This 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.

Specs

• Compatible with 1-8S Lipo/Li-ion/LiMn/Li-Fe batteries
• Voltage detection precision: +/-0.01V
• Low voltage alarm mode for 2S~8S; Adjustable alarm set value range:~2.7~3.8V
• Total voltage display range: 0.5V~36V