are cr 2025 and 2032 the same

2 min read 30-11-2024

CR2025 vs. CR2032: Are They the Same? (And Why It Matters)

Meta Description: Confused about CR2025 and CR2032 batteries? This detailed guide explains the key differences between these common button cell batteries, including size, voltage, and applications. Learn how to choose the right one for your device and avoid costly mistakes!

Title Tag: CR2025 vs CR2032: Key Differences & Which to Choose

The world of tiny batteries can be surprisingly complex. Two of the most common button cell batteries, the CR2025 and the CR2032, look remarkably similar, leading many to believe they're interchangeable. However, while they share a similar form factor, crucial differences exist that can significantly impact your device's functionality – and even its safety. This article will clearly outline these differences so you can confidently choose the right battery for your needs.

Understanding the Numbers: CR2025 and CR2032 Explained

The seemingly simple alphanumeric code on these batteries actually reveals vital information. Let's break it down:

CR: This indicates the battery chemistry – Lithium Dioxide. Both CR2025 and CR2032 use this same chemistry.
20: This denotes the diameter of the battery. Both are 20mm in diameter.
25 & 32: This is the key difference. These numbers represent the battery's height (thickness) in tenths of a millimeter. Therefore, a CR2025 is 2.5mm thick, while a CR2032 is 3.2mm thick. This seemingly small difference is significant.

Key Differences Between CR2025 and CR2032 Batteries

Feature	CR2025	CR2032
Diameter	20 mm	20 mm
Height	2.5 mm	3.2 mm
Voltage	3 Volts	3 Volts
Capacity	Slightly Lower	Slightly Higher
Typical Uses	Smaller Devices	Larger Devices

While both batteries offer a 3-volt output, the CR2032 generally has a slightly higher capacity due to its increased size. This translates to potentially longer lifespan in applications where power draw is consistent.

Why Using the Wrong Battery is a Problem

Using a CR2025 where a CR2032 is required will result in the battery not fitting properly. This could cause the device to malfunction or even damage the battery compartment. Conversely, forcing a CR2032 into a space designed for a CR2025 is risky, potentially causing damage to the device and posing a safety hazard.

How to Identify the Correct Battery for Your Device

Always check your device's manual or the battery compartment for the correct battery type. The model number will be clearly printed. If you're unsure, take a picture of the old battery and compare it to images of CR2025 and CR2032 batteries online before purchasing a replacement.

Common Applications for CR2025 and CR2032 Batteries

CR2025: Key fobs, calculators, watches, some medical devices, and smaller electronic gadgets.
CR2032: Computer motherboards (CMOS battery), car key fobs, some digital cameras, and other electronic devices requiring slightly more power.

Conclusion: Choosing the Right Battery Matters

While CR2025 and CR2032 batteries might appear identical at first glance, their subtle differences in size directly impact their compatibility and performance. Always double-check the specifications before replacing these small but vital power sources to avoid malfunctions, damage, and potential safety issues. Choosing the right battery ensures your devices function correctly and extends their lifespan.