By what criteria do you judge a smartphone? Camera specs? Processing power? Water resistance, perhaps? For many people, the battery life is the single most important consideration. Even in 2015, if a device lasts more than a day before running out of juice, it is doing well. All the devices in this list pass that test with flying colors, so scroll on down to see our picks for the Android smartphones with the best battery life.
HTC One M9
At 2840mAh, the HTC One M9 battery is only marginally bigger than that in the HTC One M8. You'd think this would be a problem considering the One M9 is running a powerful Snapdragon 810 octa-core chipset. However, the big.LITTLE technology in the processor has paid off, as the One M9 battery manages to just outperform that of its predecessor.
Under extreme duress, like constant video-watching, the One M9 battery lasts around 13 hours, which is a decent run. However, no one in their right mind would watch a video for 13 hours straight (if you do, remember to take regular breaks), and ordinary users can expect well over a day's use out of it before needing to recharge. Another big plus with the One M9 battery is the quick-charging feature, which charges your battery around 40 percent in just half an hour (annoyingly, the fast-charging cable is not included in the box).
| Battery Capacity | 2840 mAh |
| Camera | 4 MP UltraPixel (front) / 20 MP (rear) |
| Display | 5.0-inch IPS LCD, 1920 x 1080 pixels (441 ppi) |
| CPU | Snapdragon 810, octa-core |
| RAM |
3 GB
|
| Android version | 5.0 Lollipop |
| Rate | Around 600 USD unlocked on Amazon |
OnePlus One
There are plenty of things to like about the OnePlus One - its rebellious Cyanogen OS (and now also OxygenOS), its big screen, low asking price, and of course its powerful 3100mAh battery. With its Snapdragon 801 quad-core chipset, big display and 3GB RAM, there's a fair old bit to keep powered in the OnePlus One too.
The OnePlus One battery handles over 13 hours of heavy usage, including constantly-on internet, regular phone calls and some video-viewing. For a moderate user, this converts to about one and a half day's use.
| Battery Capacity | 3100 mAh |
| Camera | 5 MP (front) / 13 MP (rear) |
| Display | 5.5-inch LCD, 1920 x 1080 pixels (401 ppi) |
| CPU | Snapdragon 801, quad-core |
| RAM |
3 GB
|
| Android version | 5.0 Lollipop/Cyanogen OS |
| Rate | Around 400 USD unlocked on Amazon |
Samsung Galaxy Note 4
The Galaxy Note 4 remains one of the best phones money can buy, largely thanks to its fantastic camera, big and bright 5.7-inch QHD screen, and S-Pen stylus features that make it truly unique among phones and phablets.
All these impressive features run smoothly thanks to the Note 4's Exynos 5433octa-core chipset, which is in turn kept alive by a 3220mAh battery. If you're a moderate to heavy smartphone user, then you should have around 30 percent battery remaining by the end of the day, and it should see you several hours into the next day as well. The Note 4 also comes with a fast-charging feature, which can charge up to half your battery within about 30 minutes.
We're just disappointed that Samsung failed to follow the Note 4's great battery performance through to the otherwise brilliant Galaxy S6.
| Battery Capacity | 3220 mAh |
| Camera | 3.7 MP UltraPixel (front) / 16 MP (rear) |
| Display | 5.7-inch Super AMOLED, 2560 x 1440 pixels (515 ppi) |
| CPU | Exynos 5433, octa-core |
| RAM |
3 GB
|
| Android version | 5.0 Lollipop |
| Rate | Around 570 USD unlocked on Amazon |
LG G3
The LG G3 is one of the best smartphones for battery performance when considering specs. The battery has a 3,000 mAh capacity, powering a 5.5-inch QHD LCD screen, a Snapdragon 801 processor and 3GB of RAM. With these innards, the LG G3 is considered a high performing device, but thankfully LG has done a great job optimizing its hardware to ensure the battery lasts.
The device is able to last around 2 working days if you aren't running any particularly demanding apps, or playing games, a figure which is difficult to reach on devices with even lower specs. Of course, given the large display, it’s likely you will want to watch movies and play games in HD, and this will reduce the battery life to less than a day. Compared to the competition, however, the LG G3 is fantastic.
| Battery Capacity | 3000 mAh |
| Camera | 2.1 MP (front) / 13 MP (rear) |
| Display | 5.5-inch LCD, 2560 x 1440 pixels (534 ppi) |
| CPU | Snapdragon 801, quad-core |
| RAM |
3 GB
|
| Android version | 4.4.2 KitKat |
| Rate | 453.99 USD unlocked on Amazon |
HTC One (M8)
There are a number of supporters in the Android universe of the HTC One M8, and for many this is due to its laudable battery life. While it doesn't reach the level of the LG G3, and has lower specs, overall the HTC One (M8) is still one of the better devices on Android for battery performance.
The 2,600 mAh battery powers a 5-inch Full-HD display and Snapdragon 801 processor. This Snapdragon processor has received a small, but significant, improvement over the previous version in terms of power consumption, and this is one of the keys to improving battery life. During normal use, you will easily find the HTC One (M8) lasting more than a day.
| Battery | 2600 mAh |
| Camera | 5 MP (front) / 4 MP (Ultrapixel) (back) |
| Display | 5-inch LCD, 1920 x 1080 pixels (441 ppi) |
| CPU | 801 quad-core Snapdragon |
| RAM | 2 GB |
| Android version | 4.4.2 KitKat |
| Rate | Around 470 USD unlocked on Amazon |
Samsung Galaxy S5
The Samsung Galaxy S5 is strong performer in a number of areas, not least in the battery department. For a start, the Galaxy S5 battery is removable, unlike some of the others on our list, meaning you can carry around a spare and swap them if necessary.
Another interesting aspect of the Galaxy S5's 5.1-inch Super AMOLED display, which has the advantage of consuming less battery than competing displays. Finally, the Galaxy S5 comes with a number of unique to Samsung power saving modes like Ultra Power Saving which can help add precious hours, or even days, to the Galaxy S5 battery. Samsung even pulled a publicity stunt with a week-long, cross country road trip on a single charge.
| Battery Capacity | 2800 mAh |
| Camera | 2.1 MP (front) / 16 MP (rear) |
| Display | 5.1-inch AMOLED, 1920 x 1080 pixels (432 ppi) |
| CPU | 801 quad-core Snapdragon |
| RAM | 2 GB |
| Android version | 4.4.2 KitKat |
| Rate | Around 400 USD on Amazon |
Sony Xperia Z3
The Sony Xperia Z3 has a battery capacity of 3,000 mAh, curiously lower than that of the olderXperia Z2. The key, however, is in how Sony has optimized the Xperia Z3's hardware. The Xperia Z3 is another smartphone in the 2-day battery life camp, often capable of hitting this benchmark with juice left in the tank. Unfortunately, Sony's omnibalance design means that, although the Xperia Z3 is water resistant, its battery is not removable. We also can't comment on how the Xperia Z3 battery will perform with the PS4 Remote Play feature. Nonetheless, it's still one of the best performing batteries for specs it houses, with 3 GB of RAM, Snapdragon 801 processor, and 5.2-inch full-HD screen.
| Battery Capacity | 3100 mAh |
| Camera | 2.2 MP (front) / 20.7 MP (back) |
| Display | 5.2-inch AMOLED, 1920 x 1080 pixels (424 ppi) |
| CPU | 801 Snapdragon quad-core (2.5GHz) |
| RAM |
3 GB
|
| Android version | 4.4.4 KitKat |
| Rate | Around 500 USD unlocked on Amazon |
Huawei Ascend Mate 7
The Huawei Ascend Mate 7 has one of the largest batteries on the market at a huge 4,100 mAh! The giant battery is necessary, though, to power this Chinese phablet's mammoth 6-inch Full-HD screen and octa-core Hisilicon Kirin 925 processor. Despite the big specs, the device will last for about two days with normal use if it is helped along by its power-saving modes (Smart or Ultra). Of course, we have yet to test the 6-inch Nexus 6 to see how that compares yet, but as it stands the Ascend Mate 7 is one of best devices for battery efficiency on Android.
| Battery Capacity | 4100 mAh |
| Camera | 3MP (front) / 13MP (rear) |
| Display | 6-inch LCD, 1920 x 1080 pixels (367 ppi) |
| CPU | Hisilicon Kirin 925, 1.8 GHz |
| RAM |
3 GB (32 GB model of memory) / 2 GB (16 GB model of memory)
|
| Android version | 4.4.4 - KitKat |
| Prices | Around 475 USD off-contract on Amazon |
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