Chosen Solution
Hello there, I have Samsung Galaxy S7 from 2016 year. Before 3 weeks I was charging him with original charger and cable (Fast Charging) and it stopped and doesn’t wanted anymore to be charging. I cleaned the port and wiping it out with Isopropyl alcohol but still doesn’t want to charge. I tryed to charge him up with my original samsung wireless charger. He started to charge but very very slow needed about 12 hours or more to charge to 100%. And after 2 days the wireless charging too doesn’t work anymore. I want to ment that before 1 month and half I replaced the battery with a new original one. I am a tech guy and repairing a phones. Everything went good. I checked what can be the problem inside but didn’t found something. I checked some youtube videos for this problem and saw some videos about 2 chips which needed to be resetted. I did this, but still the same issue. The phone doesn’t want to charge no matter how. My old battery was having a 50% life inside it and I put it back and the phone started up but doesn’t want to charge. I backed up my files wirelessly before the battery drained. I didn’t find any solution for now. I am searching for external battery docking station where I can put my battery to charge it up and put it back to phone to can back up everything. Is there a such devices and if yes can someone tell me for what to search? Because I searched in eBay but didn’t found anything there. Before years when I was having a Galaxy S4 there was a such devices, but for S7 I didnt find something. Please help me out. Thanks in advance.
@boomlex since you already replaced the battery with a new one, do an organized troubleshooting like suggested by Samsung for your model phone. Everything else is just costly and unnecessary replacement of parts.
It is possible to externally charge a lithium phone battery with a DC Bench Power Supply by connecting the positive and negative cables (I use multimeter probes) at 4.3V on the negative and positive pins of the battery connector on the battery itself. Be careful not to overcharge I stop charging them when they pull less than 1.0A. To determine polarity it should still at least have some power left to measure with multimeter.
As far as the battery with an external charger, it depends on the battery connection. If you have the old school flat contacts on the battery, a universal charger will work. I bought one off of eBay that works better than the one I found at batteries plus. Model YBY-001-018. I had the same problem with a galaxy j7 and ended up replacing the charger port / headphone / vibrator cable assembly. If Samsung had put the charge port on a board, I may have been able to replace just the charge port. Nope, all one piece.
