Button cell batteries are an essential power source for many compact electronic devices. Among them, the CR2025 lithium coin battery is one of the most widely used models. You will find it in car key fobs, calculators, glucose meters, computer motherboards, and various portable devices. But what happens if you don’t have a CR2025 on hand? Can it be replaced with another type? This article provides a detailed overview of the CR2025 specifications, equivalents, and replacement options so you can choose the right battery for your device.

What Is a CR2025 Battery?

The CR2025 is a 3V lithium manganese dioxide (Li-MnO2) coin cell. Its name follows a standardized code:
CR → Lithium manganese dioxide chemistry
20 → Diameter of 20 mm
25 → Thickness of 2.5 mm
Key Specifications:
Voltage: 3 Volts
Diameter: 20 mm
Thickness: 2.5 mm
Capacity: ~150–170 mAh (depending on brand)
Chemistry: Lithium (Li-MnO2)
Standard Codes: CR2025, DL2025, ECR2025, KCR2025, BR2025
Thanks to its stable voltage and compact size, the CR2025 is a reliable choice for devices that require low but steady power over long periods.

Equivalent and Alternative Names

Different brands may use different codes for the same battery. If you see these labels, they are fully interchangeable with CR2025:
DL2025 → Duracell’s designation
ECR2025 → Energizer’s version
KCR2025 / KECR2025 → Kodak and other manufacturers
BR2025 → Panasonic/Murata alternative with slightly different chemistry (better for high-temperature use, slightly lower capacity)
L2025 → Used by some European or generic brands
When buying, you can safely use any of these equivalents in place of a CR2025.

CR2025 vs. Similar Coin Cells

Two of the most common substitutes people consider are CR2032 and CR2016. While they share the same 20 mm diameter, their thickness and capacity differ.

Model Size (Diameter × Thickness) Voltage Capacity Range Notes
CR2025 20 × 2.5 mm 3V 150–170 mAh Standard type
CR2032 20 × 3.2 mm 3V 200–240 mAh Thicker, higher capacity, fits only if device allows
CR2016 20 × 1.6 mm 3V 90–100 mAh Thinner, sometimes used in pairs to replace one CR2025
Replacement Tips:
CR2032 instead of CR2025: Works if the battery compartment has enough space for the extra thickness. Provides longer runtime.
CR2016 instead of CR2025: One cell is too thin, but in some devices, two CR2016s stacked can substitute a CR2025.
BR2025 alternative: Suitable for industrial or high-temperature applications where stability is more important than maximum capacity.

Where Are CR2025 Batteries Used?

CR2025 cells are designed for devices that need long-lasting, low-drain power. Common applications include:
Car key fobs – One of the most frequent uses.
Calculators and electronic dictionaries – Ensures years of continuous operation.
Medical devices – Blood glucose meters, thermometers, heart rate monitors.
Computer motherboards – As a CMOS/BIOS backup battery.
Smart gadgets – Bluetooth trackers, RFID tags, fitness devices.
Toys and remotes – Small remotes, LED gadgets, digital scales.
Because of its reliability and availability, the CR2025 remains a go-to choice for both consumer and industrial electronics.

Tips for Choosing and Using CR2025 Equivalents

Stick to the original type when possible: Always use CR2025 or its branded equivalents (DL2025, ECR2025) for best compatibility.
Check space before switching: If you plan to use CR2032, ensure the battery slot can accommodate the extra thickness.
Buy from trusted brands: Cheap unbranded batteries often exaggerate capacity and may not last long. Stick to Panasonic, Energizer, Duracell, or Murata.
Replace both cells together: If your device uses two batteries, replace them at the same time to avoid imbalance.

Dispose responsibly: Lithium batteries should not be thrown into regular trash. Use proper recycling facilities.

Conclusion

The CR2025 battery is a compact, reliable, and widely available 3V lithium coin cell used in a variety of everyday devices. Its direct equivalents include DL2025, ECR2025, KCR2025, and BR2025, which are fully interchangeable. If necessary, it may also be replaced with a CR2032 (thicker, higher capacity) or two CR2016s (thinner, lower capacity), depending on your device’s battery compartment.

When replacing a CR2025, the safest approach is to choose a direct equivalent from a reputable brand. This ensures not only longer performance but also the safety and reliability of your electronic devices.