Laptop battery wear after 7 months – is this normal? (My laptop is Predator PHN16-71 53M7)

DakLoc

I've been using my laptop for about 7 months. I always keep the device cool, even while gaming (I use a cooling pad, good thermal paste, and clean the internals regularly) and when playing heavy games, the GPU temperature stays between 50–80°C, and the CPU temperature ranges from 60–90°C. . I also usually keep it plugged in while working, and limit the charge to 80%. Recently, I checked the battery status using Windows Battery Report, and here are the results:

• Design Capacity: 90,090 mWh
• Full Charge Capacity: 81,728 mWh
• Cycle Count: 21 charge cycles

This means the battery has already lost around 9.3% capacity, even though it's only gone through 21 cycles.
The battery is made by Panasonic, model AP21A5T, and it's a Li-ion type.

My questions are:

• Is it normal for the battery to lose almost 10% capacity after just 21 cycles and 7 months of use?
• I’ve always kept the laptop cool, never letting it overheat, even under heavy load.
• Could it be because I leave it plugged in most of the time?
• Try battery calibration?

If anyone has experience with battery care, please share how to extend battery life effectively.

If the battery continues to degrade, should I send it in for warranty service (it’s still under warranty)?

Thanks in advance for any insights or recommendations!

GAMING6698

https://community.acer.com/en/discussion/726303/laptop-battery-wear-after-7-months-is-this-normal-my-laptop-is-predator-phn16-71-53m7

Your battery is well within healthy limits. Your habits are good, especially keeping your laptop cool and plugged in most of the time as battery as limited cycles so if you don't keep it plugged in most of time then cycles will drop.

However, I don't think the 80% battery limit has any real benefit. Personally, I never use the 80% battery limit because I find it unnecessary and it can sometimes cause power management or in-game issues. I keep my laptop charged to 100% and plugged in most of the time, and I perform battery calibration once every three months. I've been doing this since 2019, and my battery is still in very good condition.

You can use your laptop on battery when needed, but try not to do it too frequently and never let the charge drop below 20%. I also skip battery calibration if I’ve already used my laptop on battery recently.

Only for calibration, only let the battery drop to around 5%, then charge it back to 100%, and continue using it plugged in for the next few months