Battery Type: Lipo, Battery Volt:3.7V, Battery capacity: 650mAh 25C.
4PCS 1S 3.7V 650mAh Lipo Battery with USB Charger for RC Syma X5 X5C X5SC X5SW
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4PCS 1S 3.7V 650mAh Lipo Battery Rechargeable Batteries with USB Charger NEW