Battery Tester

Don't throw your batteries away without testing them first! With this s low-cost and compact  battery tester, you may quickly test all sizes of common household batteries. The tester works with AA, AAA, C, D and 9Volt batteries and button cells, irrespective of whether they are rechargeable or pre-charged. The needle gauge will accurately indicate whether the battery is "good", "weak", or needs to be replaced.

BT-800: A small and handy/pocket battery checker.

BT-840: Convenient Key Chain design.