Odd battery problem

[CreepHunter]

this is a very odd problem in windows and this is whats been happening: for some reason every Sunday for 3 weeks now iv been getting pluged in not charging and everytime it would be at 97% once at 12 am once at 7pm and once at 1:20 am i keep my laptop plugged in at all times and do not move it cause its a powerful laptop that i use as a desktop with a unremovavble battery i do fix it within the hour by unplug in the cord changing the power plan to balance and plugging back in, i repeat that prosses many times till it starts charging(i do it many times that it goes down to 95% then when i do it it starts charging), its really annoying and the the looks of things it looks like a bug in windows cause i dont move my laptop at all so its always at 100% and it starts doing that consistently every week around the same time and always goes to 97% and i do unplug it sometimes when taking it somewhere and when i come home and plug it in it charges so idk whats going on maybe someone has had this happen before and knows how to fix it permanently. the battery were is 4% so maybe thats why it goes to 97% when pluged in not charging but idk

 

[Nine Layer Nige]

You will use less electricity if you can run your laptop without the old battery plugged in. If you have the laptop permanently connected to the mains, you don't need the battery in.

 

[CreepHunter]

You will use less electricity if you can run your laptop without the old battery plugged in. If you have the laptop permanently connected to the mains, you don't need the battery in.

The laptop is 3 months old and has very little wear and it's not removable it must be something from the power plans resetting every week or something but idk exact and I take it to school once a week and when I charge it from that it's charges it only does the glitch on Sundays once a week

 

[Nine Layer Nige]

I mis-read your post.
Maybe it is not quite accurate reading, but if its always plugged in, then it seems to be a non-problem anyway.