Keeping an eye on your battery health is one of the simplest ways to know what your iPhone or iPad is worth, especially if you are planning to sell or trade it in. It takes about three taps, and this guide walks you through it and explains what the numbers actually mean.
How to check battery health on iPhone
Open Settings: Find and tap the "Settings" app on your iPhone.
Select Battery: Scroll down and tap on "Battery."
Access Battery Health: Tap on "Battery Health" (on iPhone 15 and newer this is called "Battery Health & Charging") to view your battery's current status.
How to check battery health on iPad
Apple added a battery health screen to iPad starting with iPadOS 17.4, so newer iPads show the same information. Go to Settings > Battery > Battery Health to see your iPad's Maximum Capacity and cycle count. Older iPads that have not updated to iPadOS 17.4 or later will not display this screen.
What the numbers mean
Maximum Capacity: How much charge your battery holds compared to when it was new, shown as a percentage. As a quick guide: 90 to 100 percent is excellent, 80 to 89 percent is good and still healthy, and below 80 percent means the battery has noticeably degraded.
Peak Performance Capability: Tells you whether the battery can still support your device's peak performance, or whether it has started to affect speed.
Cycle Count: On iPhone 15 and newer, including the iPhone 16 and iPhone 17 lineups, you can also see how many full charge cycles your battery has been through. Go to Settings > General > About and scroll to "Cycle Count." Apple designs these batteries to keep up to 80 percent of their capacity after 1,000 full cycles.
What "below 80%" means
Once Maximum Capacity drops below 80 percent, your battery holds significantly less charge than when it was new. You may see a "Service" recommendation on the Battery Health screen. This affects day-to-day performance and battery life, and it also lowers the device's resale value, since a fresh battery is worth more to the next owner.
How battery health affects your trade-in value
Battery health is one of the factors we use to calculate a fair, instant offer for your device. A higher Maximum Capacity generally means a higher payout, which is why it is worth checking before you sell. You can get an instant quote for your iPhone in under a minute and see exactly what it is worth today.
Frequently asked questions
What is a good battery health to sell an iPhone? 80 percent or higher is considered healthy and will get you the best offers. Below 80 percent is still sellable, but the payout is usually lower.
Does battery health affect resale value? Yes. A higher Maximum Capacity means a better payout, because the buyer gets more usable battery life.
Can I check battery health on an iPad? Yes, on iPadOS 17.4 and later. Go to Settings > Battery > Battery Health.