Error 39 on Segway-Ninebot E2, E2 Plus and E2 Plus II

In plain English

The battery protects itself when it's too hot or too cold to charge or ride safely. The code should clear once the battery is back at a normal temperature.

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.

1. 1Bring the scooter to room temperatureFree Battery temperature codes clear once the battery is back in its normal range. Bring the scooter indoors and wait before riding or charging. Don't charge it while it's freezing cold or very hot.
2. 2Let it cool downFree Switch off and let the scooter sit in the shade for at least 30 minutes. Overheating usually comes from long full-power rides, steep hills or hot weather.
3. 3Check 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.
4. 4Contact 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.