ZB2L3 Battery Capacity Tester - LCD Display For 18650 / 26650 Li-ion Batteries - Voltage & MAh Meter

Got a bunch of old 18650 or 26650 batteries and not sure if they're still good?

This little ZB2L3 tester is exactly what you need.

It's a simple, no-frills device that lets you test the actual capacity of your lithium-ion batteries.

You hook up the battery, it discharges it, and tells you how many milliamp-hours (mAh) it's actually holding.

It's got a clear LCD screen that shows you the voltage and capacity.

Super handy for anyone into vaping, flashlights, or building battery packs.

It's an unbranded generic, but it does the job perfectly.

Weed out the weak cells and keep the good ones.