Seems I am now regretting my purchase of a new Dell XPS 15 Laptop.
Purchased on 20th September 2016, and seems as of 5 days ago the battery already needs replacing.
LED on front of laptop just flashes orange, battery status button on the side has LED's 1, 3 and 5 lit.
In Windows 10 Battery says "Plugged in, Not Charging" with 79% available
In BIOS battery says "Battery needs replacing", AC Adapter - 130w and 79% charged.
Laptop will no longer work on battery, has to have AC adapted plugged in and when removed it'll just power off.
After the fact I enabled the USB power option (charging phones etc. when laptop is off) and it doesn't charge without AC Adapter plugged in.
Rather annoyed at myself, I have always avoided Dell but I went against my gut instinct and spent £1400 on a laptop that is no longer fit for purpose.
Guess it's time to buy a replacement battery and never buy anything from dell again