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