iphone battery

How to Know When Your iPhone Battery Needs to Be Replaced

If you've owned your iPhone for a time, you may have noticed that it doesn't last as long on a single charge as it did or has slowed down significantly. Does this sound familiar? It may be time to replace your iPhone battery. Apple has admitted that its lithium-ion batteries lose their capacity to hold a full charge over time. After 500 charge cycles, the battery capacity might reduce to 80% or less. At that time, your iPhone may deliberately slow down to protect your ageing battery from dying.

Read on to learn how to know when your iPhone battery needs to be replaced, what happens when your iPhone battery health is low and tips on how to extend your iPhone battery's lifespan.

How to Know if Your iPhone Battery Needs to Be Replaced

The optimum time to replace your iPhone's battery is when you discover it isn't holding enough juice to get you through the day. In other words, if the charge your iPhone maintains is insufficient for your needs or renders the gadget inoperable, replace the battery.

Replace the battery when the battery life irritates you enough to convince you that a new battery is essential. For most users, an 80 percent battery health level should be sufficient to carry them through the day.

However, after 40 or 50 percent battery health, things begin to degrade very quickly. Once you drop below 40 percent of battery health, it's time to get a new battery. Basically, your iPhone becomes pretty much unusable.

What Happens When Your iPhone Battery Health is Low?

When your iPhone's battery gets low, it may throttle your smartphone's performance to prevent it from burning out. When the battery is far too low, your iPhone will shut down all non-essential processes to save power, then shut down.

When you plug in an iPhone whose power is low, the phone may reboot. If you unplug your iPhone and its battery is only at 40 per cent or 50 per cent, you'll see the "low battery" warning appear. Once your battery hits 20 per cent, you'll see a warning that your phone will shutdown soon.

How to Extend Your iPhone Battery's Lifespan

Apple offers some tips to maximise the lifespan of your iPhone's battery:

  • Don't let your iPhone die completely
  • Don't charge your iPhone to 100 per cent
  • Use your iPhone and let it discharge before recharging again
  • Don't leave your iPhone in hot areas for long periods
  • Don't leave your iPhone in cold areas for long periods
  • Try not to perform hard shutdowns. This can harm the battery.
  • Keep your iPhone at room temperature. Too hot or too cold can reduce the lifespan of your battery.

How to Replace an iPhone Battery

If you've discovered that your iPhone battery isn't holding a charge, or you'd just like to get a new one, it's pretty easy to order a new one and replace it yourself.

Order a new iPhone battery from Apple. The battery is $79, but if you've got Apple Care, it's $29. To order a new battery, go to the Apple website and look under iPhone Repair.


If you're getting tired of your iPhone slowdown, or your battery won't hold a charge, it's time to purchase a new iPhone battery. Replacing an iPhone battery is pretty simple, and you'll feel like a new person after you replace your old battery.

At Appdroid, you can get fast and reliable phone screen repair. Whether you need a cracked mobile screen repair or a phone battery replacement, our smartphone repair specialists can fix them all for you. We only use the best quality spare parts in the U.K. to ensure your satisfaction. Every phone repair service comes with a free lifetime warranty. Simply book an appointment with us to get started!

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