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This Lipo Battery Alarm is only good for 2 Cells 7.4V and 3 Cells 11.1V 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
Weight: about 4 g /cell
100pcs Low Voltage Buzzer For 2s 3s Lipo Battery Alarm New
Come with a plastic bag