3.7V 1-cell Lipo Battery. Battery life is not warranted and will vary depending on usage. This is considered normal - therefore, a change in battery capacity is not covered under warranty. Important Note.
4 x Li-Po 360821 Battery Lithium Polymer 3.7V 50mAh 21 x 8 x 3.6mm LP GPS MP3 UK
2pcs 3.7V 1800mAh ST Plug LiPo Rechargeable Battery Lithium Polymer for RC Drone
3.7V 1800mAh ST Plug LiPo Rechargeable Battery Lithium Polymer for RC Drone UK
3.7V 600mAh 403048 Battery Lithium Polymer Li-Po for Small Electronic Devices
4X 3.7V Battery Lithium Polymer 6000mAh Battery 1S Rechargeable Protective Board
