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A smartphone is only as good as its battery. After all, without any power, it’s just a good-looking brick. While most modern smartphones have decent battery life, here’s a list of the longest-lasting handsets today.

Naturally, you shouldn’t buy a phone purely for the battery life alone. So for this list, we’ve also taken into consideration the general performance of the device. And of course, you can always buy any of the top phones you like. The Samsung Galaxy S8 series, the LG G6, the OnePlus 5, and other flagship phones all have good battery life. In case you need more juice, you can also get one of the best power banks to extend the battery 6 Of The Best Backup Battery Packs To Extend Your Phone's Uptime 6 Of The Best Backup Battery Packs To Extend Your Phone's Uptime A battery pack is one of the best ways to charge your phone in an emergency. Here are a few portable power banks that might be just what you need. Read More .

But sometimes, all you want it is a phone that won’t run out of battery at inopportune moments. If that’s the case, get one of these long-lasting babies.

1. Lenovo P2 ($270)

Battery Capacity: 5100 mAh

lenovo p2

Every battery test out there has crowned the Lenovo P2 as the champion. The gargantuan battery and Qualcomm’s power-efficient Snapdragon 625 processor form the perfect combo to last for a long time.

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The P2 is generally a good phone, with good performance, 32 GB of internal memory, and 3 GB or 4 GB of RAM (depending on which model you choose). Even with the large 5.5-inch screen, the 5100 mAh battery will make sure you never run out of juice.

The Lenovo P2 also uses a proprietary quick charging technology, for which you need to use the Lenovo charger from the box. You won’t be able to use a standard QC-compliant quick charger What's a Quick Charger? Here's Why You Need One Now What's a Quick Charger? Here's Why You Need One Now Smartphones take less time to charge up these days and it's all thanks to a new technology called Quick Charge. If you don't have it yet, you'll want it soon. Read More .

Unfortunately, the phone isn’t available in the U.S., but you can get it in almost all other markets. U.S. residents will need to rely on international sites like AliExpress. If you are, remember our AliExpress purchasing tips 7 Tips to Buy Safely on AliExpress and Avoid Frauds or Scams 7 Tips to Buy Safely on AliExpress and Avoid Frauds or Scams Buying products online can be a minefield, and Chinese store AliExpress is no different. How does it protect buyers? Can you avoid frauds and scams? How does AliExpress handle disputes and refunds? Read More . And make sure it works on your network Why Your Next Android Smartphone Should be Chinese Why Your Next Android Smartphone Should be Chinese For years, Chinese smartphones have gotten a bad reputation, but here's why you should really consider getting one now. Read More . But for most American citizens, you are better off buying the Asus Zenfone 3 Zoom.

2. Asus Zenfone 3 Zoom ($300)

Battery Capacity: 5000 mAh

asus zenfone 3 zoom

The Asus Zenfone 3 Zoom has been earning plaudits as the longest-lasting phone in the U.S. today. And why shouldn’t it? Like the Lenovo P2, this is a 5000 mAh battery coupled with a Snapdragon 625 processor.

But despite a battery that easily lasts a day, that isn’t this phone’s claim to fame. The Zoom is among the few smartphones to offer optical zoom (and not digital), with two lenses that focus at different ranges. And it can also shoot images in the RAW format RAW Files: Why You Should Be Using Them for Your Photos RAW Files: Why You Should Be Using Them for Your Photos Almost every article featuring advice for people just learning photography stresses one thing: shoot RAW images. Here's why that's good advice. Read More if you want.

ASUS Zenfone 3 Zoom ZE553KL-S625-3G32G-BK , 5.5” LTE Unlocked Phone, Dual SIM, Dual Rear Camera , 32GB, Navy Black (U.S Warranty) ASUS Zenfone 3 Zoom ZE553KL-S625-3G32G-BK , 5.5” LTE Unlocked Phone, Dual SIM, Dual Rear Camera , 32GB, Navy Black (U.S Warranty) 5.5-Inch unlocked Dual SIM smartphone with AMOLED Gorilla Glass 5 display, 1920 X 1080 FHD resolution; Android Nougat 7.1.1 Buy Now At Amazon

A few reviewers and users have noted that the Zenfone’s custom Android skin, Asus ZenUI 5.0, is a pain. It stutters and lags often, so you might want to replace it soon. Heck, you can get the stock Android experience without root Get the Stock Android Experience on Any Phone Without Root Get the Stock Android Experience on Any Phone Without Root A lot of Android devices have very customized interfaces, but you can get a stock Android look without even rooting your device! Read More too.

3. Samsung Galaxy A9 Pro ($350 w/o Warranty)

Battery Capacity: 5000 mAh

If you want great battery life and the assurance of the Samsung brand name, look no further than the Galaxy A9 Pro. It might be a year old, but it’s still the company’s longest-lasting battery.

The large battery is a necessity given the humongous 6-inch screen it sports. And there’s the fantastic Snapdragon 652 processor, which is great for gaming. You can enjoy playing on this phone’s large screen for many hours.

Samsung Galaxy A9 Pro A9100 32GB Gold, Dual SIM, 6.0", GSM Unlocked, International Model, No Warranty Samsung Galaxy A9 Pro A9100 32GB Gold, Dual SIM, 6.0", GSM Unlocked, International Model, No Warranty Samsung A9 pro A9100 (Chinese model) 32GB , Dual SIM. CPU Speed: 1.8GHz, 1.4GHz, CPU Type: Octa-Core, Display: Size (Main Display) 6.0" (151.9mm), Resolution (Main Display): 1920 x 1080 (FHD), Technology (Main Display): Super AMOLED, Color Depth (Main Display) 16M, Camera: Video Recording Resolution: FHD (1920 x 1080)@30fps, Main Camera - Resolution: CMOS 16.0 MP, Main Camera - f Number f/1.9, Front Camera - Resolution: CMOS 8.0 MP, Front Camera - f Number f/1.9. Buy Now At Amazon $353.98

Most people aren’t fans of Samsung’s TouchWiz interface, and we even suggest that you replace Samsung apps with better alternatives Replace Samsung Apps With These Better Alternatives Replace Samsung Apps With These Better Alternatives Whether you have a Samsung device and want to avoid the built-in apps, or you just want some of those cool Samsung features, these are apps you should check out. Read More . But in the case of the Galaxy A9 Pro, Samsung has done a good job of optimizing the software for best battery performance, so don’t mess with it too much.

4. Blu Studio XL 2 ($128)

Battery Capacity: 4900 mAh

blu studio xl 2

As usual, the smart buy for Americans on a budget comes from Blu. The Blu Studio XL 2 ticks all the right boxes in offering a long-lasting battery and a decent overall phone experience.

It has a huge 6-inch screen, 16 GB of internal memory, 2 GB of RAM, 13 MP camera, and a quad-core MediaTek processor. There’s nothing to rave about or complain about.

But with those specifications, the large 4900 mAh battery will last you a long time — probably much more so than other phones with same sized batteries.

BLU Studio XL 2 - 6.0" 4G LTE GSM Unlocked Smartphone - 4,900mAh Battery -Gold BLU Studio XL 2 - 6.0" 4G LTE GSM Unlocked Smartphone - 4,900mAh Battery -Gold Unlocked Dual Sim Smartphone, Android v6.0 Marshmallow Buy Now At Amazon $128.35

Unfortunately, there isn’t any quick charging tech available here, so filling up that large battery will take some time. You might want to check some tips to increase battery charging speeds 4 Tips To Increase Smartphone Charging Speeds 4 Tips To Increase Smartphone Charging Speeds Faced with a low battery warning right before you need to leave? These neat tricks can help you charge your smartphone faster than usual so you aren't left with a brick in your hand. Read More .

Notable Upcoming Phones

The list here includes those phones that have plenty of real-world buyer reviews How to Know If You Can Trust an Amazon Product's Reviews How to Know If You Can Trust an Amazon Product's Reviews Amazon product reviews are hit or miss. Sometimes they're helpful, sometimes they're fake. Here's a tool you can use to check the integrity of a given product's reviews. Read More as well as tests by technology bloggers and journalists. A few phones haven’t got that treatment yet, but still seem like they might be worth keeping an eye out on when you make your decision.

Motorola E4 Plus

motorola e4 plus

The Motorola E4 Plus packs a mammoth 5000 mAh battery and an extremely power-efficient Snapdragon 427 processor. Add an HD screen and it promises to be an excellent budget buy.

Xiaomi Mi Max 2

Xiaomi’s first Mi Max bowled over everyone with its battery life. Mi Max 2 again has a 5300 mAh battery, and also a more power-efficient processor than its predecessor. The reviews have started rolling in, and it looks like this one is the longest-lasting phone from Xiaomi yet.

How Much Is Enough?

How many mAh do you look for in an Android smartphone’s battery life? Obviously, the bigger the better, but is there a minimum limit that you won’t go below?

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  1. Zhong
    August 4, 2017 at 1:24 pm

    I don't think what the manufacturer's stated hours of battery life should be taken literally as they probably aren't tested on an environment that most of us are into.

  2. vicn
    August 2, 2017 at 2:11 am

    You are kidding ???????

    No mention of my fab Oukitel K6000 Plus ?
    6080 mAh.
    No , not living in Guandong province , in the European Union .

    €186 including postage from German warehouse of Chinese company (no duty to be paid).
    Totally agree with the post regarding replaceable batteries.

  3. likefunbutnot
    August 1, 2017 at 10:54 pm

    Good phones have replaceable batteries. Water resistance is a cute trick, but I'd infinitely rather have the ability to swap one fully charged battery for another and I've made that a mandatory feature for any phone I've purchased. I like not having to worry that my phone's battery is of average capacity, because there's a spare in my car or my desk drawer for the day when I need one and would rather not be tethered to a power cord.

    I know handset manufacturers are happy to sell phones that don't have replaceable parts, but people who settle for a sealed battery deserve the phones that they get.

  4. Grant
    August 1, 2017 at 4:29 pm

    My Mi Max (original) is mad efficient and the battery makes a joke out of every other big screen android I've seen. It's true I don't use that much video but I can get 3 or 4 days routinely. wonderful phone all round!