NIU KQi kick scooter error code list · NIU KQi scooters

Error 38 on NIU KQi scooters

What it means + how to fix it From the brand

Quick answer

Error 38 on the NIU KQi kick scooters (KQi2, KQi3, KQi3 Max) means “Battery charging overcurrent protection warning.” Most likely cause: the voltage got too high, often from a wrong or faulty charger. Try this first: unplug the charger and only use the original.

Try this first

Free, and each takes under 5 minutes.

Unplug the charger and only use the original
Check the outside of the deck (don't open it)

In plain English

The scooter protected itself because the voltage was higher than it should be. The most common cause is a charger that isn't the original one, or a faulty charger.

Step-by-step checklist

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

1Unplug the charger and only use the originalFree If this code showed while charging, unplug the charger. Only ever use the charger that came with the scooter: a wrong or faulty charger can damage the battery and is a fire risk.
2Check the outside of the deck (don't open it)Free Look at the outside only. If the deck is swollen or cracked, the charge port is wet or burnt, or it's very hot or smells, don't ride or charge it and contact support. If it smokes, get everyone out and call 911.
3Contact support or a service centerShop job If the code stays after these checks, stop riding and contact the brand's customer support or an authorized service center. Don't open the deck, battery, controller or motor: most scooter batteries and controllers aren't user-serviceable.

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, contact the brand's support or an authorized service center. Bring your notes on when it happens, plus the code.

Words on this page: Controller