Bafang error 47: Battery SOC too high
Bafang CAN systems (M400/M500/M600/M620, DP C18 CAN, 850C/860C CAN)InformationSafe to keep riding
The BMS state-of-charge reading is above 100% or otherwise implausible. It is a data/calibration issue more than a real fault; the bike usually rides normally but the battery gauge is unreliable.
Likely causes
- BMS state-of-charge calibration drift
- Battery firmware bug
- Charger fault slightly overcharging the pack
How to fix Bafang error 47
- Ride the battery down to near empty and then charge fully to recalibrate the SOC
- Power cycle after charging
- Have the battery firmware updated by a dealer if the code keeps coming back
Go to a dealer if: Go to a shop if the gauge stays wrong after a full discharge/charge cycle.
Warranty: Covered under battery warranty as a firmware/BMS issue.
Typical cost: Usually free; dealer firmware update EUR/USD 20-60.
Warranty: Covered under battery warranty as a firmware/BMS issue.
Typical cost: Usually free; dealer firmware update EUR/USD 20-60.
Still stuck? Take a photo of the display and show it to a local e-bike workshop. Bring the bike's system name (e.g. Bosch Performance Line CX) and the exact code; that saves diagnostic time and money.
Frequently asked
Can I reset error 47?
A full discharge and recharge usually recalibrates it.
Can I keep riding?
Yes, the drive is unaffected.
Warranty?
Yes if it persists.
Related Bafang codes
Not an official Bafang document. Compiled from workshop experience and public service information; details can differ per system version and bike brand.