What Bafang says
The battery's state of charge is too low.
Bafang's recommended steps
- Charge the battery.
- If it still shows, contact your retailer. Bafang's fix is a replacement battery.
Summarized from Bafang service FAQ (error 48), checked October 23, 2026. Follow the link for Bafang's exact wording.
If it keeps coming back
If the code comes back after one restart, stop using the assist and have the bike checked by a mechanic who works on Bafang systems. Bikes Plus works on Bafang and Bafang-style systems all the time.
Write down the code and what you were doing when it appeared. That saves time at the shop.
Make sure it's a Bafang code
Error numbers mean different things on different systems. This page covers bikes with a Bafang display (the Bafang name or logo is usually on the display or its back), on Bafang mid-drive and hub-motor systems. Displays with a screen keep the last 10 codes in the INFO or ERROR menu. LED-only displays flash the code: the first light flashes the tens digit and the second the units, so two flashes then five is 25.