Yes, Apple Watch batteries can be replaced, but Apple does it for you — you cannot do it yourself

Apple Watch batteries are not user-replaceable. The device is sealed with adhesive, and opening it yourself will damage the watch and void any warranty. Apple replaces the battery through their repair service, which costs between $79 and $99 depending on your watch model, plus $6.95 shipping if you mail it in. The process takes about one to two weeks from the time Apple receives your watch.

The battery itself is a small lithium-ion cell glued to the watch's internal frame. Removing it requires heating tools, specialized prying instruments, and knowledge of where the adhesive seams are. Even if you succeed, reassembling the watch so it is waterproof again is nearly impossible without the right equipment. Third-party repair shops can do this work, but it costs roughly the same as Apple's service and carries the risk that the watch will not seal properly afterward.

Key Takeaways

  • Apple Watch batteries degrade over time and eventually hold less charge, but this is normal and does not mean the watch is broken.
  • Apple replaces batteries through mail-in or in-store service for $79 to $99, and the process takes one to two weeks.
  • Third-party repair shops can replace the battery for similar cost, but the watch may not be waterproof afterward if the seal is not perfect.
  • If your watch is still under warranty or covered by AppleCare+, battery replacement may be free or cost only $29.

How to know when your Apple Watch battery needs replacement

A healthy Apple Watch battery holds a full charge for about 18 hours of typical use. After two to three years, you may notice the battery drains faster — it might only last 12 hours, or 8 hours if you use GPS frequently. This is normal wear. Lithium-ion batteries lose capacity with every charge cycle, and there is no way to reverse this.

If your watch shuts down at 20 percent battery, or if it will not hold a charge for more than a few hours even after a full overnight charge, the battery is likely at the end of its life. At that point, replacement is the only real solution. Some people try "recalibrating" the battery by letting it fully drain and then charging it completely, but this does not restore capacity — it only resets the software's estimate of how much charge is left.

Getting your battery replaced through Apple

You have two options: mail your watch to Apple, or take it to an Apple Store if one is near you. For mail-in service, go to apple.com/support, select your watch model, and choose "Battery Service." Apple will send you a prepaid shipping label. You pack the watch (not the charger, just the watch) and drop it off. Apple receives it, replaces the battery, tests the watch, and ships it back. The whole process usually takes 5 to 10 business days once Apple has it in hand.

If you have an Apple Store nearby, you can walk in with your watch and ask about battery service. They may be able to do it the same day if they have the part in stock, or they may need to order it and have you come back in a few days. Call ahead to check wait times and whether they have your specific watch model in stock.

The cost is $79 for most models, $89 for the Ultra, and $99 for the Hermès edition. If your watch is still under the one-year limited warranty, battery replacement is free if the battery is defective (not just worn out). If you have AppleCare+ for your watch, battery service costs $29 instead of the full price.

What AppleCare+ covers for battery issues

AppleCare+ is Apple's extended warranty and protection plan. For Apple Watch, it costs $79 upfront (or about $4 per month) and covers accidental damage, hardware failures, and battery service. If you have AppleCare+, you pay $29 for a battery replacement instead of $79 to $99.

AppleCare+ covers two accidental damage incidents per year, each with a $79 deductible. It also covers battery service if the battery capacity drops below 80 percent of its original capacity — which is Apple's definition of a battery defect. Without AppleCare+, you pay full price for battery replacement even if the battery is defective.

AppleCare+ lasts two years from the date you buy it. After that, you pay full price for any service. You can check whether you have AppleCare+ by opening the Watch app on your iPhone, tapping the My Watch tab, scrolling to the bottom, and looking for "AppleCare+ Status."

Third-party repair shops and what to expect

Independent repair shops like iFixit, uBreakiFix, and local phone repair stores can replace Apple Watch batteries. The cost is usually $60 to $100, similar to Apple's price. The main difference is speed — some shops can do it the same day — and convenience if you do not have an Apple Store nearby.

The risk is that the watch may not be waterproof after the repair. Apple Watch is rated water-resistant to 50 meters (or 100 meters for the Ultra), but this depends on a perfect seal. If a third-party shop does not explore the adhesive correctly or does not have the exact gasket for your model, water can seep in and damage the electronics. Apple's service includes a waterproof test before they ship the watch back. Many third-party shops do not have this equipment.

Before you choose a third-party shop, ask whether they test the watch for water resistance after the repair, and whether they warranty the seal. If they cannot answer yes to both, the risk is higher.

Extending battery life before you need a replacement

You cannot stop a battery from aging, but you can slow it down. Lithium-ion batteries degrade faster when they are kept at high temperatures or charged to 100 percent constantly. A few habits help:

  • Charge your watch to 80 percent most of the time, and only charge to 100 percent when you need the full day of battery.
  • Keep your watch out of direct sunlight and away from heat sources when it is not on your wrist.
  • Turn off features you do not use, like always-on display, GPS, or cellular, because they drain the battery faster and generate heat.
  • Update to the latest watchOS version, because Apple sometimes includes battery optimizations in software updates.

These steps will not prevent the battery from eventually needing replacement, but they can add six months to a year to its useful life.

What happens if you ignore a failing battery

If your Apple Watch battery is failing, you can keep using the watch — it will just need to be charged more often. There is no safety risk from a degraded battery. The watch will not catch fire or explode. It will straightforward shut down when the battery is empty, the same way your iPhone does.

The only real downside is inconvenience. If you rely on your watch for fitness tracking, notifications, or payments, a battery that only lasts 6 hours instead of 18 becomes frustrating. At that point, replacement makes sense. But there is no urgent reason to replace a battery just because it is a few years old and holding 70 percent of its original capacity.

Frequently Asked Questions

Can I replace the Apple Watch battery myself with a kit from Amazon?

You can buy battery replacement kits online, but opening the watch yourself will almost certainly damage it. The adhesive is strong, the internal components are fragile, and the tools in cheap kits are not precise enough. Even if you succeed, reassembling it so it is waterproof is extremely difficult. The cost of a kit ($20 to $40) is not worth the risk of a $300+ watch.

How long does an Apple Watch battery last before it needs replacing?

Most Apple Watch batteries remain usable for two to three years of daily charging. After that, capacity degrades noticeably. By year four or five, many people find the battery drains too quickly for their needs. This varies based on how often you charge, whether you use power-intensive features like GPS, and how hot the watch gets during use.

Will Apple replace the battery if my watch is out of warranty?

Yes. Apple replaces batteries for any Apple Watch, regardless of warranty status. You pay the full service fee ($79 to $99), but the service itself is available. This is different from hardware repairs, which may not be available for very old models.

Is it worth buying AppleCare+ just for battery replacement?

AppleCare+ costs $79 upfront and covers battery service at $29 instead of $79 to $99. If you plan to keep your watch for more than two years and expect to replace the battery once, AppleCare+ saves you money. If you only plan to use the watch for one year, it is not worth it. Consider whether you also want the accidental damage coverage, which is the main value of AppleCare+.

Can I trade in my Apple Watch instead of replacing the battery?

Apple offers trade-in credit for used watches, typically $50 to $150 depending on the model and condition. If your watch is several years old and the battery is failing, trading it in and buying a new watch might cost less than you expect. Compare the trade-in value plus the cost of a new watch against the cost of battery replacement plus keeping your current watch for another year or two.