Battery Tester

An essential tool for any locksmith especially those who work with battery powered keys such as car keys. This compact battery tester works with all common batteries up to 9 Volts including Coin Catteries, AA, AAA, D and 9 Volt batteries. 

IMPORTANT: For button-style batteries, the lower line must be used.

Noote: this is a very cheap tester and is not highly accurate but what do you expect for $6 🙃