A Winora Flitzer (smart system) runs the Bosch Smart System (BES3), so it takes the Bosch CompactTube 400 (smart system) (400 Wh, 36 V, BES3). The exact pack, the charger, and the trap to avoid.
Updated 05 September 2026.
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Bosch Smart System (BES3)Which replacement battery fits a Winora Flitzer (smart system)?
The replacement battery that fits a Winora Flitzer (smart system), the charger it uses, and what not to buy.
Fits with the Bosch CompactTube 400 (smart system). A Winora Flitzer (smart system) runs the Bosch Smart System (BES3), so the replacement battery is the Bosch CompactTube 400 (smart system) (400 Wh, 36 V, BES3).
| Bike | Winora Flitzer (smart system) |
|---|---|
| Drive system | Bosch Smart System (BES3) |
| Battery that fits | Bosch CompactTube 400 (smart system) (400 Wh, 36 V, BES3) |
| Charge port | Bosch smart-system round charge port |
| Charger | Bosch Standard Charger 4A (smart system) |
The Winora Flitzer (smart system) runs the Bosch Smart System (BES3), a Bosch drive whose battery is proprietary to the system, so the replacement pack is one of its own, most often the Bosch CompactTube 400 (smart system) (400 Wh, 36 V, BES3), charged through the Bosch smart-system round charge port.
The Bosch smart system (BES3) shares nothing with the older eBike System 2: a BES2 PowerPack or PowerTube will not run this bike even where the pack looks identical, so confirm the smart-system display and the printed battery model number.
Questions and answers
Which replacement battery fits a Winora Flitzer (smart system)?
Fits with the Bosch CompactTube 400 (smart system). A Winora Flitzer (smart system) runs the Bosch Smart System (BES3), so the replacement battery is the Bosch CompactTube 400 (smart system) (400 Wh, 36 V, BES3).