenient stock for replacing cells as their useful service life ends.
Broad Model Compatibility
The stated equivalents include 2450, DL2450, ECR2450, GPCR2450, and CR 2450, giving the buyer several familiar naming options. Device documentation should still be checked because a similar model number does not guarantee identical dimensions or electrical characteristics.
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6. PGSONIC CR2450 3V, 5 Pieces – Best Compact Five-Battery Option
PGSONIC CR2450 3V, 5 Pieces
3-volt lithium cell
Five-battery pack
Five-year shelf life
Grade AA construction
The PGSONIC CR2450 3V Lithium Battery, 5pcs offers a compact five-cell format and a 4.6 customer rating. It is a practical middle option for customers who want more than one replacement but do not need a large inventory.
Pros
- Convenient five-cell quantity
- High energy-density claim
- Leak-proof sealed design
- Wide range of device uses
- Mercury-free construction
Cons
- Shorter stated shelf life
- No child-secure packaging claim
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The listing describes these as grade AA batteries with fresh, reliable power, high energy density, and high capacity. It also reports a five-year shelf life, special sealing and coating technology, and a leak-proof, zero-mercury design. Those details suggest that safety and consistent output are the main selling points.
Compatible applications include flameless candles, lights, remote controls, key fobs, alarm and contact sensors, and smart devices. Equivalent designations include DL2450, ECR2450, GPCR2450, and CR 2450. This broad list is helpful for households that use CR2450 cells across several categories rather than in only one device.
The product does not advertise child-secure packaging, and its stated storage period is shorter than those of the leading Energizer and Philips choices. Those are reasonable trade-offs for buyers who want a smaller, value-oriented pack. The five-cell count makes this model convenient for a vehicle, desk drawer, or mixed household supply.
Small Pack with Everyday Versatility
Five cells provide enough supply for several small devices while remaining easy to store and carry. That balance is useful for customers who dislike carrying a 10- or 20-cell pack but want to avoid buying single batteries repeatedly.
Sealing and Coating Technology
The stated special sealing and coating technology focuses on leak resistance and dependable power. As with all coin cells, correct installation and proper storage remain important, and a battery should be removed from a device if it develops visible damage or leakage.
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7. PGSONIC CR2450 Batteries, 10 Count – Best Balanced Ten-Cell Supply
PGSONIC CR2450 Batteries, 10 Count
3-volt lithium cell
Ten-battery pack
Five-year shelf life
Child-secure packaging
The PGSONIC CR2450 Batteries, 3 Volt Lithium Coin Battery 10 Count occupies a useful middle position in pack size. Its 4.6 rating, ten-cell quantity, and child-secure packaging make it appealing for families that want a meaningful reserve without committing to the largest available multipack.
Pros
- Useful ten-cell quantity
- Child-secure package
- Leak-free performance claim
- Mercury-free battery construction
- Wide device compatibility
Cons
- Five-year stated shelf life
- No explicit temperature range
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The product is intended for flameless candles, sensors, key fobs, thermometers, scales, and similar electronics. It is described as leak-free and mercury-free, with equivalencies to ECR2450, GPCR2450, and DL2450. A five-year shelf life and a best-before date printed on the back of the package help buyers organize longer-term stock.
The child-secure package is an important distinction from some other five- and ten-cell options in the guide. Small lithium coin cells present a serious ingestion hazard, so packaging that helps restrict access is valuable in homes with children or pets. It does not change the need to keep loose batteries away from animals and to follow local battery-disposal guidance.
This ten-cell pack is best for households with several compatible devices or for keeping a moderate emergency reserve. It provides more flexibility than a five-cell purchase and less unnecessary bulk than a twenty-cell bundle, while maintaining a competitive 4.6 customer rating.
Child-Secure Packaging for Busy Homes
The stated child-secure package helps reduce accidental access to the small cells. Households should still store unused batteries in a secure location, dispose of used cells promptly, and contact emergency services or a poison control center if ingestion is suspected.
Useful Quantity and Shelf-Life Balance
Ten cells provide a sensible reserve for frequently used remotes, sensors, and key fobs without creating an oversized storage package. The five-year shelf life makes the set appropriate for regular household backup, though it is shorter than the longest storage claims in the guide.
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8. CR2450 3V Button Battery, 20 Pack – Best Feature-Rich Bulk Option
CR2450 3V Button Battery, 20 Pack
3-volt lithium cell
Twenty-battery pack
Five-year warranty
CE and RoHS certified
The CR2450 3V Lithium Coin Cell Button Battery, 20 Pack combines a 4.6 customer rating with one of the most detailed product descriptions in the guide. It offers twenty cells, individually sealed blister packaging, CE and RoHS certification, and a stated five-year warranty.
Pros
- Detailed quality-control claims
- Sealed blister packaging
- Leak-resistant nickel construction
- Broad device compatibility
- Five-year product warranty
Cons
- Generic brand presentation
- Twenty cells may be excessive
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Its engraved nickel-plated construction is presented as a leak-resistant design, while the packaging is intended to prevent contact discharge during storage. The listing also states that each battery is tested under quality-control standards and arrives ready for use. These details are particularly relevant for a bulk purchase because each cell remains separated from the others.
Compatible applications include car key fobs, garage door openers, flameless candles, remote controls, doorbell cameras, thermometers, calculators, and watches. The seller also offers other common 3-volt coin-cell formats, but the reviewed item is specifically the CR2450 20-pack, so buyers should verify the correct type before ordering.
This option is strongest for buyers who want generous quantity, protective storage, and a warranty-backed product. The absence of a prominent brand name may be a drawback for shoppers who prioritize established-brand identity, and twenty cells can be unnecessary for a single replacement. Even so, the certification, sealed packaging, and broad use list make it a thorough bulk option.
Protective Packaging for Long Storage
Sealed blister packaging keeps each cell physically separated and is designed to reduce contact discharge during storage. It also makes it easier to count remaining batteries, which is useful for maintenance kits where several coin-cell types may be stored together.
Construction Designed Around Leak Resistance
The engraved nickel-plated construction is specifically presented as helping prevent leakage and protecting the device. Correct polarity, clean contacts, and prompt replacement of exhausted cells remain necessary to maintain that safety and performance.
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9. Duracell 2450 3V, 6 Count – Best Trusted Multi-Device Backup
Duracell 2450 3V, 6 Count
3-volt lithium cell
Six-battery pack
Duralock power preservation
Triple corrosion protection
The Duracell 2450 3V Lithium Coin Battery, 6 Count is a well-known-brand option for shoppers who want more than a single replacement. It carries a 4.6 customer rating and includes six cells, making it appropriate for key fobs, watches, remotes, and other compatible electronics.
Pros
- Recognized battery manufacturer
- Six-cell household quantity
- Power-preservation technology
- Triple corrosion protection
- Medical and office brand appeal
Cons
- Fewer application details
- No explicit child-resistant claim
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Its key distinguishing feature is Duralock power-preservation technology, which Duracell says helps preserve power during storage. The product also uses high-purity lithium and triple corrosion protection, both intended to support dependable service and reduce deterioration while cells are kept for later use.
Duracell highlights its standing among pharmacists and medical and office professionals. That brand trust is relevant for a battery used in a health-related device, although buyers should always follow the device manufacturer's guidance and replace batteries according to its recommended schedule.
The listing provides less information about specific compatible devices and child-resistant packaging than several competing products. Even so, six cells, established-brand recognition, and a storage-preservation feature make it a solid choice for households that prefer a moderate bulk pack from a familiar manufacturer.
Preserving Power During Storage
Duralock power-preservation technology is designed to reduce deterioration while the battery is not being used. That makes the pack more relevant for backup cells kept in a home drawer, office, vehicle, or maintenance kit rather than consumed immediately.
Corrosion Protection for Device Contacts
Triple corrosion protection is a meaningful feature in a product intended for long storage and intermittent use. It cannot eliminate all leakage risk, so cells should still be installed correctly, kept away from extreme conditions, and replaced if the casing becomes damaged or discolored.
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10. PHILIPS 3V CR2450, 5 Count – Best Safety-Focused Five-Pack
PHILIPS 3V CR2450, 5 Count
3-volt lithium cell
Five-battery pack
10-year storage life
Certified child-resistant packaging
The PHILIPS 3V Lithium CR2450 Coin Cell Batteries 5 Count is a safety-focused multipack with a 4.6 customer rating. Its most notable feature is ASTM- and CPSC-certified child-resistant blister packaging, which helps keep small cells away from young children.
Pros
- ASTM and CPSC certified packaging
- Ten-year sealed-storage claim
- Leak-proof non-toxic shell
- Broad smart-home compatibility
- Individually sealed batteries
Cons
- Long manufacturer performance claims
- Five cells may suit moderate use
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The listing states that each battery retains more than 90% of capacity after 10 years of sealed storage and provides stable 3-volt output until fully used. It also describes a non-toxic, leak-proof shell without heavy metals. These are manufacturer claims, so individual results will vary with storage conditions, device draw, and temperature.
The stated operating range is -4°F to 140°F, broader and more clearly expressed than the range given for the other five-pack Philips listing. Applications include car key fobs, smart locks, garage door openers, glucose meters, scales, thermostats, watches, and LED lights, which gives the pack broad household appeal.
This version is especially attractive to families prioritizing child safety, extended storage, and sealed individual cells. It also works well for a whole-home replacement set without excessive bulk. The detailed safety and retention claims are compelling, but buyers should still store unused cells securely and dispose of them properly.
Certified Child-Resistant Blister Packs
ASTM and CPSC certification adds a clear safety-oriented distinction to the product description. The packaging is designed to make small cells harder for young children to access, although households must still store unused batteries out of sight and reach.
Long-Term Capacity Retention
The stated retention of more than 90% after 10 years of sealed storage is designed for emergency backup and infrequently used devices. Actual performance depends on correct storage, with cool, dry conditions generally helping preserve lithium cells.
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Buying Guide – How to Choose the Best CR2450 Lithium Coin Battery
Choosing a CR2450 cell is more involved than confirming the model number. Voltage, physical dimensions, storage needs, safety packaging, temperature exposure, and the number of devices you service should all influence the decision.
Confirm Voltage and Device Requirements
A CR2450 is a nominal 3-volt lithium coin cell, and every product in this guide identifies that output. Device documentation is still the authoritative source: some devices use rechargeable battery packs or proprietary coin cells with similar dimensions, and a physical fit alone does not guarantee electrical compatibility. Check for the CR2450, DL2450, ECR2450, or an explicitly listed equivalent marking. If the device uses another size, such as CR2032, do not substitute it simply because the diameter looks similar.
Check Diameter, Height, and Polarity
Coin cells can look nearly identical while differing in thickness and contact design. The CR designation and 2450 number should be checked together against the battery compartment or user manual. Before installation, identify which side is positive and match it to the marking inside the device. Never force a cell into a compartment, and never stack a coin cell directly against a metal spring unless the device design explicitly uses that arrangement. A slight difference in fit can be a reason to return the product rather than alter the compartment.
Choose the Right Pack Quantity
A single-cell pack is appropriate for an urgent replacement, while two- or five-cell packs make sense for a few household devices. Ten- and twenty-cell options are more practical for offices, maintenance kits, landlords, workshops, and households with several compatible products. Larger packs can lower the need for repeat purchases, but they also create more unused inventory and require secure storage. Count the devices you expect to power before choosing a quantity, and consider whether you want one battery or a spare for each location.
Compare Storage Life Claims
Storage life is especially important for emergency kits, vehicle accessories, seasonal decorations, and rarely used sensors. The products in this guide range from stated five-year shelf lives to guarantees or claims of 10 years, with one Energizer option stating up to 12 years. These are manufacturer claims rather than a promise that every installed battery will last the same number of years. A longer claim can improve confidence when planning a backup supply, but proper storage conditions matter. Keep unused cells sealed, dry, and away from excessive heat or freezing conditions.
Prioritize Child-Resistant Packaging
Small lithium coin cells can cause severe internal burns if swallowed, so safety packaging is a meaningful household consideration. Energizer, Duracell, and the newer five-count Philips listing expressly advertise child-resistant or child-secure packaging. Such packaging helps reduce accidental access but does not make loose batteries harmless. Store all unused CR2450 cells in a secure location inaccessible to children and pets, and do not leave them on tables, counters, or floors. Even products without a stated child-resistant feature should be kept under the same careful household control.
Evaluate Temperature Suitability
Temperature affects available power, long-term storage, and leakage risk. The first Energizer listing states a wide range from -22°F to 140°F, while the newer Philips five-pack claims operation from -4°F to 140°F. Another Philips listing gives a -20°C to +30°C range, which is not identical to the Fahrenheit range in the newer product description. For a car key fob, outdoor sensor, garage opener, or unheated storage area, compare the stated range with local conditions. Batteries installed in vehicles can experience both heat and cold, so a wider stated range deserves consideration.
Assess Leakage Protection and Construction
Leakage can damage a device even when a battery appears new, particularly after long storage or improper installation. Several listings in this guide mention leak-proof or leak-resistant construction, sealed blister packs, and protective coatings. These features can reduce risk, but they do not replace correct handling. Store batteries separately from conductive objects, install them with clean, dry contacts, and follow the device's polarity guide. Remove an old battery promptly when replacing it, and avoid mixing an old cell with a partially depleted one unless the device manufacturer expressly permits it.
Consider Capacity and Device Drain
Capacity matters most in devices that draw more current or are expected to operate for long periods between replacements. The five-pack Philips option claims up to 70% more power than standard alternatives, while PGSONIC emphasizes high energy density and high capacity. The other listings offer fewer numerical capacity details, so their real-world behavior cannot be compared precisely from the supplied information. For a high-drain medical device, keyless entry system, or sensor, choose a reputable brand with strong application guidance. For low-drain remotes and simple household electronics, shelf life and safe storage may be more decisive.
How to Use and Care for Your CR2450 Lithium Coin Battery
Begin by confirming that the replacement is a genuine 3-volt CR2450 or an approved equivalent, then inspect the battery and compartment for dirt, corrosion, or a cracked contact. Note the polarity marked inside the device. Use clean, dry hands or a soft dry cloth, place the cell in the correct direction, and avoid pressing too forcefully on the contacts. If the compartment has a retaining clip or cover, reinstall it only after confirming that the cell is seated properly.
Store unused CR2450 batteries in their original packaging, especially when buying a multipack. Keep them in a cool, dry location away from direct sunlight, heaters, moisture, metal objects, and food. Do not carry loose coin cells in a pocket with keys or coins, because the metal can create a short circuit. Do not mix partially used batteries with new cells in the same device unless its manufacturer explicitly permits that practice, as mismatched cells can affect performance and leakage resistance.
Replace a battery promptly when the device signals a low charge, dims, resets unexpectedly, or operates less reliably. Remove the old cell if the device will remain unused, and inspect the compartment before inserting a new battery. If a cell is swollen, corroded, hot, discolored, or leaking, do not handle it with bare hands or install it in a device. Follow local guidance for household battery disposal, and keep every loose or damaged lithium coin cell away from children and animals.
Frequently Asked Questions
Are CR2450 and DL2450 batteries interchangeable?
The products in this guide list DL2450 as an equivalent designation for CR2450, so the two model names are commonly used for the same general 3-volt lithium coin-cell format. However, buyers should still confirm the dimensions, voltage, and polarity specified by the device manufacturer. Similar naming does not guarantee compatibility with every proprietary battery or battery compartment.
What devices use a CR2450 battery?
Common applications include car key fobs, garage door openers, remote controls, watches, digital scales, thermometers, sensors, glucose monitors, smart locks, and some small household electronics. The exact battery can vary by model, so open the device and locate the battery marking or consult the user guide before purchasing. A similar coin-cell size should not be assumed to be interchangeable.
How long should an unused CR2450 battery last?
Unused storage life depends on the product and the conditions in which it is kept. The products here state shelf lives ranging from five years to 10 years, with one option claiming up to 12 years in storage. Those figures describe retention under appropriate storage, not guaranteed service life after installation, and actual device life varies with usage, temperature, and power demand.
Can I use a rechargeable CR2450 battery?
Only if the device manufacturer explicitly specifies a rechargeable battery. Rechargeable coin cells can have different voltage behavior, charging requirements, and safety characteristics from primary lithium cells. Never recharge a non-rechargeable CR2450, and do not place a standard primary cell in a charger. If the device lists a particular rechargeable model, follow that guidance exactly.
What should I do if a CR2450 battery leaks?
Avoid touching the leaking material directly, and keep the battery away from children and pets. Remove it from the device only if it can be done without direct contact, then follow the device manufacturer's cleanup instructions and local guidance for damaged lithium batteries. If the electrolyte contacts skin or eyes, rinse with plenty of water and seek medical advice; contact emergency services for any suspected ingestion.
Are child-resistant packages completely childproof?
No. Child-resistant packaging is designed to slow access and reduce accidental exposure, but it can be defeated by determined children or improper adult handling. Keep all CR2450 batteries, packaged or loose, out of sight and out of reach. A secure drawer, high cabinet, or lidded container provides an additional layer of protection in homes with young children.
Does battery capacity matter in a remote control?
It can, although a low-drain remote may work for a long time with a quality cell. Capacity becomes more important in devices that draw more current, operate continuously, or need dependable voltage for accurate readings. For critical equipment, choose a reputable cell, observe the recommended replacement schedule, and avoid mixing old and new batteries unless the manufacturer specifically allows it.
How should I dispose of used CR2450 batteries?
Follow local household battery recycling and disposal rules. Take used lithium cells to an appropriate collection or recycling location when one is available, and tape the terminals or keep them in their original packaging if required by local guidance. Do not throw loose coin cells into household trash where they could contact metal or reach children and animals through the waste stream.
Final Thoughts on Choosing the Best CR2450 Lithium Coin Battery
The Energizer 2450 two-pack is the most balanced overall choice because it pairs the highest listed rating with broad device compatibility, child-resistant packaging, and a stated storage life of up to 12 years. The Philips five-pack is a strong household alternative with individual packaging, while the single Duracell cell is convenient for an urgent, trusted-brand replacement.
Prioritize the factors that match your actual use: a one-cell pack for a single device, five or six cells for several household items, and ten or twenty for larger reserves. Check the device's required model and voltage, pay attention to child-resistant packaging, and consider storage and temperature conditions for batteries kept in vehicles, garages, or emergency kits.
Ratings and product details can change over time, and current prices vary by seller and pack size. Confirm the listing, model designation, quantity, safety information, and any manufacturer storage claims before ordering. The links in this guide point to the relevant product pages so you can review the latest information at the time of purchase.