Fit for all kinds of helicopter models RC Drone UFO parts helicopter Syma. Nominal Capacity :3.7V 150mAh 0.555Wh. Cell Size ：6.5 mm (thick) × 17 mm (width) × 23 mm (length). Each Cell weight :5 g. 5.Built-in protection circuitPCB for prevent over charging or over discharging.
eBay