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DELL XPS battery runs out instantly under loads

tommasoperrone95

Prominent
Dec 27, 2017
1
0
510
Hello, I'm a Dell XPS 15 9550 user since last year. I've been having this battery problem for at least 6-8 months, it doesn't seem to get worse, it's just there, so I kinda skipped solving it for all this time.
When i'm using it on battery power, even when it's 100% charged, and I decide to use some medium-work applications like Lightroom, Photoshop or even worse Premiere, my computer instanty turns off, as if the battery ran out. Indeed when I try to turn it on it keeps telling me that the battery is out (usually it is right at 1% or even 0%). The funny thing is that after turning it back on I can use it right away without any other intermission. It's like the computer can't recognize how much battery percentage I have, even if it's full.
Obviously, my premium support is expired.
Any help is appreciated, thank you!