About Optimised Battery Charging on your Apple Watch – Apple Support (MY) (2024)

FAQs

About Optimised Battery Charging on your Apple Watch – Apple Support (MY)? ›

Optimized Battery Charging is on by default when you set up your Apple Watch or after updating to watchOS 7 or later. When the feature is turned on, your watch delays charging past 80% in certain situations. In these situations, the watch's battery level remains between 75% and 80%.

I recommend using the optimized option. By limiting my iPhone's battery charge to 80% for two days, I've noticed that not only does my iPhone need to be charged more frequently than before, but the battery life also drops to 99%.

Therefore, we recommend the following: Do not fully charge or fully discharge your device's battery — charge it to around 50%. 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.

Turning off charging optimizations can increase wear on your battery and reduce its lifespan.

With iOS 13 and later, Optimized Battery Charging is designed to reduce the wear on your battery and improve its lifespan by reducing the time your iPhone spends fully charged. When the feature is enabled, your iPhone will delay charging past 80% in certain situations.

As a battery reaches its maximum capacity of 100%, its charging speed slows down, because the electrons coming in have to work harder to find space. If you stop at 80%, you're avoiding the slowest rate of charge right at the end.

According to the "40-80 Rule", lithium-ion batteries, like the ones inside iPhones, work best when they are between 40% and 80% of their capacity.

Can you charge the Apple Watch overnight? The short answer is yes. Apple itself acknowledges that you can charge the Apple Watch overnight. The device fast charges from 0-80%, but trickle charges between 80-100%.

To reduce battery aging, Apple Watch uses on-device machine learning to learn your daily charging routines so it can wait to finish charging past 80 percent until you need to use it.

All Apple Watches and iPhones are designed to be charged all night every night on the recommended charger. Unless you are prepared to turn them off for long term storage, "making them last" more than a day actually uses more charge and will shorten battery health.

Should I turn off optimized Battery Charging on my Apple Watch? ›

Optimized Charge Limit changes dynamically depending on how you use your Apple Watch. Based on your usage patterns, your watch might charge to 100% on some days, and less on others. Turning off Optimized Charge Limit can increase wear on your battery and reduce its lifespan.

Reduces Battery Wear:By limiting the amount of time your iPhone spends at 100% charge, Optimized Battery Charging reduces battery wear. Battery wear is an inevitable part of lithium-ion batteries, but this feature ensures that the wear and tear occur as slowly as possible.

The optimization setting is enabled by default. Disabling optimization may impact the device's battery life. Optimization may cause certain apps, such as Voicemail, My Verizon, and Gmail, to stop functioning.

For most customers, the battery in your iPhone should last the whole day. 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.

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.

You should use 80% Limit if...

You want to preserve the battery health of your iPhone, whether it be for longevity's sake or better resale value.

With iPhone 15 models, you can choose between Optimised Battery Charging, 80% Limit and None. When you choose 80% Limit, your iPhone will charge up to about 80 per cent and then stop charging.

User-initiated restrictions

Unrestricted: Allow all background work, which might consume more battery. Optimized (default): Optimize an app's ability to perform background work, based on how the user interacts with the app. Restricted: Fully prevents an app from running in the background. Apps may not work as expected.