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Got a drawer full of batteries but not sure which ones are still good?
This little BT-168D battery tester takes the guesswork out of it.
Just pop in any AA, AAA, C, D, 9V, or even miniature button cells, and the LCD screen tells you right away if it's good, low, or needs replacing.

It covers a ton of battery types—1.



Compact, lightweight, and dead simple to use.




4.5 out of 5