iPhone connected to a charger but struggling to hold charge, indicating battery issues and the need for replacement.

5 Signs Your iPhone Needs a New Battery

If you've had your iPhone for over a year, chances are your iPhone battery may need replacing. Most iPhones retain up to 80% of their original battery capacity after around 500 full charge cycles. If you charge your device daily, or more than once a day, you’ll likely start to notice signs of wear.

While natural battery degradation is expected over time, there are some key signs your iPhone needs a new battery. At Imfixed, we specialise in iPhone battery replacement and we’re here to make the process simple, safe, and fast.

1. Swollen Battery or Screen Separation

If your iPhone battery has started to swell or outgrow its casing, it's time to act quickly. You might see symptoms such as:

  • A hazy white or lifted screen

  • A gap between the screen and the phone body

  • A spongy or soft screen feel

This can be dangerous. Swollen batteries are a hazard and should be disposed of safely by professionals. Never try to puncture or handle a swollen battery yourself. Instead, bring it to us at Imfixed so we can safely install a high-quality iPhone battery.

2. Sudden Shutdowns

If your iPhone shuts down out of nowhere, even when it shows some battery percentage left, it's a strong sign the battery is failing. This becomes especially common when using power-hungry apps or games. Don't wait for your phone to stop functioning entirely. Come to us at Imfixed for a quick and professional battery replacement.

3. Phone Only Works While Plugged In

Does your iPhone die as soon as it’s unplugged from the charger? That’s one of the most obvious signs that your battery no longer holds charge. If your phone only works while it’s charging, it’s time for a battery upgrade. Book your iPhone battery repair online with us today.

4. Overheating

iPhones naturally generate some heat, but if your phone becomes hot to the touch during light use or while idle, the battery could be the issue. While external factors like direct sunlight can affect temperature, persistent overheating without cause may point to a failing battery. Let our experts at Imfixed inspect and replace your battery safely.

5. Sluggish Performance and Lag

Apple’s iOS has built-in performance management features that reduce speed to prevent unexpected shutdowns on older batteries. If you’re noticing:

  • Lag while scrolling

  • Slower app launches

  • Dimmer screen

  • Lower speaker volume

  • Frame drops in games

…it might be time to check your iPhone’s battery health and consider a replacement.

How to Check Battery Health on iPhone

Apple introduced Battery Health settings in iOS 11.3. To check it:

  1. Open Settings

  2. Tap Battery

  3. Select Battery Health & Charging

Here, you’ll see the Maximum Capacity of your battery, which compares current capacity to when the battery was brand new. If your iPhone says it's supporting normal peak performance, you’re good for now. But if you see a message like:

"This iPhone has experienced an unexpected shutdown because the battery was unable to deliver the necessary peak power..."

…it means performance management is in effect, and a battery replacement is likely needed.

How to Make Your iPhone Battery Last Longer

While all batteries degrade over time, here are a few habits to help prolong their life:

  • Turn off Location Services when not in use

  • Disable Background App Refresh

  • Keep Auto-Brightness enabled

  • Use Airplane Mode in low-signal areas

Even with these tips, no battery lasts forever. When you’re ready for a reliable fix, trust our experienced technicians at Imfixed.

Why Choose Imfixed for Your iPhone Battery Replacement?

At Imfixed, we only use genuine, high-quality iPhone batteries and offer a 12 months warranty on replacements. Whether you're in Bolton, Manchester, or anywhere else in the UK, we've got you covered.

Too far from our shop? No problem. You can ship your device to us for repair. Book your repair through our website and let our team handle the rest.

👉 Visit us in-store or get in touch via info@imfixed.co.uk or 01204 520520 to schedule your iPhone battery replacement today.

Frequently Asked Questions

1. What if I live too far from your store?
You can book your repair online and ship your device to us from anywhere in the UK.

2. Do you repair iPads as well?
Yes, we handle repairs for iPhones, iPads, tablets, laptops, and more.

3. How long is the warranty?
You’ll receive 12 months warranty on most repairs.

4. Will I lose my data?
No, your data stays intact. However, we always recommend backing up just in case.

5. How much does it cost to repair my iPhone?
Pricing depends on the model. Get a quote on our website or contact us directly.

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