Extra battery and motherboard: connector Ninebot ES1 ES2 ES4 E22 E22E E22D E25 E25E E25D E45 E45E E45D

The connector on the extra battery can break when there is a gap between  the extra battery and the tube. This leads to burning in this connector  and then it needs to be replaced. The connector is difficult to replace  as you need to go into the extra battery, which is not designed to be  opened. 

We perform such work! 

The package includes both connectors.