Yes: the Yamaha Intube 400 Wh (400 Wh, 36 V) is the native pack for a Yamaha PW-X3 / PW-ST / PW-TE bike. The mount and charge port to confirm, and the systems it will not fit.
Updated 05 September 2026.
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Yamaha PW-X3 / PW-ST / PW-TEDoes the Yamaha Intube 400 Wh fit a Yamaha PW-X3 / PW-ST / PW-TE bike?
Whether the Yamaha Intube 400 Wh fits a Yamaha PW-X3 / PW-ST / PW-TE e-bike, and what to confirm on your own frame first.
Yes, with the right mount. The Yamaha Intube 400 Wh is the native pack for a Yamaha PW-X3 / PW-ST / PW-TE bike (400 Wh, 36 V), charged through the Yamaha PW-series charge connector.
| Battery | Yamaha Intube 400 Wh (400 Wh, 36 V) |
|---|---|
| Native drive system | Yamaha PW-X3 / PW-ST / PW-TE |
| Verdict | fits (native pack) |
| Charge port | Yamaha PW-series charge connector |
| Will not fit | a different drive system, or a different Bosch/Shimano generation even if the shape matches |
The Yamaha Intube 400 Wh is proprietary to the Yamaha PW-X3 / PW-ST / PW-TE drive, so it fits that system and no other. The Yamaha Intube 400 Wh is the lighter in-tube pack for the 36 V PW range. It shares the in-tube mount and Yamaha charge port with the 500 and 600 Wh in-tube packs, so those are the capacity upgrades.
Confirm the mount and the Yamaha PW-series charge connector on your own frame, because packs that look identical across generations do not always interchange.
Questions and answers
Does the Yamaha Intube 400 Wh fit a Yamaha PW-X3 / PW-ST / PW-TE bike?
Yes, with the right mount. The Yamaha Intube 400 Wh is the native pack for a Yamaha PW-X3 / PW-ST / PW-TE bike (400 Wh, 36 V), charged through the Yamaha PW-series charge connector.