Most common causes
Poor battery contact
Does the battery rattle in the holder? Then it loses contact when hitting a bump. A worn battery holder or dirty contacts are the cause. View battery locks.
Loose or damp connector
The connectors at the handlebars and the motor connector are particularly sensitive. A thin layer of contact grease prevents oxidation. View wiring harnesses for the Ouxi V8.
Battery voltage drops under load
An older battery may still show a charge, but its voltage drops as soon as you put it under load (accelerating, going uphill). The bike then switches off. View batteries for the Ouxi V8.
Brake sensor remains engaged
If the controller thinks you are braking, the assistance will cut out. Check that both brake levers spring back properly. View brakes and brake sensors for the Ouxi V8.
Controller overheated or defective
Does the bike cut out especially after prolonged heavy use? Then the controller may be overheated or defective. The V8 1.0 has its own controller. 2024-2025 models have a controller with a black motor connector, while the V8 Pro and V8 Ultra have a new controller with a red connector. View controllers for the Ouxi V8.
What you need to know about the Ouxi V8
- The V8 1.0 has its own controller. 2024-2025 models have a controller with a black motor connector, while the V8 Pro and V8 Ultra have a new controller with a red connector.
- The Ouxi V8 2.0 and 3.0 have the M5 display (old or new version, limited to 25 km/h). The V8 4.0 has the HC80 display. The V8 1.0 has its own display with a short cable, and the V8 Ultra has a GT20 display.
- The Ouxi V8 charges with a 1-pin charger, the same as the H9, the C80, and the old Qmwheel V20 (2022-2023).
Step-by-step guide
- Start simple: fully charge the battery, reinsert the battery, and check all connectors at the handlebars.
- Check the display: note any error code or take a photo.
- Send us a photo of the display, connector, or part via WhatsApp. We will tell you which part you need.
- Do it yourself or have it done: order the part, or book an appointment in The Hague or Zoetermeer. Your bike is often ready the same day.
Never work on the electronics while the battery is in the bike, and never open a battery yourself. Lithium batteries can be dangerous if damaged.
Other faults with the Ouxi V8
- Ouxi V8 does not turn on
- Ouxi V8 pedal assistance does not work
- Ouxi V8 display: does nothing or shows an error code
- Ouxi V8 motor makes noise or does not pull
- Ouxi V8 battery does not charge
- All faults with the Ouxi V8
Frequently asked questions
Can I fix this myself?
Simple causes (charging the battery, checking connectors) certainly. For electronics and the motor, we recommend the workshop, or first send a photo via WhatsApp.
How much does a repair cost?
View the fixed prices on book an appointment. If you do not know what is wrong, choose the inspection fee (€ 30), which is waived if we carry out the repair.
Do you have parts for the Ouxi V8 in stock?
Yes, view all parts for the Ouxi V8.