Windows 10: Battery full charge capacity suddenly decreased. Is there a way to manually force a...

Previously I accidentally deleted a partition in my C drive, and went through a ton of trouble before finally I managed to reformat my laptop back to a usable version. Since the very first formatting, battery life has been noticeably shorter, previously about 5 hours to less than 2 hours. Now, after the third and most successful reformatting, the battery is fluctuating like crazy, so I generated a battery report as shown:

REPORT TIME2020-11-0904:11:46







that period of suspension between 1.44 and 2.51 is when the reformat happened. Somehow, through the reset, more than 70% of my battery capacity disappeared, and now it is at a about 7% of design capacity, after 399 cycles. I feel that there must be a problem somewhere. What can I do to resolve this? I read an article that proposes the battery drivers are causing this, so I have looked for updates in Device Manager, and even uninstalled them before restarting my laptop. The problem persists.

:)

 

Full charge capacity of battery decreased

Repeat the steps Dave suggest you other three times.

Also you can uninstall and reinstall battery from device manager before each charge. You can do that:

1. Press WINDOWS + X

2. Click on "Device Manager"

3. Click on "Battery"

4. Right click on your battery

5. Click on "Uninstall device"

6. Repeat steps 4 and 5 for each element on battery list

7. Click on "Detects Hardware change" (monitor icon)

 

Full charge capacity of battery decreased

Sure! I'll do the steps again for 3 times. I'll reply with the result.

Thanks!!

 

Battery FULL CHARGE CAPACITY Reset

Yves,

"Full charge capacity" means the capacity that the battery is managing to achieve. It is not a limit set by Windows or anything else; it is merely a reading of what the battery can actually do. You can use the comparison of Full charge capacity with Design
capacity to decide when to buy a replacement battery [I do the same regularly].

Full charge capacity will always decrease over time as the battery wears out. This is a chemical phenomenon not a Windows-imposed characteristic.

Windows display of "Fully charged [100%]" means - the battery is currently at 100% of what it is able to achieve. In other words, "Fully charged [100%]" is relative to Full charge capacity.

Sometimes, you can find that cycling through the battery three times** can improve the Full charge capacity a bit.
On at least one of my batteries, the maker recommends doing this every three months. But doing so is using up even more of its remaining life so you can complete this procedure only to find that you are worse off afterwards.

** In other words, loop through this three times -

• remove the AC power
• use up the whole charge by using the computer
• recharge fully

Denis