Yes: the Bosch PowerMore 250 (smart system range extender) (250 Wh, 36 V) is the native pack for a Bosch Smart System (BES3) bike. The mount and charge port to confirm, and the systems it will not fit.
Updated 05 September 2026.
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Bosch Smart System (BES3)Does the Bosch PowerMore 250 (smart system range extender) fit a Bosch Smart System (BES3) bike?
Whether the Bosch PowerMore 250 (smart system range extender) fits a Bosch Smart System (BES3) e-bike, and what to confirm on your own frame first.
Yes, with the right mount. The Bosch PowerMore 250 (smart system range extender) is the native pack for a Bosch Smart System (BES3) bike (250 Wh, 36 V), charged through the Bosch smart-system round charge port.
| Battery | Bosch PowerMore 250 (smart system range extender) (250 Wh, 36 V) |
|---|---|
| Native drive system | Bosch Smart System (BES3) |
| Verdict | fits (native pack) |
| Charge port | Bosch smart-system round charge port |
| Will not fit | a different drive system, or a different Bosch/Shimano generation even if the shape matches |
The Bosch PowerMore 250 (smart system range extender) is proprietary to the Bosch Smart System (BES3) drive, so it fits that system and no other. The PowerMore 250 is a smart-system range extender, about the size of a bottle, that adds capacity to the main pack on supported BES3 bikes. It is a smart-system-only accessory and does not work on eBike System 2.
Confirm the mount and the Bosch smart-system round charge port on your own frame, because packs that look identical across generations do not always interchange.
Questions and answers
Does the Bosch PowerMore 250 (smart system range extender) fit a Bosch Smart System (BES3) bike?
Yes, with the right mount. The Bosch PowerMore 250 (smart system range extender) is the native pack for a Bosch Smart System (BES3) bike (250 Wh, 36 V), charged through the Bosch smart-system round charge port.