Efest LUC T1 Battery Tester for 3.7V 26650-14500 Li-ion Rechargeable Battery
(Battery not Included)

Specification
AC input power : AC 100-240V 50/60Hz
DC input power : DC 5V +/- 5% 1A
Measuring Range : 0.00V-4.5V
Measuring Accuracy : +/- 5mV
Display Accurancy : +/- 10mV
Standby Current : < 30mA
Operation Temperature : 0 deg C - 40 deg C
Storage Temperature : -40 deg C - 70 deg C

Operation Instructions Connect MIC-USB to DC 5V 1A interface of LUC T1 to power source, after that, LUC T1 begins to self-detect, then standby for testing. Correctly insert the battery and it start to test in 1 second, the actual voltage will show in the display screen.