Sorry I don’t have a fix for this yet, just letting you know I feel your pain. I have 2 controllers in the same boat and bought new batteries for them, worked but wouldn’t charge so I bought the charging ports and cables. changed those today and even thought one of them works for a few seconds at a time, still isn’t charging like it should and the other is slightly warm when on the charger but is unresponsive. Hope I can figure this out! If I do I’ll get back to you!