Battery Charger Box (BCB) Failure
SeriousElectrics & ElectronicsThe BCB is responsible for managing AC charging. It is a common failure point, often caused by internal component failure or moisture ingress. A failed BCB will prevent the car from charging on AC, though DC rapid charging (if fitted) may still work.
Most affected: All Zoe models, especially Q210 and R90/R110
Typical symptoms
- •"Unable to charge" message
- •Car trips house circuit breaker when plugged in
- •Intermittent charging at 22kW/11kW
What to inspect before you buy
- ✓Test the car on both a home 7kW charger and a 22kW public post
- ✓Check for any "Check Electrical System" warnings
- ✓Verify charging begins immediately without errors