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Bosch eBike System 2 (BES2)Does the Bosch PowerPack 500 (eBike System 2) fit a Bosch eBike System 2 (BES2) bike?
Whether the Bosch PowerPack 500 (eBike System 2) fits a Bosch eBike System 2 (BES2) e-bike, and what to confirm on your own frame first.
Yes, with the right mount. The Bosch PowerPack 500 (eBike System 2) is the native pack for a Bosch eBike System 2 (BES2) bike (500 Wh, 36 V), charged through the Bosch eBike System 2 oval charge port.
| Battery | Bosch PowerPack 500 (eBike System 2) (500 Wh, 36 V) |
|---|---|
| Native drive system | Bosch eBike System 2 (BES2) |
| Verdict | fits (native pack) |
| Charge port | Bosch eBike System 2 oval charge port |
| Will not fit | a different drive system, or a different Bosch/Shimano generation even if the shape matches |
The Bosch PowerPack 500 (eBike System 2) is proprietary to the Bosch eBike System 2 (BES2) drive, so it fits that system and no other. The PowerPack 500 is the larger external BES2 pack. Frame 400 and 500 packs are interchangeable, but rack and frame versions use different mounts, so match the mount as well as the capacity.
Confirm the mount and the Bosch eBike System 2 oval charge port on your own frame, because packs that look identical across generations do not always interchange.
Sources: Bosch eBike Systems, PowerPack frame batteries · Bosch eBike Systems, PowerPack rack batteries · Urban Arrow Service Center, Differences between Bosch eBike System 2 (BES2) and Smart System (BES3) · Propel Electric Bikes, Bosch PowerPack battery · Propel Electric Bikes, Bosch Standard Charger 4A eBike System 2