The Maxpro Battery Monitor can monitor your battery status in use, usually the voltage of battery will drop when it is using, so the Maxpro Battery Monitor will monitor the voltage and report the result to you with light and buzzer. Even use this monitor so you can find any problems in your heli or airplane, it can help you to find your heli or airplane whether is health or not.

Model	Blue light shines	Blue light flashs	Red light shines	Red light flashs & Beep
2S	7.4v up	7.4v ~ 6.8v	6.8v ~6.6v	below 6.6v
3S	11.1v up	11.1v ~ 10.2v	10.2v ~ 9.9v	below 9.9v
4S	14.8v up	14.8v ~ 13.6v	13.6v ~ 13.2v	below 13.2v
6S	22.2v up	22.2v ~ 20.4v	20.4v ~ 19.8v	below 19.8v

Sold Out but can be ordered

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