BT20 battery tester for AAA, AA, C, D, 9V and button cell batteries. While testing 1.5V and 9V batteries you get the reading from the top scale. While testing button cell batteries, get the reading from the lower scale. If the needle does not move, check and make sure the battery is touching both contacts before assuming it is completely dead. This battery tester is very easy to use and does not require batteries to operate.
Features of our Battery Tester include:
(1) Able to test AAA, AA, C, D, 9V and button cell batteries
(2) Easy-to-read, color-coded reading meter:
- Red range = Replace
- Yellow range = Low Power
- Green range = Good
(3) Dimensions (inches): 4-⅜" x 2-⅜"
(4) Plastic body in black
(5) Sliding red contact for manual adjustments
(6) Batteries not required
Please note: This battery tester uses battery charge to test the battery. Keep test times as short as possible to avoid draining the battery.
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