CR2032 Lithium Coin Cell Batteries
3V lithium coin cell power for car key fobs, AirTag-style trackers, smart locks, watches, scales, glucose monitors, and motherboard CMOS. Compare trusted brands and pack sizes in one focused store.
CR2032 Cross-Reference: 2032, BR2032, DL2032, ECR2032
Searching by a different code? CR2032 batteries are commonly listed under these names. Note that BR2032 is a compatible form factor with a different chemistry — always confirm the exact code printed in your device manual before ordering.
CR2032 vs CR2025 vs CR2016
These three coin cells share the same 20 mm diameter but are different thicknesses. The wrong size will cause poor contact, intermittent power, or device damage. Match the exact code printed on your old battery.
CR2032
This site- Diameter
- 20 mm
- Thickness
- 3.2 mm
- Voltage
- 3 V
- Capacity
- ~225 mAh
Standard for key fobs, AirTags, smart locks, CMOS.
CR2025
- Diameter
- 20 mm
- Thickness
- 2.5 mm
- Voltage
- 3 V
- Capacity
- ~165 mAh
Thinner — will not seat correctly in CR2032 devices.
CR2016
- Diameter
- 20 mm
- Thickness
- 1.6 mm
- Voltage
- 3 V
- Capacity
- ~90 mAh
Half the thickness of CR2032 — not interchangeable.
Featured CR2032 Lithium Coin Batteries
Each option is available in multiple pack sizes — pick what fits your device count and storage needs.
Panasonic CR2032 3.0V Lithium Coin Cell Batteries
Long-shelf-life 3V lithium with child-resistant standards-based packaging. Built for key fobs, watches, smart locks, glucose meters, motherboard CMOS, and small electronics.
Philips CR2032 3V Lithium Button Cell Batteries
Leak-proof 3V coin cells with up to 10-year shelf life and ASTM/CPSC child-resistant packaging. Wide temperature range (-4°F to 140°F) for garage remotes and outdoor key fobs.
POWEROWL High Capacity CR2032 Battery
High-density CR2032 cell with reinforced air- and liquid-tight seal and dual-crimp construction. Strong fit for trackers, watches, calculators, and medical accessories.
CR2032 Batteries — Bulk Lithium Coin Cell
Bulk pack of fresh 3V lithium CR2032 cells with 240 mAh capacity and 5-year shelf life. Practical for property managers, classrooms, offices, and homes with many smart devices.
Powermax ACDelco CR2032 Batteries
Mercury- and cadmium-free 3V lithium coin cells with 5-year shelf life and child-protective packaging. Replaces DL2032 in most devices.
Duracell 2032 Lithium Battery — Child Safety Pack
3V lithium with bitter-tasting non-toxic coating and near-impossible-to-open child-resistant packaging. 10-year guaranteed shelf life from a name households already trust.
Nightkonic CR2032 3V Lithium Coin Battery
Value pack of 3V lithium coin cells with 5-year shelf life and 230 mAh capacity. Right size for households with many remotes, trackers, scales, and LED accessories.
Energizer CR2032 Batteries 3V Lithium Coin Cell
Specialty 3V lithium with up to 10-year storage life. Operates from -22°F to 140°F — reliable in cars and garages through winter and summer.
Amazon Basics CR2032 3V Lithium Coin Cell Batteries
Engraved model markings, child-proof packaging, and AirTag compatibility. Practical pick for backup drawers and single-device replacement.
I use CR2032 cells for a mix of devices — key fobs, small remotes, bike sensors, and a couple of bathroom scales. Every battery I have used registered at full voltage out of the package and brought dormant devices back to life without issues. The child-resistant card is not impossible to open, but it requires deliberate scissor cuts, which adds a layer of safety for homes with children or pets. Long battery life, super easy to install. Helps my AirTags, and I’m sure would make a lightbulb bright if needed.
I’ve been using CR2032 3V lithium coin cell batteries exclusively in my key fobs and they’ve been consistently reliable. With three cars (and two key fobs for each), a 10-pack actually makes sense for me. The batteries are well packaged and clearly marked with expiration dates, which gives me confidence they’re fresh. Installation is quick and easy. In my experience, each battery lasts about two to three years.
We have lots of AirTags because we have lots of stuff to lose. They are fantastic for keeping track of things, but the batteries do discharge. A quick pop off of the back, replace the battery, and we are on our way. These worked straight out of the package and that’s about as much as I could have hoped for. Good price as well.
I use these for tea lights in a setting at work that needs a long-lasting battery. These are remarkable in that they last longer than any other battery I’ve used, including famous big-name brands. They are exactly the correct size and construction based on the calipers I keep at my desk. Because the size is as expected, they slide right into place with no muss or fuss. 5/5 stars, charged and ready!
These batteries are excellent for key fobs, rifle scopes, or other optics you have. I haven’t had one leak yet and this is my second pack I have purchased. They fit perfectly as intended, so no issues there. Make battery replacement a breeze and save a few bucks while doing so. Highly recommend.
Bought these to replace batteries in the majority of my house alarm sensors (SimpliSafe). Life expectancy is comparable to other batteries. Great price for a bulk battery purchase. Will buy again when my stock is depleted.
What Is a CR2032 Battery?
A CR2032 battery is a 3V lithium coin cell. The name describes its size: “20” refers to a diameter of about 20 mm, and “32” refers to a thickness of about 3.2 mm. That thin, round design makes it ideal for compact electronics where larger batteries would not fit.
CR2032 cells are built for devices that may sit idle for long stretches and still need to work instantly — a key fob used for a few seconds at a time, a bathroom scale used once a day, a garage remote that lives in the car for weeks. Long shelf life, stable voltage, and dependable performance in a compact form are exactly why CR2032 has become the most common coin format in modern electronics.
You may see the same format listed as 2032, BR2032, DL2032, ECR2032, or 5004LC. These usually describe a compatible 20×3.2 mm 3V coin cell. The safest approach is always to match the exact battery name printed on the old cell or in your device manual.
Common Uses for CR2032 Batteries
CR2032 batteries power everyday devices people use constantly but rarely think about — until the battery dies. A spare pack solves a lot of small problems immediately.
Car Key Fobs & Keyless Entry
When the unlock range shortens, a button responds slowly, or the dashboard shows a low key battery warning, a fresh CR2032 usually fixes it. Cold-weather drivers benefit from replacing early.
Smart Locks & Home Security Sensors
Smart locks, door and window sensors, alarm accessories, and small wireless cameras run on CR2032 cells. A dependable replacement keeps the access system responsive.
AirTag-Style Trackers & Luggage Tags
Apple AirTag and most coin-cell trackers use CR2032. Keep a few spares for travel, bags, bikes, pet collars, and items that go quiet right when you need them.
Watches, Calculators & Bathroom Scales
Digital watches, kitchen and bathroom scales, calculators, and small timers depend on stable 3V coin power. CR2032 is the most common format across these devices.
Glucose Meters & Heart-Rate Monitors
Many glucose meters, blood-pressure cuffs, heart-rate monitors, thermometers, and bike computers rely on CR2032. Clean voltage matters for accurate readings.
Motherboard CMOS & Garage Remotes
Computer motherboards use CR2032 to retain BIOS settings. Garage door remotes and door chimes also depend on it for instant, reliable operation after long standby.
Who CR2032 Batteries Are For
The same battery type fits a lot of different routines. A pack in the drawer, glove box, or supply cabinet quietly keeps small electronics working.
For Drivers
Key fobs, keyless entry remotes, garage door openers — keep one or two spares in the glove box and a backup pack at home.
For Families
Toys, scales, thermometers, remotes, LED candles, and small household electronics. Child-resistant packaging is a meaningful safety feature.
For Smart-home users
Smart locks, sensors, AirTag-style trackers, connected accessories. A bulk pack covers many devices that may need replacement around the same time.
For Seniors & caregivers
Watches, glucose meters, blood-pressure cuffs, thermometers, and simple everyday electronics. Stable voltage means accurate readings.
For Office managers & maintenance
Calculators, remotes, access devices, small tools. Bulk packs keep replacements ready and reduce repeat purchasing.
For Travelers
Luggage trackers, compact lights, watches, backup accessories. Long shelf life means a battery in the travel kit is still ready months later.
Safety, Storage & Installation Notes
CR2032 cells are small enough to be dangerous if swallowed. Safe handling and correct installation matter — especially in homes with children or pets.
- Keep CR2032 cells sealed in child-resistant packaging and out of reach of children and pets — coin cells can be dangerous if swallowed.
- Match the exact code printed on the old battery. CR2025 and CR2016 are thinner and will not seat or perform correctly in a CR2032 device.
- Install with the “+” side facing up unless device markings indicate otherwise. The flat side of a CR2032 is the positive terminal.
- Store in original packaging in a cool, dry place — away from heat, moisture, direct sunlight, and loose metal objects like keys or coins.
- Do not recharge, crush, burn, or mix CR2032 cells with other battery types or chemistries.
- Replace promptly when a device shows low-battery signs — short fob range, dim watch display, scale resets, smart-lock alerts, or tracker warnings.
Frequently Asked Questions
CR2032 batteries are used in small electronics that need compact 3V lithium power. Common uses include car key fobs, smart locks, watches, calculators, digital scales, garage door remotes, AirTag-style trackers, thermometers, glucose meters, heart rate monitors, LED candles, toys, and computer motherboard CMOS batteries.
CR2032 describes the battery type, chemistry, and size. “CR” usually refers to a lithium manganese dioxide coin cell. “20” means the battery is about 20 mm wide, and “32” means it is about 3.2 mm thick. This size is important because similar coin cells may look close but may not fit or perform correctly.
All CR2032 batteries share the same basic 3V coin cell format, but they can differ in shelf life, packaging, brand quality, leak resistance, capacity, and performance consistency. For important devices like key fobs, smart locks, trackers, and health-related electronics, it is better to choose reliable lithium CR2032 batteries from a trusted source.
Yes. CR2032 batteries are one of the most common battery types for car key fobs and keyless entry remotes. If the key fob range becomes shorter, the buttons respond slowly, or the car shows a low key battery warning, replacing the CR2032 battery is often the right fix.
Usually, no. CR2032, CR2025, and CR2016 batteries may have the same 20 mm diameter, but they have different thicknesses. A CR2032 is thicker than a CR2025 or CR2016. Using the wrong size can cause poor contact, unreliable power, or damage to the device compartment. The safest choice is to match the exact battery code listed in the device manual or printed on the old battery.
Battery life depends on the device, usage, storage conditions, and battery quality. In low-drain devices, a CR2032 battery can last months or even years. In frequently used devices such as key fobs, smart locks, trackers, or remotes, replacement may be needed sooner. Unused CR2032 batteries can often store for several years when kept sealed and stored properly.
Yes. CR2032 lithium batteries are known for long shelf life, but the exact storage period depends on the brand and product. Many CR2032 batteries are rated for 5 to 10 years of shelf life when unused and properly stored. They should be kept in original packaging, away from heat, moisture, direct sunlight, and loose metal objects.
CR2032 batteries are safe when stored and handled correctly, but they must be kept away from children and pets. Coin cell batteries can be dangerous if swallowed. Batteries should remain in child-resistant or sealed packaging until use, and used batteries should be stored safely before recycling or disposal.
CR2032 batteries are small enough to be accidentally swallowed, especially by young children. Child-resistant packaging helps reduce easy access to loose coin cells. For households with children, pets, or shared storage areas, safety-focused packaging is an important buying factor.
CR2032 batteries should be stored in their original packaging in a cool, dry place. They should not be stored loose with keys, coins, tools, or other metal items because contact with metal can cause short-circuiting. Batteries should also be kept away from heat, humidity, and children.
A CR2032 battery should be replaced when the device becomes weak, slow, dim, inconsistent, or unresponsive. Common signs include reduced key fob range, fading watch display, inaccurate scale readings, smart lock alerts, tracker battery warnings, delayed remote response, or a device that resets unexpectedly.
The battery should be installed with the correct polarity. Most devices show a “+” and “-” marking inside the battery compartment. The positive side of the CR2032 battery is usually the flat side marked with a plus sign. If the device does not work after replacement, check the direction, battery fit, and contact points.
A small pack is useful for one or two simple replacements, such as a watch, tracker, or key fob. A mid-size pack is better for most homes with multiple remotes, scales, toys, LED lights, and smart devices. Bulk packs are practical for offices, property managers, maintenance teams, schools, workshops, and households with many CR2032-powered devices.
CR2032 Batteries focuses on one essential battery format instead of treating it as a minor item inside a larger battery catalog. The brand is built around practical CR2032 use cases: key fobs, smart locks, trackers, remotes, watches, scales, sensors, and small electronics. The focus is on compatibility, clear pack choices, long shelf life, safe handling, and dependable everyday replacement power.
CR2032 Batteries are made for drivers, families, smart home users, office managers, travelers, caregivers, technicians, and anyone who depends on small electronics. They are useful for people who want a simple replacement battery for one device and for buyers who want to keep a reliable supply ready for many devices at home, in the car, or at work.