FAQs
Turning off charging optimizations can increase wear on your battery and reduce its lifespan.
What happens if you leave an iPhone charging all night? ›
You can charge your iPhone every night even if the battery isn't fully depleted. iPhone automatically stops charging when the battery is fully charged, so it's safe to keep your iPhone connected to a charger overnight. Charging resumes automatically if your battery level drops below 95 percent.
How much should you charge your iPhone to maintain battery health? ›
Therefore, we recommend the following: Do not fully charge or fully discharge your device's battery — charge it to around 50 per cent. If you store a device when its battery is fully discharged, the battery could fall into a deep discharge state, which renders it incapable of holding a charge.
How do I fix my Apple battery health? ›
Battery health degraded
An Apple Authorized Service Provider can replace the battery to restore full performance and capacity.
Is it better to charge your iPhone to 80 or 100? ›
As the battery's useful life is measured in full charge cycles, with only a small contribution from chronological age, leaving the battery at 80% but still connected to power achieves 2 aims: Not leaving it at 100% for long periods of time, and reducing the number of full charge cycles while still powering the phone.
What happens if I turn off battery optimization? ›
Important: If you turn off battery optimization for an app, that app can run more while you're not using it, even when Adaptive Battery is on. This can use more battery than needed. Open your phone's Settings app.
Should I charge my iPhone to 100% for the first time? ›
You don't need to worry about this. Just plug your phone into the charger if it needs a charge, and when you need to take your phone somewhere again, unplug it. The iPhone knows when to stop charging and it does this when the meter hits 100%. Just leave it charging overnight and it will be full in the morning.
At what percentage should I charge my iPhone? ›
Apple recommends, as do many others, that you try to keep an iPhone battery between 30 and 80 percent charged. Topping up to 100 percent isn't optimal, although it won't necessarily damage your battery, but letting it regularly run down to 0 percent can prematurely lead to a battery's demise.
Is charging to 100% bad? ›
As with any electronic devices, you should follow the 80% rule. This is a general rule to not fully charge the battery or let it drain to 0%. This is because when it is at 100% the charger is constantly charging the battery since batteries will lose charge over time.
How many years does an iPhone battery last? ›
No matter what you do, your iPhone® battery has a limited shelf life. As it ages, the battery slows—so a full charge won't last as long. Most batteries are good for at least 2 to 3 years, often longer, but how do you know when to replace your iPhone battery? At Asurion, we help millions of people maximize their tech.
Depending on your device, you can:
- Let your screen turn off sooner.
- Reduce screen brightness.
- Set the brightness to change automatically.
- Turn off keyboard sounds or vibrations.
- Restrict apps with high battery use.
- Turn on adaptive battery.
- Delete unused accounts.
- Turn on dark theme.
Best Practices for Charging iPhones
To prolong your iPhone's battery lifespan, it's best to keep the charge between 20-80%. This range minimizes the stress on the battery, reducing wear and tear over time. Avoid letting the battery completely drain or fully charge regularly, as this can accelerate battery degradation.
What kills Apple battery health? ›
It's especially important to avoid exposing your device to ambient temperatures higher than 95° F (35° C), which can permanently damage battery capacity. That is, your battery won't power your device as long on a given charge. Charging the device in high ambient temperatures can damage it further.
How to make battery health 100% again in iPhone? ›
An iPhone battery will degrade with use. You can't get it back to 100%. You can expect a 1 - 2% drop each month. When the battery health gets to 80% or less, get a new battery.
How much does an iPhone battery cost? ›
iPhone battery replacement cost
| Battery Replacement Cost (Swappa Repair Network) | Battery Replacement Cost (Apple out-of-warranty) |
|---|
| iPhone 12 Pro Max | $98 | $89 |
| iPhone SE 2020 (2nd gen) | $62 | $69 |
| iPhone 11 | $84 | $89 |
| iPhone 11 Pro | $105 | $89 |
24 more rowsDec 18, 2023
Optimized Battery Charging: Prompts the iPhone to trickle charge up to 80% overnight and then tops up to 100% as you're about to wake up. 80% Limit: Caps the charging at 80%. Apple says the iPhone will occasionally charge to 100% in order to maintain a more accurate battery state-of-charge estimate.
Does only charging to 80 percent help? ›
There are two reasons: charging performance and battery longevity. Most of the time you should only charge an EV to 80% because charging rates slow down dramatically past the 80% mark. And two, the long-term health of your vehicle's battery pack is improved when kept below 100%.
How to increase iPhone battery health to 100%? ›
Tips to Extend iPhone Battery Life & Lifespan
- Avoid full charge or full drain.
- Don't charge overnight.
- Use a dimmer screen.
- Switch off location services.
- Turn on Optimized Battery Charging.
- Use an original or approved Apple charger.
- Close apps and unused features.
- Avoid extreme temperatures.
Apple considers any iPhone with a battery capacity of 80% or above to be in optimal condition. In fact, Apple feels so strongly about battery health that its 1-year warranty covers any battery at 80% capacity or more. It's not unusual to see iPhones that, after one year, still have a battery capacity of 95% or above.
