2PCS 7.4V -11.1V 2S-3S RC Lipo Battery low voltage Alarm Indicator

NOTICE:
1. This battery can only be charged with specify charger, i.e. charger with balance charging.
2. Never over discharge the battery to 2.5v per cell
3. Never over CHARGE the battery to 4.25v per cell
4. Never charge the lipo battery over 1.5A current if you don't have a professional lipo balance charger!
5. Do not use the battery if you find the battery is inflated.
6. Keep out of reach of children

Description:

Weight: 5g
Size: 32*18*9MM(L*W*H)
RC Lipo battery low voltage buzzer alarm
this micro device can measure lipo from 7.4v to 11.1v (2s to 3s), it will sound up to 95dB if your lipo cell voltage drop to 3.3v
It is also a good device for quick test for your lipo before flight, and it can use as inflight alarm if you not sure the maximum flight time.
MUST HAVE ITEM TO SAVE YOUR LIPO!!!!
PLEASE READ THE BELOW INSTRUCTION BEFORE USING THIS BATTE