Q: There’s an Error 30 displayed in my NIUs dashboard A: Generally, this is a Battery failure code. The official manual provides these reasons and how to fix them: Battery over-charging Stop charging. Start discharging if it is normal. Low-temperature battery protection (-20 ℃) Restore the temperature The BMS temperature detection circuit is loose Replace the battery N1s owners reported several occasions when this happens: Charging the battery externally(!) it only reaches a 90% charge. Putting it back into the NIU triggers Error 30. Unplugging the charger right after the LED changed to green. After driving downhill, especially when the charge … Continue reading What’s Error 30?