手機總是很快沒電 送你一些省電妙招5

7. 偶爾校準電池就夠了

7. Calibrate only occasionally.

多年來，使用充電電池的設備都需要“調整”或“校準”，這個步驟可以防止電池忘記自己實際上有多大充電電量。如今的智能手機電池已經沒有這個問題了。

For many years, devices that used rechargeable batteries required “conditioning” or “calibrating,” a procedure that prevented the battery from forgetting how much capacity it actually had. Today’s smartphone batteries no longer suffer from this issue.

然而有可能發生的問題是，手機會不去追蹤電池的充電量：隨着使用與充電，所有電池都會漸漸損失充電量，手機軟件並不總能計算出這種充電量的變化。每隔幾個月給手機充滿電，一直使用到電池耗盡，你的手機軟件就可以檢測出電池當前的充電量，讓手機更好地估計手機還剩多少使用時間。換言之。電池的壽命不是永久的，但是手機的電池測量系統是可以更準確的。如果你發現你的手機顯示還有80%電量，但是一會兒就用完了，你可能需要嘗試這個步驟。

What can happen, however, is that the phone itself loses track of how much capacity its battery has: Every battery gradually loses capacity over time as you use and recharge it, and the phone’s software isn’t always good at accounting for this capacity change. By periodically (once every couple of months) fully charging the phone and then using it until it dies, your phone’s software will determine the battery’s current capacity and thus let the phone better estimate how long it will last on a charge. In other words, the battery won’t last any longer, but the phone’s battery meter will be more accurate. If you find that your phone claims you have 80 percent of a charge left, but it dies a few hours later, you should try this procedure.

如果這些都沒用……

If all else fails …

如果上面這些辦法你都試過了，每天的電量還是不夠，那就多買一塊電池吧。你可以買內置式電池，也可以買充電寶，這樣一天到了最後電池還能多用幾個小時，甚至還能把電池充滿呢。

If you have tried all the above and still struggle to get through the day with your battery, consider buying an external battery. These accessories — which can take the form of a bulky case with a built-in battery that you wear on the phone, or a separate battery pack that connects to your phone with a cable — can provide power to last an additional few hours at the end of the day, or even to fully charge your phone’s battery.

Wirecutter測試了100多種充電寶，爲手機充電幾十小時，選出了幾個最佳品牌。iPhone 6和6s的最佳充電寶是Anker的超薄手機充電外殼，它可以給完全沒電的iPhone手機充滿電，也就是說把電池的使用時間延長了一倍。對於比較大的iPhone手機――6 Plus和6s Plus――Wirecutter推薦Tylt的分離式充電手機殼(Energi Sliding Power Case)，因爲這種手機殼是分體設計的，樣子很好看。

The Wirecutter tested more than 100 external batteries for dozens of hours to pick a few favorites. Its favorite battery case for the iPhone 6 and 6s is Anker’s Ultra Slim Extended Battery Case, which has enough power to fully charge a dead iPhone and then some, more than doubling the phone’s battery life. For larger iPhones — the 6 Plus and 6s Plus — the Wirecutter prefers Tylt’s Energi Sliding Power Case because the case’s two-piece design makes it appealing.

至於安卓手機，充電寶是最佳選擇。帶有小型USB線纜的AmazonBasics Portable Power Bank充電寶提供2000毫安電量，是Wirecutter測試的最佳充電寶，可以和手機一起放入口袋，價格還不到10美元。最適合iPhone的充電寶是29美元的TravelCard，它幾乎可以放進錢包裏，帶有內置式Lightning接口線纜，可以給手機充電。

For Android phones, an external battery pack is a good option. The AmazonBasics Portable Power Bank with Micro USB Cable 2,000 mAh is the best pack the Wirecutter tested that will fit in your pocket with your phone, and it’s less than $10. A great battery pack for the iPhone is the $29 TravelCard, which is almost thin enough to fit in a wallet — with a built-in Lightning-connector cable to charge your phone.

如果要用好幾天，如果你需要重複給手機充電，或者有一個大的平板電腦和一個手機出差，Wirecutter推薦Anker PowerCore 15600。它能存儲足夠電量，爲一部普通智能手機充電5次，爲iPad Air之類大型平板充電兩次，價錢低於40美元。

For days of smartphone power, the Anker PowerCore 15600 is the Wirecutter’s pick if you need to charge a phone repeatedly or keep a full-size tablet and phone topped up through a busy week. It has enough available power to charge a typical smartphone five times or to fill a large tablet such as an iPad Air almost twice — for under $40.

在迪斯尼樂園度過了焦慮的一天之後，特米納買了一個Amazon充電寶。她說，這個充電寶可以給她的手機充電六次，但是太大了，所以並不理想。最後，她還是希望她的iPhone手機能有個好點兒的電池。

After her stressful day at Disneyland, Ms. Temeña bought an external Amazon battery pack. She said the pack could fully charge her phone six times, but it wasn’t ideal because of its bulk. Ultimately, she wishes her iPhone had a better battery.

“我不明白，現在手機都那麼先進了，電池爲什麼就是跟不上呢，”她說。

“I don’t understand why a battery wouldn’t be able to keep up with all the other advances they’re putting into phones now,” she said.