When should I change my iphone battery? Signs that it's time (and when not to!)
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When should I change the battery in my iPhone?
The battery is one of the most important components of the iPhone and its normal wear and tear directly affects the autonomy and performance of the device. If you're wondering when to change the battery on your iPhone and if it's worth replacing it, here you'll find clear answers, without technical hyperbole.
At ired we test iPhones every day that seem "tired", but with a simple battery change they come back to almost new levels. See which signs indicate it's time for a change, when it's not even necessary and how to make the right decision.
What affects iPhone battery life
Lithium-ion batteries wear out naturally over time. After about 500 charge cycles, an iPhone retains an average of 80% of its original capacity. Chemical aging gradually reduces autonomy and affects performance, especially in older models.
Signs that you need a battery change
- The iPhone suddenly turns off on 10-30%
- Very fast discharge with simple use
- Unnecessary overheating
- Slow charging or charging that does not complete
- Declining performance and "sticking points"
- Reduced volume
- Inflated battery (immediate replacement)
ℹ️ If you notice more than one of the above, battery replacement is almost certain.
How to check battery health (Battery Health)
You can see the health of the battery by:
Settings → Battery → Battery → Battery Health & Charging
The "Maximum Capacity" indicator shows how much charge the battery can hold compared to when it was new.
Read also: iPhone 12 radiation: What is really valid in Greece in 2025
When is the battery considered faulty?
When Battery Health drops below 80%, Apple considers the battery to be significantly degraded. At this stage, autonomy is significantly reduced and performance management is triggered.
When it's really worth changing your battery
Battery replacement has a meaningful effect when:
- charge your iPhone 2-3 times a day
- there are frequent shutdowns
- the device heats up easily
- the performance has dropped significantly
With a new battery, iPhone gets proper battery life and smooth operation again.
iPhone battery replacement cost in Greece
Battery replacement costs usually vary:
- 50€-80€ for older models
- 90€-130€ for newer iPhone
The final amount depends on the model and the quality of the spare part.
Why certified service matters
The use of quality battery and certified technicians for the iPhone repair ensures:
- correct performance
- Security
- maintaining waterproofing to the maximum possible
- longer life
Non-certified batteries pose risks of overheating and premature wear.
How to extend your battery life
- Keep charging between 20%-80%
- Avoid extreme temperatures
- Activate Optimized Charging
- Use MFi chargers
- Do regular iOS updates
Battery replacement & sustainability
Battery replacement can extend the life of an iPhone by up to 3 years, reducing e-waste and the cost of buying a new device.
Frequently asked questions (FAQ)
How long does it take to change the battery?
Usually 20-40 minutes.
Is waterproofing being lost?
With proper procedure, it is maintained at the maximum possible level.
Is it worth it instead of buying a new iPhone?
In most cases, yes.
Quick decision control
✔ Battery Health under 80%
✔ Frequent shutdowns
✔ Fast discharge
✔ Overheating
If they are valid, changing the battery is the right choice.
Restore your iPhone today
At ired, battery replacement is done quickly, with quality spare parts and certified technicians.
Get autonomy and performance back without changing your device.
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