Shimano STEPS
Battery
E021
Connected battery not supported by this system
The battery connected to the drive unit meets Shimano's system standards but is not approved for this particular configuration, so assist is disabled. This typically occurs when a battery from a different STEPS series or an incompatible replacement is fitted. Only a battery matching the system configuration will clear the error permanently.
- Drive system
- Shimano STEPS
- Category
- Battery
- Motor behavior
- assist off
- DIY-friendly?
- shop recommended
Roadside self-help
- Turn the power off and on again.
- If you recently changed the battery, refit the original one and contact your dealer about compatibility.
Possible causes
- Battery from another series or incompatible replacement fitted high
- System configuration does not match the installed battery medium
Symptoms
- No assist although the battery is charged
- Error appears right after switching on
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- dealer diagnostic tool required
- Component: battery
- Component: battery management system
Applies to
E5000
E6000
E6100
E7000
E8000