Why charge for 24 hours

To understand how your battery works so you can get the most out of it, see the Apple Lithium-ion Batteries website. The battery icon in the top-right corner shows the battery level or charging status. If iPhone is very low on power, it may display an image of a nearly depleted battery, indicating that it needs to charge for up to 10 minutes before you can use it.

If iPhone is extremely low on power when you begin to charge it, the display may be blank for up to 2 minutes before the low-battery image appears. Connect iPhone to a power outlet using the charging cable included and an Apple USB power adapter sold separately.

Read more: 5 ways to conserve battery life on your iPhone, and get the most out of a single charge. It's hard to say how quickly overnight charging actually accelerates the aging process of the lithium-ion batteries in our smartphones.

It may not produce any noticeable effects if you buy a new phone every year, or maybe even every two years. But if you typically buy a new phone because yours is dying too quickly — and isn't that old — you might want to reevaluate how you've been charging your phones.

An overnight charge might not be considered such a long time, but the damage could build up the longer you keep your smartphone. If you're an overnight charger and plan to keep your phone for several years, it might be time to ditch that behavior.

But remember, all lithium-ion batteries die. You can be the most cautious phone charger in the world and your phone's battery life will still degrade, albeit slower. All in all, don't stress. If you can charge your phone in the morning instead of overnight, great. It can be worthwhile to see whether changing your charging habit can have a positive effect on your phone battery's lifespan.

Perhaps the best thing to know is that many phone makers give you the option to replace your battery for a fraction of the price of buying a new model. The end result—manufacturers recommend you charge the battery before use.

Not all batteries are the same though. The lithium-ion batteries in our mobile phones have a pretty good self-discharge rate of around 2—3 per cent per month, and our lead-acid car batteries are also pretty reasonable—they tend to lose 4—6 per cent per month. Jul 13, PM in response to italiankid44 In response to italiankid44 1. You can't 'Overcharge' the iPhone. Once it is charged it stops. No you don't need to charge for 24 hours. Read the following for more info on iPhone batteries.

Reply Helpful Thread reply - more options Link to this Post. User profile for user: sandman sandman Jul 13, PM in response to italiankid44 In response to italiankid44 Lithium Ion batteries, used in the iPhone, do not work like NiCads of the past 1 More frequent charges. Fully discharging the battery will ruin it. These batteries work best when recharged more frequently 2 Charging your phone has no correlation to the capacity loss once the battery reaches its max charges.

Once a LIon battery exceeds its max recharge cycles, it may begin to slowly lose capacity.