PowerPacks are Bosch’s external batteries, mounted on the frame (top tube or down tube) or on the rear rack. On the older Bosch eBike System 2 they came in 300, 400 and 500 Wh. On the current Smart System, the PowerPack Rack comes in 400 and 500 Wh and the PowerPack Frame in 400, 545, 725 and 800 Wh. For example, the Tern GSD S10 runs a 545 Wh PowerPack and the Tern GSD R14 an 800 Wh PowerPack. Packs and chargers don’t cross over between System 2 and the Smart System, so if you’re buying a replacement, match both the capacity and the system. Learn more about Bosch PowerPacks below:

