iPhone 13 Battery Health Drop

If you feel you got scammed, then take it back for a refund. Otherwise wait until it reaches 80% then get the battery replaced.

I'd take the battery health indication with a pinch of salt. It might give you a very general idea of your battery's condition at a given point of time, but it's by no means a 100 percent reliable tool to measure the battery's performance and the speed at which it deteriorates in real time. That said, your battery health might have been below the level your iphone indicated for some time without you knowing it until it "woke up" and started catching up with reality. My iphone 13 lost 1 percent after the first 6 months. Previously, my iphone 11 was stuck at 100 percent for 12 months, before the battery health started going down. But when it did, it kept going down by 2 percent each month. So the best way to assess the battery health is to use your experience in every day use.

My iPhone XR is still showing Maximum capacity of 95%. It dropped to 95% after three months of use and has been “stuck” there for over 3-1/2 years.

I personally don’t think that can possibly accurate, but what do I know. I’m not a heavy user so I don’t pay that much attention to that number, but I would think it lose some capacity even if it was turned off and put into a drawer and tucked away simply because it is closing in on being 4 years old.

That’s about right. And 99%, if it just changed, means 99.9% because the gauge does not round, it just drops the tenths.

Batteries are consumables; they lose a little capacity every time they are discharged, then recharged. On average this works out to about a 1% loss for every 25 “full charge cycles”. As one example, if you charge the phone overnight, every night (and that is what you should do; it is a best practice), it starts the day at 100%. If it drops to 20% by the end of the day before you charge it again overnight that counts as 0.8 full charge cycles (20% to 100%), or about 24 full charge cycles per month of use. For this example your battery capacity will lose about 1% per month. Of course, if the end-of-day level is higher than 20% the capacity loss will be a little less, and if it is lower than 20%, or you charge it during the day, the capacity loss will be higher.

Once the capacity drops below 80%, or if there is a message in Battery Health that the battery is not meeting peak performance expectations, it’s time to change the battery→iPhone Battery Replacement - Official Apple Support

The absolute best way to get maximum use on a charge, as well as slow the decline of battery capacity long term is to enable Optimized Battery Charging (Settings/Battery/Battery Health) and charge the device overnight, every night. The battery will fast charge to 80%, then pause. During the nighttime pause the phone will use mains power instead of battery power, allowing the battery to “rest”, and thus reducing the need to charge the battery quite as often. The phone will resume charging to reach 100% when you are ready to use your phone; it will “learn” your usage pattern. If you enable iCloud Backup (Settings/[your name]/iCloud - iCloud Backup) the phone will back up overnight also, assuring that you can never lose more than the current day’s updates. Here's more information→About Optimized Battery Charging on your iPhone - Apple Support

You should contact Apple for help if your phone is getting hot. You may have a hardware issue. You can start here.

Contact - Official Apple Support

I have owned an iPhone since the 5c and 5s days. This comment is the BEST one. ☝🏽☝🏽☝🏽

My battery is at 87%, but the week before the release of the new iPhones the time the charge lasts (with no changes to my phone) is greatly reduced.

Yes, I have. It's simple, typically done while you wait and comes with a one year warranty.

No, you just have been lucky with your battery chemistry to date.

You wait until it reaches 80% then replace the battery.

What about 6%… i bought it off a store in my country (not a apple store) i‘m concerned i got scammed

What do i do

Replace the battery when it is down to 80%.

Battery Health will decline at about 1% a month.

The only way to restore Battery Health to 100% would be to replace the battery with a new battery.

sujayshah wrote:

In last 2 months my battery health went from 100 to 93. It went from 95 to 94 in a week and then 94 to 93 in 2 days. We are being told that until its above 80% its fine. But the problem is that the rate at which it is declining, it won’t even be a year and it will be below 80%. That too when background refresh and notification are off for majority of apps, don’t play any games on it and also don’t have any social media except for whatsapp and linkedin. The most I do with the phone is spotify.

When was the phone purchased new?

The battery health percentage on your iPhone is a measure of the battery capacity relative to when it was new. It’s normal for this to slowly decrease over time. However, if you’re noticing a rapid drop, it might be due to the way you’re using or charging your device, or it could potentially be a software issue.

Here are some general tips to maintain your battery health:

1. Update to the latest software: Always make sure your device is running the latest version of iOS. Future updates may offer further improvements.

2. Optimize your settings: Some features can affect battery life. You might want to turn off dynamic wallpapers and motion effects, reduce screen brightness, or use Wi-Fi instead of cellular data.

3. Avoid extreme ambient temperatures: Your device is designed to perform well in a wide range of ambient temperatures. Exposure to extreme temperatures can affect battery health over time.

4. Understand battery usage: In Settings > Battery, you can check which apps are consuming most of your battery power.

5. Enable Optimized Battery Charging: Go to Settings > Battery > Battery Health and turn on Optimized Battery Charging. This feature learns your daily charging patterns and can slow down battery aging.

If the battery health continues to decrease rapidly after trying these tips, it might be worth reaching out to Apple Support. They can run a remote diagnostic on your battery and see if there might be a hardware issue.