iPhone battery replacement: when is it time and what does it cost?
An iPhone that's dead by midday almost always means a worn-out battery. Here's how to check your battery health and know when replacement is worth it.
Door The Phone Shopper
Gepubliceerd: 2026-07-10
Few things are as frustrating as an iPhone that's already in the red by early afternoon when it was fully charged that morning. In most cases, it's not your usage habits to blame — it's simply a battery that's worn out. The good news: replacing a battery is a relatively straightforward procedure that can make your device feel brand new again. In this article, you'll learn how to check your battery health, when replacement makes sense, and what to expect.
How to check your battery health
Your iPhone keeps precise track of how healthy your battery still is. You'll find this under Settings > Battery > Battery Health & Charging. There you'll see a percentage next to 'Maximum Capacity'. This figure shows how much of the original capacity remains. A new battery starts at 100% and slowly declines as your device ages.
Under that same menu, a message may appear saying the battery needs servicing. If that message shows up, your iPhone is essentially confirming that replacement is a smart move.
When is replacement really necessary?
As a rule of thumb: once maximum capacity drops below 80 to 85%, you'll feel it in everyday use. Your device won't last as long, and it may shut down unexpectedly or feel sluggish because your phone is throttling itself to protect the battery. These are clear warning signs.
Also watch out for the following:
- You need to top up your iPhone halfway through the day when you never used to.
- The device shuts off at a battery percentage that still seems fairly high — 20 or 30%, for example.
- The phone gets noticeably warm or the percentage jumps around erratically.
- The back panel or screen starts to bulge slightly. Stop using it immediately if this happens — it could indicate a swollen battery.
If you recognise one or more of these signs, a new battery is almost always the most cost-effective way to give your device years of life again. Buying a new iPhone is rarely necessary when the battery is the only problem.
What does a battery replacement cost?
The cost depends on which iPhone model you have. Newer devices use a different battery and construction than older ones, and that's reflected in the price. Rather than quoting a figure here that may not apply to your specific model, we'd rather point you to our up-to-date pricing per device.
On our you'll find the price that matches your specific model. If you have an iPhone 13, for example, head straight to for the exact rate. That way you know exactly what to expect upfront — no surprises afterwards.
DIY or leave it to the professionals?
Kits are available online to replace your battery yourself, and for the handy do-it-yourselfer that can be tempting. We still advise against it for most people, and for good reason.
- It's precision work. Opening an iPhone requires the right tools and a steady hand. The battery is glued in place and the cables are fragile. One wrong move can easily damage something else.
- The quality of third-party parts varies enormously. A cheap battery from an unknown source often doesn't last as long or performs below par. We work with quality parts. If you do want to tackle it yourself, check our Apple parts for reliable components.
- Water resistance. Opening your device breaks the original seal. If it isn't restored properly, your iPhone becomes more vulnerable to moisture.
When you let us handle it, we use quality parts, reseal the device properly, and you get to test your phone before you walk out the door. In most cases, it's ready the same day.
How to keep your new battery in good shape longer
After replacement, your iPhone will feel like new again. To make that last as long as possible, a few simple habits go a long way. Try not to let your device run down to 0% regularly, and keep it away from heat — warmth is the biggest enemy of any battery. Avoid leaving your phone in a hot car. And don't worry about charging daily; modern batteries are built for it.
In short
Check your battery health in Settings. If it drops below 80 to 85%, or you notice your device simply can't keep up anymore, replacement is the smartest move. You'll find the cost per model on our repairs page. Not sure whether it's necessary? Feel free to stop by in Nijverdal. We'll take a look free of charge and give you an honest answer on whether replacement is worth it.
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