How can I optimize my iPhone's battery health beyond standard recommendations?

The measure of battery health deterioration/drainage is subjective and can vary depending on individual usage patterns. There is no universal standard to determine whether the battery health deterioration/drainage is normal or abnormal because it heavily relies on how the battery is used and maintained.

Protect & Prolong the Life of your iPhone's Battery:

1. About the battery usage on your iPhone, iPad, and iPod touch ...
2. Batteries - Maximising Performance - Apple (IN)
3. iPhone Battery and Performance

Try to monitor Battery usage by iPhone Activity as shown below

What is shown under battery usage? Checking that would give you an indication of the usage behavior.

1. Background Activity
2. Notifications
3. Connected to Charger
4. Or any Other

See the pic below (iPhone 12 Pro iOS 17.3.1)

"Show Activity" feature will show you more info see the pic below

Try some of these options too.

To prolong the life of your iPhone battery, you can follow these tips and best practices:

To prolong the life of your iPhone battery, you can follow these tips and best practices:

1. Optimize Battery Charging: Enable the "Optimized Battery Charging" feature on your iPhone. It helps reduce the wear on the battery by slowing down the battery aging process. You can find this option in Settings > Battery > Battery Health. About Optimized Battery Charging on your iPhone - Apple Support (IN)
2. Avoid Extreme Temperatures: Extreme temperatures, both hot and cold, can negatively impact your battery life. Avoid exposing your iPhone to excessive heat or cold, such as leaving it in direct sunlight or in a freezing car.If your iPhone or iPad gets too hot or too cold – Apple Support (UK)
3. Use Original Chargers and Cables: Always use Apple's original chargers and cables or certified third-party accessories. Low-quality chargers or cables can damage the battery and reduce its lifespan. Identify counterfeit or uncertified Lightning connector accessories - Apple Support (IN)
4. Avoid Draining the Battery to Zero: Charge it whenever the charge becomes lower than 20%. The rest is up to you when to charge. how long to charge, how often to charge, which adapter to use starting from 5W to 140W USB-C Power Adapter etc.
5. Optimize Display Settings: Adjust your display settings to optimize battery life. Lower the screen brightness, enable auto-brightness, and use shorter screen timeout durations. Adjust the display and text size on iPhone - Apple Support (IN)
6. Minimize Background App Refresh: Limit the number of apps allowed to refresh in the background. Go to Settings > General > Background App Refresh and disable it for apps that don't require real-time updates. Switch apps on your iPhone, iPad, or iPod touch - Apple Support (IN)
7. Disable Push Email: Push email notifications can drain your battery quickly. Instead, set your email accounts to fetch data manually or at longer intervals. You can change this setting in Settings > Mail > Accounts > Fetch New Data.
8. Disable Unnecessary Notifications: Reduce the number of unnecessary notifications you receive. Go to Settings > Notifications and customize which apps can send you notifications.
9. Limit Location Services: Some apps use GPS and location services in the background, which can drain your battery. Go to Settings > Privacy > Location Services and disable location access for apps that don't require it.

I'm not convinced that the 80% limit is anywhere close to all that it is cracked up to be. Yes, there are articles about the "advantages" of doing this and I have tried it for about 6 months and all that I have really concluded is that you have to charge the battery more often using this method.

The battery still charges to 100% "on occasion", but I'm not sure what that really means. "On occasion" seemed to be a few times each month for me, but I imagine that other users are seeing quite different "occasions".

I am going to continue to use the method that I've used for years with other phones....simply enabling Optimized Battery Charging, ignoring the 80% limit setting....if it is present....and connecting the phone to the power adapter at night and leaving it connected all night.....every night.

The battery starts at 100% each day, so I get more time from a single charge and rarely have to charge the phone again during the day.

Over the long haul, the 80% method might result in a month or two more battery life, but as long as I'm getting 4-5 years from the battery, I could care less that someone might get another month or two from their battery.

Watch for more gimmicks on newer iOS versions regarding battery life. After all, if 80% is better than 100%, then 70% must be better than 80%.

My opinion......worth about as much as you had to pay to view this page......users in general are spending way too much time checking and worrying about the battery. It's a battery folks, you will have to replace it at some point unless you trade up to a new phone every 2-3 years. I have better ways to spend my time.