why my macbook's battery health reached 97% in less than 10 months ...?

Lucifer_007 wrote:

why my macbook's battery health reached 97% in less than 10 months ...?

I see no issue here.

You do not have to micro-manage your battery.

You can still expect a cycle count of 1000.

Determine battery cycle count for Mac notebooks

https://support.apple.com/en-us/HT201585

The general rule of thumb—If you are near the mains leave it plugged in, if you need portability then run on the battery. Following after that general rule use as you see fit.

Don't obsess over an inexact parameter. "Health" is calculated from the nominal full charge capacity (FCC) of the battery. It's an average.

Some batteries come off the assembly line with lower FCCs and some higher. The last MacBook Pro I bought arrived with 102& health because that particular battery had a higher ACTUAL FCC (~5880 mah) than the average (5770 mah) for that model.

Your battery is normal and doing fine.

Those estimates do not tend to be very precise.

But If your battery continues at that exact same rate, it will not reach the 80 percent threshold (which Apple uses as a suggestion for when to replace) until it is about 66 months (five and a half years) old, a very good long life for a Notebook computer battery.

Batteries are a wear item, like soles of your shoes or the tires or brakes on your car. You will, eventually, have to replace batteries, based not only on Charge Cycles but alos on elapsed time since manufacture.

That seems good. Your battery is fine.

Learn more: https://support.apple.com/en-us/HT204054

It’s almost a year old. Batteries degrade over time. You’re battery is fine