How to fix battery connection error?

@yogie9400 could be caused by a bad battery, a bad charging board or a bad flex cable from the charging board to the battery. Time to start somewhere so go with the battery and the charging board. both parts are readily available at many online stores and are not very expensive. It is just easier and smarter to replace both of those at the same time instead of working on one and then having to open the phone again to work on the other part.

Since ifixit does not yet have a specific guide for this use the one from here for the battery. For the charging board use this one Both of those are written in Spanish. Use a browser that does the translating for you, if needed. Make sure that you check the flex cable from your charging board to your battery. Check for microtears, corrosion etc.

While you work on your phone, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has the same issues with their phone. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this.

Repair is War on Entropy!