Chosen Solution
My customer brought in this Macbook Pro. It had a bad battery that was swollen. He had brought it in because it wasn’t charging and eventually it went down to 0% on him and he couldn’t use it so he brought it to us. I almost always just remove the battery and all power sources and let it sit for a bit to discharge so I tried that and it started charging again. I figured it did that because it knew the battery was failing. Got him a new battery installed and it was charging fine so I sent it out the door on 3/29/21. A week later on 4/5/21 he brought it back to me for the same issue. This time the battery hadn’t completely discharged so I could observe what it was doing. It would discharge fairly quick on just battery and would discharge very slowly when the battery was connected. I tried his and my power adapter and several cables with the same result. His power adapter is aftermarket, which I suspect may be an issue because Macs are picky about that. It saw all power adapters, but it wouldn’t charge. After while of messing around and trying PRAM reset and such I just removed the battery for a bit and tried again. It started charging. Charges with my Apple charger as well as his aftermarket one. I’m just going to send it back out with him for now to try it and see what happens, but if it happens again and he brings it back, has anyone seen this issue and know what the fix is? Could it be something to do with his aftermarket charger?
