Bosch PowerPack 545 Ebike Battery - The smart system Compatible, Frame Mount, 36V, 545Wh, 11.0AhBosch PowerPack frame batteries are close to the bike's center of gravity which has a positive effect on riding behavior. Charging is very simple: for charging with a Bosch charger, the PowerPacks can be easily removed with just one hand movement or conveniently charged on the bike itself. The high quality, long lasting eBike batteries from Bosch combine high energy density with a compact size and light weight. With 4A charger, 100% charge: approx. 4.