Yes: the Bosch PowerTube 500 (eBike System 2) (500 Wh, 36 V) is the native pack for a Bosch eBike System 2 (BES2) bike. The mount and charge port to confirm, and the systems it will not fit.
Updated 05 September 2026.
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Bosch eBike System 2 (BES2)Does the Bosch PowerTube 500 (eBike System 2) fit a Bosch eBike System 2 (BES2) bike?
Whether the Bosch PowerTube 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 PowerTube 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 PowerTube 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 PowerTube 500 (eBike System 2) is proprietary to the Bosch eBike System 2 (BES2) drive, so it fits that system and no other. The BES2 PowerTube 500 shares the smaller in-tube envelope with the 400, so a 400 and 500 can swap in the same frame. It uses the BES2 oval port and will not fit a 625 slot or a smart-system bike.
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.
Questions and answers
Does the Bosch PowerTube 500 (eBike System 2) fit a Bosch eBike System 2 (BES2) bike?
Yes, with the right mount. The Bosch PowerTube 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.