XPS 15 9560 battery charge issue

Hello all, I'm looking for some help with this issue after many attempts at other solutions. Basically, starting about two weeks ago, the battery in my XPS 15 9560 (running windows 10 64bit) won't charge at all. Here are some observations based on my troubleshooting thus far: I can run the laptop off of AC power but any interruption and it immediately shuts off. I can also run the laptop with the battery fully disconnected, but this results in slow performance and the fans are clearly struggling to run without the battery, which is odd considering that the battery shows no charge but clearly still affects my performance. I have updated my BIOS and all other relevant drivers to the latest available versions. Also, when I look at diagnostics in the BIOS, it correctly identifies my AC adaptor as a 130w unit and rates my battery health as excellent. One last important point is that this battery is a replacement after the first suffered from the common battery swell issue. Do you think this is a problem in the new battery or the motherboard, or is there another component which could be causing this malfunction? Any help would be greatly appreciated!