The original Dell battery swelled up and was replaced under warranty. The replacement battery lasted a couple of months and was so swollen it broke my keyboard and trackpad.

Dell support refused to fix it and couldn't provide me with a battery because they were completely out.

I tried 3 different vendors and all 3 batteries failed to work because Dell has battery DRM.

I can't even use it plugged in because the GPU/CPU throttle themselves without a battery hooked up.

My i7, 32gb ram, 4k laptop is a giant dud. Never again.