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Bosch eBike System 2 oval charge port (BES2 oval plug): pinout, rating and use
What the Bosch eBike System 2 oval charge port carries, how it is rated, and which e-bike systems use it.
Power panel
Voltage
36 V nominal pack
Connector data
| Pins / contacts | keyed oval contact, BES2 specific |
|---|---|
| Current rating | 4 A on the BES2 standard charger |
| Voltage range | 36 V nominal pack |
| Locking | keyed oval, BES2 only |
| Common uses | Bosch eBike System 2 PowerPack (frame and rack) and PowerTube batteries |
Common uses: Bosch eBike System 2 PowerPack (frame and rack) and PowerTube batteries.
The BES2 oval charge port is used across all eBike System 2 PowerPack and PowerTube batteries. It is not the smart-system round port, so a smart-system charger is the wrong unit for a BES2 bike and vice versa.
Systems and other connectors
XLR 3-pin charge connector3-pin locking, up to 16 ADC barrel (coaxial) charge connector5.5 x 2.1 or 5.5 x 2.5 mm
Sources: Propel Electric Bikes, Bosch Standard Charger 4A eBike System 2 ยท Bosch eBike Systems, Charger