This is a great two in one tool that gives a loud alarm at low voltage and can quickly display battery voltage. Simply plug a 1-8s battery's balance connector into the voltage meter/buzzer. You will receive an instant readout of the total voltage and an individual reading of each cell.
Compatible with 1-8S Lipo/Li-ion/LiMn/Li-Fe batteries
Voltage detection precision: +/-0.01V