The Lithium Battery Capacity Tester ZB2L3 is a lithium battery capacity measuring instrument, designed for 3.7 V – 4.2 V batteries (Li-ion 18650 and similar).

It operates with an external discharge resistor, measuring current, voltage, and discharge time to accurately calculate the battery capacity (mAh).

It features a digital LED display, voltage limit adjustment buttons, and an automatic cutoff function when the voltage falls below the safety limit.

Ideal for testing, evaluating, or comparing 18650, Li-Po, and Li-ion batteries, as well as for DIY projects or electronics labs, it offers reliable results with simple use and high accuracy.