This battery comes with a larger connector than the standard 1-cell ultra micro Li-Po batteries. This adapter lead is used to adapt the larger high-current connector to the standard ultra micro connector which then allows the mCP X battery to be charged with chargers designed for the more common ultra micro batteries.
E-flite 1S High-Current Ultra Micro Battery Adapter Lead EFLA7002UM is compatible with BLH3500, BLH3580, BLH3600, BLH3680
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