Velotric error code list · Velotric

E20 Error on Velotric

What it means + how to fix it From the brand

Quick answer

E20 on the Velotric (Discover, Nomad, Summit, Fold, Breeze, Triker, T1, GoMad, Tempo) means “Excessive Power Supply to Display.” Most likely cause: a battery or charger whose voltage doesn't match the system, or a battery fault. Try this first: check the battery matches your system.

Try this first

Free, and each takes under 5 minutes.

Check the battery matches your system
Remove and re-insert the battery
Turn it off and on again

In plain English

The system has measured a battery voltage above what the controller allows, and has shut down to protect itself.

Step-by-step checklist

Work from the top. Steps go from free and easy to shop jobs. Switch the bike off before touching any connector. Tick each step as you go. Your progress is saved on this device.

1Check the battery matches your systemFree Compare the voltage printed on your battery with the voltage on your controller or motor label. They must match. Never use a higher-voltage battery than the system is built for.
2Remove and re-insert the batteryFree Switch off, take the battery out, then put it back in until it locks. Switch on and see if the code clears.
3Turn it off and on againFree Switch the display off, wait 30 seconds, then switch it back on. If the code clears, note what you were doing when it appeared, in case it comes back.
4Have the battery and controller checkedShop job If the code stays, a shop can measure the battery and test the controller. Don't keep riding with this code.

Parts you might need

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Only buy a part if the free steps didn't fix it. Always match the voltage and connector type to your bike.

Replacement e-bike charger
Only if your charger is faulty. Must match your battery's voltage and plug type exactly.
Match your bike's model first. Ask a shop if unsure.
Replacement e-bike battery
Only if a shop confirms your battery is worn out or faulty. Must match voltage, mount and connector.
Match your bike's model first. Ask a shop if unsure.

Still not fixed?

Pages to try next:

When it's time for a shop: if you've worked through every step and the problem is still there, take the bike to an e-bike shop. Bring your notes on when it happens, plus the code.

Words on this page: Controller