Designed for 36V batteries, this reliable charger features a 5.5mm outer / 2.1mm inner plug, 2 Amp output, and a 42V rating. It's also compatible with Reid Scooters and e-bikes with a single-pin port. ·        Compatible with Zone, Navigate, and Flow Compass e-bikes·        Suitable for 36V Reid Scooters and e-bikes with a single pin port battery·        5.5mm outer / 2.1mm inner plug·        Output: 2 Amp·        42v (suitable for 36v batteries only)SAFETY NOTICE: Using an unofficial battery charger could damage to your battery and will void your warranty. Only use the genuine battery charger.