High quality, programmable charger from Grin Technologies. High efficiency allows it to be fan-less for quiet operation. From Grin : “The Cycle Satiator is a universal charger for most types of ebike batteries. You can program up to 20 custom charge profiles for any lead, nickel, or lithium battery pack with a full charge voltage of 63V or less. With 360 watts of charging power, it is over twice as fast as your normal 4 amp "Fast Charger", and yet it fits in a smaller package. “

The charger will be pre-programmed with charging profiles for the Energon 378 battery.