英语小知识:充电智能手机的最佳方式

　　编者按：生活中有许多英语小知识是很实用的，手机是我们日常生活中必不可少的物品，一起来看一看英语小知识之充电智能手机的最佳方式吧。

　　An iPhone X charging wirelessly.Hollis Johnson

　　Do you know how to keep your smartphone's battery healthy?

　　Probably not. In fact, you may have been hastening the death of your phone's battery with your charging habits.

　　Charging to 100%, or overnight? Fully discharging before plugging in? These common practices can shorten the usable life of your battery, according to Cadex, a company that offers devices that test smartphone batteries, among others.

　　How to best extend the life of batteries has been a prime topic since Apple disclosed last month that it was slowing down iPhones with degraded batteries to prevent the devices from shutting down unexpectedly.

　　Cadex offers a lot of information on its Battery University website, including about lithium-ion batteries — the type that powers smartphones.

　　It turns out that if you want to delay having to replace your battery or buy a new phone, there are specific percentage levels within which you should keep your phone's battery.

　　Here's how to — and how not to — charge your phone.

　　The best way to charge your phone is a little at a time, whenever you have a chance.

　　flickr.com/wahamiltron

　　Just plug it in whenever you can, even if it's for a few minutes, and you'll be fine.

　　"Partial charges cause no harm," according to Battery University.

　　Don't fully discharge your phone before plugging it in.

　　Pixabay

　　Battery University says that so-called deep discharges — when you use your phone until only a small portion of its battery life is left — wear down batteries.

　　Samsung echoes that advice in a blog post offering tips on how to extend your phone's battery life.

　　Try to keep your battery's charge level between 65% and 75%.

　　Antonio Villas-Boas/Business Insider

　　According to Battery University, the lithium-ion battery in your smartphone will last longest if you keep it 65% to 75% charged at all times.

　　Clearly, it's impractical to always keep your phone charge between those levels — but at least you know what's ideal.

　　If you can't do that, shoot for keeping its charge level between 45% and 75%.

　　r. nial bradshaw/Flickr

　　The second-best charge range for batteries inside smartphones is 45% to 75% — probably a lot more realistic for most people on a day-to-day basis than 65% to 75%.

　　You could even develop a daily routine to plug in your phone at particular times to keep its charge within those levels.

　　But you have some wiggle room. If you typically keep your phone's charge level between 25% and 75%, you most likely won't cause too much long-term damage.

　　Never fully charge your battery — and particularly not from a low charge level.

　　Matt Cardy/Getty Images

　　Charging your phone's battery to 100% from a low 25% — or pretty much any amount — can reduce its capacity and shorten its lifespan.

　　According to Battery University, lithium-ion batteries do "not need to be fully charged, nor is it desirable to do so."

　　"In fact, it is better not to fully charge," it says, "because a high voltage stresses the battery" and wears it out in the long run.

　　You probably shouldn't charge your phone overnight.

　　Avery Hartmans/Business Insider

　　I've seen a lot of debate about the effects of charging your smartphone overnight.

　　But if charging to 100% causes the most damage to a phone battery's lifespan, you should probably cut it out.

　　And unplug your phone once it's charged.

　　公众号：英语学习

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