The Alarm sounds and red lights to warn you when the battery voltage is too low.
It can prevent your lipo battery damaged due to low voltage.
This Lipo Battery Alarm is only good for 2 Cells 7.4V and 3 Cells 11.1V and 4 Cells 14.8V Lipo Batteries.
Required the balance charger plug in the battery
Each LiPo has a Minimun discharged voltage of 3.0V before damage occurs
Each LiPo cell = 3.7V (nominal) no matter how many cells are in parallell.
Each LiPo cell has a Minimun charged voltage of 4.25V before damage,
and Risk Of Fire occurs
Original box: NO
Weight: about 4g
1 x RC model 2S 3S 4S Detect Lipo Battery Low Voltage Alarm Buzzer Cell Lipo Battery Dual Speaker LED Indicator 7.4V-14.8V