A CR2354 battery powers car key fobs, remote controls, watches, medical devices, and many small electronics. You will find this compact coin cell in everyday items that need steady, long-lasting energy. Its 3V output and roughly 560 mAh capacity suit devices that draw small amounts of current over months or years.

Device makers choose this cell for its reliable performance and wide operating range. You can keep your gear running with the right replacement. The details below cover key specifications, common devices, and safe selection tips. You will learn how to match the cell to your device and replace it with confidence.

Key Takeaways

• CR2354 batteries power car key fobs, remotes, watches, and small electronics.

• These batteries deliver 3V and about 560 mAh for long-lasting performance.

• Store coin cells safely away from children and tape terminals for storage.

• Match the battery chemistry to your device: CR for pulse loads, BR for memory backup.

• Recycle dead CR2354 batteries at designated points; never throw them in the trash.

Key Specs of the CR2354 Battery

Size, Voltage, and Capacity

The CR2354 battery uses a compact coin cell format. You get a diameter of about 23 mm and a thickness of 5.4 mm. These dimensions let the cell fit into slim compartments inside key fobs, remotes, and other handheld devices.

The nominal voltage sits at 3V. Most small electronics expect this steady output. A capacity of roughly 560 mAh gives you long run times between replacements. Devices that draw tiny currents can run for months or even years on a single cell. You will appreciate this low maintenance demand in items you rarely open.

Chemistry and Operating Range

This cell uses lithium manganese dioxide chemistry, often written as Li/MnO2. The chemistry delivers a stable discharge curve. Your device sees consistent power until the cell nears the end of its life. That behavior matters for car keys and medical tools, where a sudden voltage drop can cause a failure.

The CR2354 battery operates across a wide temperature band. That range covers cold winter mornings in a parked car and warm summer days indoors. The cell holds up well in both settings.

Self-discharge stays low. A stored cell keeps its charge for years. You can stock spares without worry about them going flat on the shelf. This trait makes the CR2354 battery a strong pick for backup power and infrequently used devices.

The construction adds another layer of reliability. A stainless steel case protects the internal materials. A secure sealing system keeps the electrolyte inside and blocks moisture. You get less risk of leakage that could damage your device.

The cell also meets RoHS compliance rules. That means it stays free of restricted hazardous substances. You can dispose of it through normal battery recycling channels with confidence.

These specs work together. The size fits tight spaces. The voltage and capacity match small loads. The chemistry and sealing protect performance over time. You can check your device manual for the exact cell it needs. Then match those numbers to the specs above.

Common Uses of the CR2354 Battery

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Car Keys and Remotes

Car key fobs rank as the most familiar home for this cell. A key fob sends a short radio pulse when you press a button. That pulse needs a burst of current, and the CR2354 battery delivers it without a voltage sag. You unlock doors, open the trunk, or start the engine from a distance. The cell sits inside a slim case that fits in your pocket. Remote controls for garage doors, gate openers, and home entertainment systems use the same power profile. These devices sit idle for long stretches, then demand a quick burst. The low self-discharge rate keeps the cell ready for that moment. You may go a year or more between replacements.

Small Electronics and Backup Power

Many small devices rely on this cell for steady, low-current power. You will find it in digital wrist watches, calculators, toys, wearable electronics, and medical devices. Fitness appliances, game consoles, and scales also use coin cells in this size class. Smart home gear depends on it too. Alarm window and door contacts, panic buttons, and IoT sensors need a compact cell that lasts. Speedometers and Airtags round out the list. Each device draws a tiny current over a long period, and the roughly 560 mAh capacity covers that demand well.

Some equipment calls for this cell by design. Specialized electronic equipment, industrial instruments, monitoring equipment, and measuring instruments often specify the CR2354 battery for its stable output. Specialty sensors and control equipment built around this format expect the exact 23 mm diameter and 5.4 mm height. You should not swap in a CR2032, CR2330, CR2430, or CR2450 unless the manufacturer lists it as compatible. Those cells differ in size and may not seat or connect properly.

Backup power is another major role. Many circuits use a coin cell to hold memory alive when the main power drops. You will see this in CMOS backup batteries on computer motherboards and in memory backup circuits for clocks, settings, and stored data. The cell keeps that small load running for years. A stable chemistry and a secure seal protect the stored data. When you replace the cell, the device keeps its settings and your data stays intact.

Safety and Selection Tips

Safe Handling and Replacement

Coin cells look harmless, yet they demand care. Treat every replacement as a small safety task. Follow these practices:

• Store coin cells out of the reach of young children. Their small size makes them a swallowing hazard.

• Place each battery in a separate plastic bag, or cover the terminals with non-conductive tape such as electrical tape. Loose cells can touch terminal to terminal, spark, and start a fire.

• Keep single-use lithium cells out of your trash and municipal recycling carts. Send them to a designated recycling point instead.

• Contact the manufacturer for handling guidance if a cell becomes damaged.

Work on a clean, dry surface when you swap a cell. Note the polarity marks before you lift the old battery. Seat the new cell with the positive side facing the same direction. Press it down gently until it sits flush. Never force a cell into a compartment that feels too tight.

Choosing the Right Battery

The CR2354 battery and the BR2354 share a size, yet they are not interchangeable. The CR version uses lithium manganese dioxide chemistry. It delivers high-power pulses, which suits key fobs and remotes that need a quick burst on demand. The BR version favors long-life stability at low drain. It fits memory backup circuits that sip current for years. Match the chemistry to the job, and check your device manual for the recommended type.

Some devices designed for a CR2032 can accept a CR2354-to-CR2032 adapter. The adapter lets the larger cell fit the smaller compartment. Confirm the device lists this setup as compatible before you try it.

This CR2354 battery keeps your car key fobs, garage remotes, watches, and small electronics running. Its 3V output and compact coin format suit devices that sit idle for long stretches. You get steady power when you need a quick pulse or a slow, years-long drain.

Check your device manual before you buy a replacement. Confirm the size and chemistry match the original cell. Follow safe handling rules too: keep cells away from children, tape the terminals for storage, and recycle them properly. With the right cell and a careful swap, you can keep your everyday devices working reliably for years.

FAQ

How long does a CR2354 battery last?

Run time depends on the device. A key fob that sends short pulses may last a year or more. Devices that sip tiny currents can run for several years. The low self-discharge rate also keeps stored spares ready for a long time.

Can you recharge a CR2354 battery?

No. This is a single-use lithium cell. Do not place it in a charger. Attempting to recharge it can cause leakage, overheating, or rupture. Replace the cell with a fresh one when the voltage drops and your device stops responding.

Will a CR2032 fit where a CR2354 goes?

Not directly. The CR2032 measures about 20 mm across, so it sits loose in a 23 mm compartment and may lose contact. Use a CR2354-to-CR2032 adapter only if your device manual lists that setup as compatible.

How should you store spare CR2354 batteries?

Keep spares in a cool, dry place away from direct sunlight. Leave each cell in its original packaging or a separate plastic bag. Tape the terminals if the cells sit loose. Store them out of the reach of children.

What should you do with a dead CR2354 battery?

Send it to a designated battery recycling point. Do not toss it in your household trash or municipal recycling cart. Tape the terminals before you drop it off. This step lowers the risk of a spark during transport.