BTG 4PCS 3.7V 750mAh Battery + X4 JST Charger for Holy Stone HS110 HS200 HS120 HS130 X300C X400C MJX X400W Sky Viper S670 V950hd s1750 V2450 Syma X56W;

Package inclduing: 4x batteries; 1x 4in1 JST charger


CAUTION:
1) On receving, please double check whether battery swelled up.If swelled up, do stop using or charging, and contact us in time.
2) Do not overcharge the battery.
3) For safety reasons, make sure batteries located in a clean place which is easy for heat dissipation.
4) Do not charge batteries that are still hot or it might lead to fire or explosion. A fireproof safety bag is recommended for lipo battery storage/charge.
5) Do keep batteries away from humid/hot area; and inflammable materials, such as floor with carpet covered.