MZD8391 Analogue Battery Tester – Quick Checker For AA, AAA, C, D, 9V & Button Cell Batteries (No Battery Required, 1 Pack)

About This Product

Got a drawer full of half-dead batteries and no clue which ones are still good?
You're not alone.
This little MZD8391 battery tester takes the guesswork out of the equation.
Just pop in your AA, AAA, C, D, 9V, or even those tiny button cells, and the analog needle tells you right away if it's good, low, or needs to be replaced.
No internal battery required – it powers itself from the battery you're testing.

Super simple, compact, and lightweight, so you can keep it handy anywhere.
The color-coded scale makes it easy: green means go, yellow means it's getting weak, and red means it's time to recycle.
Works for 1.

5V and 9V batteries, with clear voltage ranges for each.

Just remember to keep the test quick so you don't drain the battery more than necessary.
It's not a lab-grade capacity meter, but for everyday home use, it's a total lifesaver.

Stop guessing and start knowing which batteries are worth keeping.