![Battery tester for coin cell batteries Battery tester for coin cell batteries](https://www.woodtoolsanddeco.com/251-medium_default/battery-tester-for-coin-cell-batteries.jpg)
Reference: WD1638035434
Brand: Wood and Tools
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Battery tester for all kinds of coin cell (button cell) batteries.
- A great gadget for instant testing of battery capacity.
- Ability to test three kind of battery sizes: 7 mm, 10 mm and 20 mm.
- Place coin cell battery into the correct hole and check the positive and negative terminals.
- When the indicator is in the green zone, the battery is (almost) full
- When the indicator is in the yellow zone the battery power is still good.
- When the indicator is in the red zone the battery is low on power and must be replaced.