For pro-style batteries that use either 4mm or 5mm sockets

Reedy's Pro Charge Lead features stepped bullet connectors for compatibility with pro-style batteries that use either 4mm or 5mm sockets. A standard 2mm bullet connector is provided for the balance connection. On the other end, 4mm bullet connectors plug directly into the charger while an XH 2S balance connector plugs into the charger's balance port or to a compatible balance board.