CR2025 Battery Guide: Size, Equivalent, Uses & Best Brands 2025

Published: Sep 03, 2025 Author: OEMStock team

If you've ever opened up a car key fob, a small calculator, or even a kitchen scale, chances are you've seen a little round silver coin battery inside. One of the most common ones is the CR2025 battery. It's a 3V lithium coin cell that shows up in tons of everyday devices. People often search for things like "CR2025 equivalent" or "CR2025 vs CR2032" when trying to figure out which battery they need, and honestly, it can be confusing if you're not familiar with these codes.

This guide will walk you through everything you need to know about the CR2025-its specs, how long it lasts, common replacements, and even which brands are worth buying.

What Exactly Is a CR2025 Battery?

The name itself tells you a lot. "CR" means it's a lithium manganese dioxide battery. The "20" refers to the diameter in millimeters (20mm), and the "25" means the thickness is 2.5mm. So the CR2025 is basically a 20mm × 2.5mm lithium coin cell battery that puts out 3 volts.

Voltage: 3V
Capacity: usually 150–170 mAh depending on the brand
Size: 20mm diameter, 2.5mm thickness
Chemistry: lithium manganese dioxide

Because of its slim size, it's used in compact electronics where a bigger coin cell, like a CR2032, won't fit.

CR2025 vs Other Coin Cell Batteries

CR2025 vs CR2032

This is probably the most common comparison. Both are 20mm in diameter and both deliver 3V, but the CR2032 battery is 3.2mm thick, while the CR2025 is only 2.5mm thick. That extra 0.7mm gives the CR2032 more capacity (about 220 mAh vs 160 mAh).
So, can you swap them? Sometimes yes, sometimes no. If the battery compartment has enough space, a CR2032 might fit in place of a CR2025. But if the device is designed specifically for the thinner CR2025, forcing in a 2032 could damage the battery contacts.

CR2025 vs CR2016

Another similar option is the CR2016, which is even thinner at 1.6mm. Some devices allow stacking two CR2016s to replace a single CR2025, but it's not always ideal since the voltage might not match perfectly.

CR2025 vs DL2025

Sometimes you'll see batteries labeled DL2025 (especially from Duracell). Don't worry-DL2025 and CR2025 are the same thing. "DL" is just Duracell's code, while "CR" is the international standard.

Where Is a CR2025 Battery Used?

You'd be surprised how many gadgets depend on this tiny cell. Common applications include:

Car key fobs – one of the biggest uses (try searching CR2025 battery for key fob and you'll see why).
Wristwatches – slim design makes it perfect.
Calculators – especially scientific calculators.
Digital thermometers – both home and medical use.
Fitness trackers – older models and some simple ones.
Toys & LED lights – anything compact and portable.

Basically, if a small device needs long-lasting, low-power energy, the CR2025 is a good bet.

How Long Does a CR2025 Battery Last?

Battery life depends on the device and how often it's used. In something like a key fob, a CR2025 can last 2–3 years. In a watch or a low-drain device, it might last up to 5 years.
Tips to extend lifespan:

Store extras in a cool, dry place.
Avoid touching the flat surfaces with your fingers (oil can shorten life).
Remove batteries from devices if you won't use them for months.

Best CR2025 Battery Brands

Not all coin cells are equal. Some cheap ones drain quickly or leak. If you want reliability, stick to the major players:

Panasonic CR2025 – consistent quality, widely available.
Energizer CR2025 – one of the most trusted for car key fobs.
Duracell DL2025 – strong performance, good shelf life.
Sony / Maxell CR2025 – solid Japanese brands.
Renata CR2025 – popular for watches and medical devices.

Yes, you can find packs of no-name CR2025s online for cheap, but for critical devices like car keys, it's safer to go with a branded one.

Conclusion

The CR2025 battery might be small, but it plays a huge role in keeping our gadgets running. Knowing the difference between CR2025 and CR2032, which equivalents to use, and which brands are worth buying saves you time and frustration.
If you're looking for a safe bet, grab a Panasonic or Energizer CR2025 battery. They'll give you solid performance whether it's for your key fob, watch, or any other small device.

So next time you see that little silver disc inside your gadget, you'll know exactly what it is-and how to replace it.

CR2025 Battery FAQs

Q1: Is CR2025 rechargeable?

No. The CR2025 is a non-rechargeable lithium coin cell. If you need rechargeables, look for LIR2025 instead, but note the voltage is slightly different (3.6V).

Q2: Can I use CR2032 instead of CR2025?

Sometimes, yes-if the battery compartment has extra space. But don't force it. Always check your device manual.

Q3: What is the CR2025 equivalent?

The most direct equivalents are DL2025 (Duracell) or ECR2025 (Energizer). In some cases, CR2032 or CR2016 might work, but they're not perfect matches.

Q4: How do I know when to replace my CR2025?

If your car key fob starts losing range, your watch stops, or your calculator dims, it's usually a sign the CR2025 is running low.

Q5: Where can I buy CR2025 batteries?

They're everywhere-Amazon, Walmart, Home Depot, electronic stores, or local watch shops. Just make sure to check expiration dates and buy from a reliable seller.