The EFest Li-Ion battery voltage tester is a simple to use battery tester for popular Li-Ion batteries. USB powered and featuring an integrated LCD screen that displays the batterie voltage.
Unit can test 1 battery at a time and is compatible with most popular Li-Ion cylindrical batteries. Including; 10440, 14500, 14650, 16340, 16650, 17650, 17670, 18350, 18490, 18500, 18650 and 26650.
(Test unit only- Battery not included)