Should I replace my iPhone 8 battery if the health is at 68%?

You should have Apple or an Apple Authorized Service provider replace the battery once the Battery Health drops below 80%.

My iPhone sent me a notification, and put up a permanent message in Settings when that happened. I scheduled an appointment with an Authorized Apple Service provider. They replaced the battery and had the phone back to me later on the same day that I dropped it off.

If you decide to replace your iPhone 8's battery, you may find the following helpful:

iPhone Battery Replacement - Apple Support

Prepare your iPhone or iPad for service - Apple Support

If you decide to upgrade to a new (or newer) iPhone, you may find the following helpful:

Apple Trade In - Apple

Refurbished iPhone Deals - Apple

iPhone - Apple

Use Quick Start to transfer data to a new iPhone or iPad - Apple Support

What to do before you sell, give away, or trade in your iPhone or iPad - Apple Support

The All Too Common SAD Reality of Buying a Used iPad/iPhone – Apple Community

The battery is long overdue for a replacement.

If you want to continue to use the iPhone, make an appointment at the Apple Store / Genius Bar or take the phone to an authorized Apple service shop.

About $80-90 (U.S.). With luck, this will give you a few more years of use on the phone, if it will run the apps that you want.

You can find a list of authorized shops in your area using this link:

Find Locations

You should have it replaced by Apple or an authorized service provider. You should absolutely NOT attempt to replace it yourself or take it to a we-fix-cell phones kiosk at your local mall.

In addition to the excellent advice offered by our top contributors, the internal battery is not user replaceable.

It can be replaced; however, you have a very old device that has been obsolete for several years now.

The iPhone 8 has reached the end-of-life support for Software Updates to the latest iOS operating system, depriving you of features created years ago.

Many modern apps are not compatible, limiting the usability of your device.

You are invited to visit an Apple retail store to discuss your iPhone upgrade options.

Learn about the ⇢ iPhone Upgrade Program. ⇠📲

Good luck! 👋🏼😉

i suggest you to change the iphone instead of changing its battery

nitinbaisoya wrote:

i suggest you to change the iphone instead of changing its battery

Sorry, I misread your post. I too recommend they replace their phone with a new iPhone.

tomfranky2025 wrote:

Also not interested in the business policy of Apple!

I believe that the suggestions that people have given you to replace the phone are not based on the "business policy of Apple", but on the fact that you have an old phone. For now, iOS 16.* is still good enough to run many current apps – but that could change within the next couple of years.

The iPhone 8 received five major iOS updates, but it cannot update to iOS 17 or higher. Is it worth getting the replacement battery service anyway? That's for you to decide. You know better than us which apps you rely upon, besides those that are bundled with iOS.

For information:

• The iPhone 8 has 2 GB of RAM. All iPhones that can run iOS 17 or higher have more. Those that support Apple Intelligence have 8 GB; most others have 4 or 6 GB.
• The iPhone 8 has a 2-core Neural Engine. All Phones that can run iOS 17 or higher have one with 8 or 16 cores.

tomfranky2025 wrote:

When I renew the battery:

1- Does its health go to %100?

If you have Apple or an Apple Authorized Service Provider replace the battery, they will remove the old battery from your phone, and put it a new Apple OEM one. The new battery's health will start at 100%. Over time, the health will go down – much as the original battery's health did.

If an unauthorized repair shop puts a non-Apple battery in, I believe that the phone may show a message to the effect that it cannot determine the health of the battery.

Check the iPhone battery health and usage - Apple Support

iPhone battery and performance - Apple Support

"All rechargeable batteries are consumable components that become less effective as they chemically age."

tomfranky2025 wrote:

When I renew the battery:

1- Does its health go to %100?

2- Should I recharge it when it's, say %3 ~ %4 and plug it out at say, %96 (for better longevity)?

See also:

When to charge your iPhone or iPad - Apple Community

Your iPhone battery SHOULD have been replaced when battery health dipped to 80%. So yes, you're beyond the time to replace the battery. And if you continue to wait, the battery could swell and damage your phone or worse go up in flames. A bigger question is whether it's worth investing any money in an iPhone 8. It is forever frozen at iOS 16.7.11. It can't run anything higher, like iOS 17, iOS 18 or the soon to come, iOS 26. You're going to find many app developers will end support for their apps on a phone as old as your phone. It's up to you, of course, but I personally would be looking at buying a new, much more modern iPhone at this time.