The BX100 can monitor each cell in your battery and sound an alarm when the battery gets too low. Having a battery Voltage/Cell monitor is essential for the care of your battery. If you let your battery fall too low in voltage the battery will become permanently damaged and unusable and – you can also check the condition of each cell. Just plug the Low Voltage Monitor into the balance port on your battery and a small LCD display will show the total pack voltage as well as each individual cell voltage. Don’t let a faulty battery be the cause of a catastrophic accident on your next drone fishing mission.