2s 500mAh Volantex Lipo Battery Sale! from 661 /per Qty. Add to Cart This battery is suitable for the P51D 750mm wingspan and other planes that use a 2s 500mAh battery. Specifications Voltage - 7.4VCapacity - 500mAhCall Count - 2sDimensions - 57/28/10Connector - JSTWeight - 39g Qty available:9 SKU:PB3105