Review on Multi-Purpose LCD Display Universal Battery Tester For AA AAA C D 9V CR2032 CR123A CR2 CRV3 2CR5 CRP2 1.5V/3V Button Cell Batteries by Dezz Watson
Tells me what I need to know
This works just fine and is sturdy enough that I feel it will last a long lifetime. My only complaint is that a battery that is too weak to run some heavier-drain devices still registers in the "good" range. That is, a battery that is clearly on its way out still registers at 90% on its readout. But once you know that, you can pretty well judge the battery's draining state, even if device says "good".
- ★ QUICK RESULTS: Simply place a battery into the decent battery detector, it will shows you quickly the status of your batteries’ health by the using bars, helps you avoid battery damage from unnecessary recharges. DON'T POWERED BY RECHARGEABLE BATTERY NOR TEST RECHARGEABLE BATTERIES
- The tester may give false positives or false negatives for certain battery types
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