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.
| Drive system | Bafang CAN systems (M400/M500/M600/M620, DP C18 CAN, 850C/860C CAN) |
| Severity | Information |
| Keep riding? | Safe to keep riding |
| Typical cost | Usually free; dealer firmware update EUR/USD 20-60. |
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
Manuals and video
Not an official Bafang document. Compiled from workshop experience and public service information; details can differ per system version and bike brand.