Documents & Guides
Find all the information you need about car key fob batteries. Browse our comprehensive guides, tutorials, and resources.
Battery Guides
Battery Size Guide
Complete guide to car key fob battery sizes. Compare CR1616, CR1620, CR1632, CR2016, CR2025, CR2032, CR2354, and CR2450 batteries with dimensions, voltage, and capacity information.
View Guide →CR2032 vs CR2025
Compare CR2032 and CR2025 batteries to understand the differences, similarities, and which one is right for your vehicle.
View Comparison →Safety
Battery Safety
Critical safety information about button cell batteries. Learn about dangers, proper handling, emergency procedures, and important hotline numbers from the U.S. Consumer Product Safety Commission.
View Safety Guide →Installation & Troubleshooting
How to Replace Car Key Battery
Step-by-step instructions for replacing your car key fob battery. Learn the proper technique and important safety tips.
View Instructions →Common Car Key Battery Problems
Learn about common issues with car key fob batteries and how to troubleshoot them effectively.
View Guide →