Solved!
Go to SolutionA
Anitob07bc8
1 Rookie
•
4 Posts
•
14 Points
1
282
August 5th, 2026 09:53
XPS 9315, 4K LCD, battery life
HI everyone,
3 years ago I bought 2x XPS 9315 same spec but one had the 4K Touch Display.
The regular Laptop has great battery life
The 4K device has always been rubbish, less than 2 hours. I've fitted a new battery but no real change.
Can any one shed any light or offer an explanation for this?
(edited)
Anitob07bc8
1 Rookie
•
4 Posts
•
14 Points
1
0
Posted August 5th, 2026 10:57
Thanks for the reply.
Should I expect an improvement depending on the resolution or is the power consumer more baked in?You can reduce the screen brightness as much as you can tolerate, and reduce the CPU speed as much as the same -- these will help. You can't get the same battery runtime from a 4K model as one that has an FHD screen, no matter what you do.
Anitob07bc8
1 Rookie
•
4 Posts
•
14 Points
1
1
Posted August 5th, 2026 12:42
I think I've been an idiot for 3 years !!
I've always adjusted the zoom and kept the resolution in 4k. Dropping the resolution seems to have made a massive difference and once I've compensated the zoom my footprint is no different.......
ejn63
12 Elder
•
31650 Posts
•
155689 Points
1
1
Posted August 5th, 2026 10:54
The 4K display consumes far more power both itself and in that the GPU has to work that much harder to render that resolution -- it's completely normal to lose as much as half of your battery runtime to a system that has a 4K display relative to one with a lower resolution.