Included Components:
4 x 7.4V Battery
1 x 7.4V USB Charging Cable
1 x Buzzer Voltage Tester Battery
1 x User Manual Card
Notice:
1.Choose the EXACTLY same voltage battery which your equipment needed.
2.Make sure to connect the correct +/- pole .
3.Disconnect the battery and the equitment if not use for a long time.
4.Keep out from fire and water and children.
5.Please feel free to contact us if you have any query.