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How to check your iPhone, iPad, Apple Watch, and MacBook’s battery health

You can’t just swap out the battery, so your next best option is to learn more about your battery’s health.

iphone battery
Image: Unsplash

Apple’s been in the courtroom for several years now after the company was found to be slowing down older iPhones without the consent of the owners.

The company’s reasoning? The health of the batteries inside those iPhones had degraded to a point where running at full speed could trigger shutdowns or other issues.

That series of lawsuits has also led to Apple adding a very useful tool to its products, including the Battery Health feature.

The feature lets you see how well your battery is faring under your usage and also tells you if you can do things to improve the battery’s health or if you need to replace it.

That same tool is also coming to the Apple Watch, and macOS is getting some new stats pages for a more complete picture of your battery use, as well.

Here’s how to check the battery health of your iPhone, iPad, Apple Watch, and MacBook

It’s pretty simple to check the new inbuilt tools that Apple added, so you can keep an eye on your not-user-replaceable battery.

iPhone or iPad:

  1. Open the Settings app
  2. Scroll down to Battery and tap
  3. Tap on Battery Health
ios battery menu
Image: KnowTechie

You’ll see percentages detailing your battery’s health, plus suggestions if your battery is less than optimal

ios battery health
Image: KnowTechie

This last screen will also tell you if your battery has degraded to the level of needing a replacement. Just know that’ll cost around $80 if so.

Apple Watch:

You’ll need to be updated to WatchOS 7 to be able to check the battery health on your Apple Watch. So, until the public beta arrives, you’ll need to be using a developer account to access this currently. If you are, here’s how to check:

  1. Open the Settings app
  2. Scroll down until you see Battery, then tap on it
  3. Tap Battery Health

That’s it, you’ll now see a percentage indicating how healthy your battery is, and any advice you may need on how to improve it.


Apple added a Battery Health feature to macOS back in April, but macOS Big Sur (the next major update) brings even more battery tools. You’ll be able to see exactly which apps are draining your battery, both as a daily rundown or over the last ten days.

  1. Open System Preferences from the Apple logo at the top left of your screen
  2. Click on Battery

You’ll now see graphs of your Mac’s energy usage on the Usage History tab, along with a graph of Screen On Time, so you can match the two together. You can also check the battery health of your MacBook by going to System Preferences > Power Saver > Battery Health.

That’ll give you the health status, and an option about disabling Battery Health Management, which automatically adjusts performance and the maximum charge of your MacBook’s battery depending on your usage habits.

It’s pretty much the same system that’s in iOS, so it will be interesting to see how well it works when it hits my work laptop in the fall.

Optimized battery charging

ios battery settings page
Image: KnowTechie

While you were checking out your battery health on your iPhone, you probably saw a toggle for Optimized Battery Charging.

This handy setting learns your charging routine, then instead of fully charging your device, it’ll charge to 80% until before you usually pick it off the charger, when it will finish charging to 100%.

That puts less strain on your battery over time, hopefully resulting in a longer lifespan for your device.

What do you think? Plan on using these features to check on your iPhone’s battery health? Let us know down below in the comments or carry the discussion over to our Twitter or Facebook.

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Maker, meme-r, and unabashed geek with nearly half a decade of blogging experience at KnowTechie, SlashGear and XDA Developers. If it runs on electricity (or even if it doesn't), Joe probably has one around his office somewhere, with particular focus in gadgetry and handheld gaming. Shoot him an email at joe@knowtechie.com.

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