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Does a Specialized M3-700 fit a Bosch eBike System 2 (BES2) bike?
Whether a Specialized M3-700 fits a Bosch eBike System 2 (BES2) e-bike, and the pack you actually need.
No. The Specialized M3-700 is a Brose pack and a Bosch eBike System 2 (BES2) bike needs a Bosch pack. Batteries are proprietary per drive system and do not cross over.
| Battery | Specialized M3-700 (Brose, 700 Wh) |
|---|---|
| Target system | Bosch eBike System 2 (BES2) (Bosch) |
| Verdict | does not fit |
| Reason | different brand, mount and charge port; Brose and Bosch packs are not interchangeable |
| What to buy instead | a Bosch eBike System 2 (BES2) pack such as the Bosch PowerTube 625 (eBike System 2) |
E-bike batteries are proprietary to the drive system, which is the whole point of the design. The Specialized M3-700 is a Brose pack for Brose Drive / Specialized Turbo (Full Power), while a Bosch eBike System 2 (BES2) bike needs a Bosch pack with the Bosch mount and charge port. They do not cross over.
For a Bosch eBike System 2 (BES2) bike, fit a Bosch pack such as the Bosch PowerTube 625 (eBike System 2) (625 Wh, 36 V, BES2).
Sources: Specialized, M2 and M3 UL/EN series battery · The Loam Wolf, Specialized Turbo Levo Pro Gen 3 review · 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