Bosch PowerPack 725 Battery - the smart system Compatible Frame Mount 725Wh. Bosch PowerPack frame batteries are close to the bikes 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.