FosCadit Voltage Indicator Battery Tester for AA/AAA/C/D/9-volt Rectangular and Button Cell Batteries (BT-168) (Needle Type), Battery Powered - Product Features
Use this innovative item to test all kinds of common use batteries (AA, AAA, C, D, 9V, Button / Coin cell)
Displays terminal voltage of batteries which can indicate the residual power in the battery accurately
No Internal / External power source required to work
Easy-to-read, Needle indicator.
Perfect for Home Use, Great small tool can tell you if your battery is good, low, or needs to be replaced
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