Description
About this battery
This 650mAh 4S pack is part of the OptiPower FPV Racing Ultra range, with a 50C continuous discharge rating and a 100C burst rating. It is supplied with 14AWG silicone leads, an XT30 main connector and a JST-XH balance connector. Its listed dimensions are 56 × 30 × 27.5mm.
Part number OPR 6504S
Charging and care
Match the cell count, connector and physical fit to your model’s requirements. Use a compatible LiPo balance charger and follow the limits on the pack label. Read the safety guidance before charging, using or storing the battery.




