iPhone 13 battery health dropped 2% in a week

Things are averaging out. On average over longer periods of time, the battery will decline at an average of about 1% a month. But, the decline is not linear. The battery might go 3-4 months and not decline at all, then suddenly drop 2-3% over a few days.

Your phone as almost 6 months old, so it would be normal to expect that the battery would be in the 94-95% range at this time. At 12 months, it will be in the 88-90% range.

If you are really concerned about the battery, make an appointment at the Apple Store or take the phone to an authorized Apple service shop so they can run some checks and tests on the battery. You can find a list of authorized shops in your area using this link:

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The technicians will tell you that your battery is operating normally. The only thing that they will mention is that you will need to replace the battery when it down do 80% Maximum Capacity.

You are still 1% or less of what is the average expected Battery Health. I still don't see a problem there. Under ideal conditions the battery is designed to be at 80% Battery Health after 500 charge cycles. I suspect you are right around the 175 charge cycles as well. At anytime you can take it to the Apple Store for diagnostics, but personally I don't see anything that would be done or identify a problem.

One thing you do not want to do is prevent the phone from charging to 100%. That is the only time the Battery Health can be calibrated. It has been seen where users who manually try and control the charging by stopping it from charging to 100%, will see the larger adjustments when it does get a chance to calibrate.

Elleie wrote:

My battery is draining 1% every week. I dont know if thats normal to you too.. also what do u mean abt trying not to charge it to 100? Does that mean i have to charge it to 100? i cant see my cycle count so i cant confirm how many cycles i had already

Some people think they are extending their battery health by not charging it to 100%. The problem with this approach is that the battery needs to charge to 100% to calibrate the battery health, so what those users find is that the battery health will show a large adjustment when it does get a chance to calibrate because it has been prevented from doing that previously. The best approach to charging your battery is simply turn on Optimized Charging and charge your phone every night, all night.

Everything you have posted on your Battery Health is showing what is expected, with the average showing a 1% drop a month. Some months may not drop at all and other months may drop more. That is what it means by averaging over several months. Nothing to be concerned about.

You can make an appointment at the Apple Store, but I think you will be frustrated when the Genius explains that your battery checks out OK.

You will drive yourself crazy if you are checking the battery all the time.

Stop worrying and plan to replace the battery.....about $90.....when the Max Capacity is down to 80%.

You’ll drive yourself crazy worrying about a change over a short period of time like a day or two. Why?

Lithium ion batteries have a life of about 5 years from date of manufacture if charged properly.

So 5 years at 365 days a year would be about 1800 days. Two days is just .1% (1/10 of 1%) of your batteries life. You’ve a long way to go and you’re going to worry yourself to death over nothing.

Is there a way to check if my battery is original?

If the battery was NOT genuine, a message about an "Unknown Part" would appear on the iPhone's screen when you check battery settings.

Your battery is fine. It will not help to worry about your battery.