Windows 10: Why my laptop Battery capacity decreasing fast ?

laptop Dell inspiron 5480. In June, I replaced old battery with new battery and you can see changes in full charge capacity and designed capacity.And there is a sudden decrease in full charge capacity in one mouth.2023-06-26 - 2023-07-0339,421 mWh42,000 mWh2023-07-0337,188 mWh42,000 mWh2023-07-0437,188 mWh42,000 mWhI am using my laptop daily and i keep laptop pluged in all the time while using.why is full charge capacity decreasing fast?Is keeping laptop plug in after 100% bad ?

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Battery full charge capacity decreased?





As you can probably see from the above image, my battery's full charge capacity has been decreased. Even though I just bought this laptop like 3 months ago, the laptops full charge capacity has been decreased by a huge amount like 5000mWh. I don't know what is causing this I have three questions...

i) What causes a battery to lose its Full Charge Capacity?

ii) Can a full charge capacity be increased (reversed) by using it the right way again?

iii) How can I save my battery from losing it's full charge capacity? Will using it plugged into the charger help it not get decreased?

 

Laptop battery capacity decreased 75% within 5 days without any usage?

My windows 10 laptop battery capacity was 40,263mWh on 25Dec2022 then it suddenly decreased to 19,437mWh. Now on 1st Jan 2023 it decreased to 10,742mWh. 40,263mWh to 10,742mwh. Where is fault?

 

Battery full charge capacity is decreasing

Hello there,

There is already a question in Microsoft forum but I can't reply it because it's locked:

Redirecting

My issue is very similiar, the only difference is that my laptop is Asus notebook A541UJ.

Here is the thing: I already bought 2 new batteries and within 5-6months of usage, the capacity goes from 28 000 kWh to like 6 000 kWh, so, my guess now is that the Windows Operating System is not dealing very well with the batteries. One of my latest battery report shows that I'm reaching 431% of battery capacity. Probably because I changed the battery and it considers the "100% full charge capacity" as 7 000 kWh and not the correct 28 000kWh (of the new battery).

Thank you for the attention

Filipe Silva