This Battery Tester Takes The Guess Work Out Of How Much Power Is Left In Your Batteries. Tests Power Levels On 9-volt Batteries, As Well As Aaa, Aa, C, And D Cell Batteries. It Even Works On 1.5 Volt Miniature Cell Batteries. Measures Only 4 1/4" X 2 1/2", So You Can Keep It Keep It On Hand With You Anywhere.

* Measures 4.25" X 2.5"

* Works On 9V, AA,AAA,C & D

* Battery Tested Provides Power

* Even Works On 1.5 V Mini Cells

* Eliminates Guess Work