Galaxy auxiliary battery malfunction

Hey! I had a similar issue with my Galaxy not too long ago. Same symptoms – the error message, the sluggish starts. Have you checked the connections to the battery itself? I remember wiggling mine and it seemed to help temporarily, but the problem came back.

Thanks for the quick reply! You mention checking the connections. Were your issues completely resolved by just cleaning/tightening the connections, or did you have to do more?

Unfortunately, just tightening the connections was only a temporary fix for me. The problem kept returning. Eventually, I had to take it to a workshop. They diagnosed it as a faulty auxiliary battery that wasn't holding a charge properly. I'd recommend getting yours checked out professionally to be sure.

Thanks a lot for sharing your experience! It sounds like I'm heading down the same path. I appreciate the advice; I'll take it to a workshop for a proper diagnosis. Indeed it was the auxiliary battery; total repair cost was 290€