This is a lithium polymer battery voltage tester. It's protect the Li-Po battery over discharging. setting the minimum voltage alarm pressing the push button, battery tester will warn the low battery level.
Minimum voltage in a Li-Po battery - 2.8V (set the warning alarm more than 2.8V for better battery life)
Low battery alarm voltage set range - 2.7V ~ 3.8V
Battery Voltage - 0.5V ~ 36V Cell Voltage - 0.5 ~ 4.5V
Length x Width x Height
39mm x 24mm x 9mm
1S-8S Li-Pl/ Li-ion/ Li-Mn/ Li-Fe