AOK-BL8S Battery Checker and Low Voltage Buzzer Alarm 79P-8003-VoltageMonitor
Easy to use - works with any 1-8S Lipo/Li-Ion/LiMn/Li-Fe. Just plug into the balance plug and the LED will cycle through the individual cell voltages as well as list the total voltage. You can set the alarm from 2.7 to 3.8V per cell or you can turn the alarm off.
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