large smartphone battery

It’s as if Thor himself swung his giant hammer and demanded ‘More Power… MORE… POWER…’ and the mobile manufacturers have answered…

With extreme battery life capable smartphones being created in dark underground labs where they all pray to the god of Milliamp Hours (mAh)… I thought it was about time that I let the cat out of the bag and share this complete list of battery-centric mobile devices.

Further Reading: Check out our Best Tough & Rugged Smartphone Article for some more Big Battery Smartphones.

Battery life in smartphones is still a hot topic and a has always been real pain-point for many a new phone owners. Nothing gets on your nerves more than a phone that constantly needs topping up throughout the day.

So with the hate of poor battery life firmly in my heart, I vow that all phones henceforth (in this article at least) have at least a 5000mAh battery. Don’t know your Milliamps from your Millipedes? More than 5000mAh is easily enough to see you through a full days use and even safely into day 2, if not day 3, without having to connect yourself to a power supply.

Check it out! – Here Are The Best Battery Life Ready Smartphones You Can Get Your Hands-On in 2018!

Motorola E4 Plus Smartphone

Moto E4 Plus 5000mAh

Even Lenovo has jumped on the big battery bandwagon and released a Plus version of their Moto E4. The Moto E4 plus comes with a bigger screen and reaches the 5000 mAh threshold to make it into this article.

Buying a bigger brand like the Moto comes with its Pros & Cons. The upside is that you get regular OS updates, more accessories and better support. The flip-side is that this comes at the expense of raw tech hardware and performance.

The Moto E4 Plus comes with a power efficient low-end Snapdragon processor and about the half the RAM we’re seeing on similarly priced smaller brands.

Quick Specs: Android 7.1.1 Nougat, Qualcomm Snapdragon 427 CPU, Adreno 308 GPU, 2GB RAM, 32GB Storage, 5.5″ 720×1280
Battery Life: 2-3 Days
Battery Capacity: 5000 mAh
Quick Charge: Yes (Rapid charger sold separately)
Weight: 181 grams

The Moto E4 Plus from… UK : £149 | EU : €130 | US : $150

UMiDigi S2 Pro

UMiDigi S2 Pro

The latest smartphone from UMiDigi is the S2 Pro which features an 18:9 Full HD+ Sharp Display, 128GB of storage and an amazing 6GB of RAM.

The S2 Pro offers an excellent screen-to-body-ratio but what’s more impressive is that they’ve stuffed a 5100mAh battery inside while keeping the weight of this 6 inch giant well under 200 grams.

While it may be hiding a mid-range MediaTek CPU, I’ll let the S2 Pro off the hook… Why? because you can get your hands on this smartphone for half that of the cheapest retail flagships.

The S2 is definitely a smartphone that should be on your shortlist if battery life is a concern! If you don’t mind missing out on a full HD display, you can always opt for the UMiDigi S2 (non-pro) version and save yourself some pennies!

Quick Specs: Android 7 Nougat, MediaTek Helio P25 (8-Core) CPU, ARM Mali-T880 GPU, 6GB RAM, 128GB Storage, 6 inch 18:9 Sharp Display, 2160×1080 resolution.
Battery Life: 2-3 Days
Battery Capacity: 5100 mAh
Quick Charge: Yes
Weight: 186 grams

The UMiDigi S2 Pro from… UK : £240 | EU : €275 | US : $320

Vernee X

The Vernee X doesn’t compromise. It’s available in two variants offering up to 6GB of RAM’s and 128GB’s of storage coupled with MediaTek’s next generation Helio P23 CPU. While not a powerhouse, it offers extreme mid-range efficiency.

This is then combined with a huge 6200mAh battery making it one of the best long lasting smartphones available.

You’re also getting a full HD+ 18:9 display that comes with curved corners, a metal unibody design and a quad camera setup. Thanks to high-resolution 13MP selfie camera, we’re also treated to Vernee’s face unlock feature.

Overall, the Vernee X is a great all rounder that’s packing some serious battery without weighing you down.

Quick Specs: Android 7.1 Nougat, MediaTek Helio P23 CPU, Mali-G71 GPU, 4/6GB RAM, 64/128GB Storage, 6″ 2160×1080 IPS Display
Battery Life: 2-3 Days
Battery Capacity: 6200 mAh (non-removable)
Quick Charge: Yes (USB Type-C | 9V/2amps)
Weight: 198 grams

This week’s Vernee X deals from… UK : £190 | EU : €210 | US : $250

Xiaomi Mi Max 2 big battery

Xiaomi Mi Max 2

The Xiaomi Mi Max is just that with a whopping 6.44″ Full-HD screen and a hefty 5300mAh battery to power the smartphone beast to the… drum roll… Max! Whilst you won’t be getting the same amount of battery life you would from a 5″ phone with 5000mAh it’ll still be enough to last you well into the 2nd day.

What’s so impressive about the Xiaomi Mi Max 2 is that it comes with a set of mid-high range hardware but is priced well below the current flagships! This combo of decent specs, enormous screen real-estate and big battery is definitely going to put the Mi Max 2 high up on people’s wishlist.

Whilst it might not have cutting edge bezels, it’s stylish yet minimal all metal design is going to be a big hit with anyone who’s wanted the Galaxy Note to look more like an iPhone!

Quick Specs: Android 7.1.1 Nougat, Qualcomm Snapdragon 625 2.0GHz CPU, Adreno 506 GPU, 4GB RAM, 64/128GB Storage (expandable +128GB), 6.44″ 1080×1920, 12MP Sony IMX386 Rear Camera
Battery Life: 2-3 Days
Battery Capacity: 5300mAh
Quick Charge: Yes (Qualcomm Quickcharge 3.0)
Weight: 210 grams

Note: Missing 4G Band 20 (800MHz) – Will my phone work in the UK?

Grab yourself a Xiaomi Mi Max 2 battery-life master from… UK : £190 | EU : €200 | US : $245

Ulefone Power 3 Battery Life

Ulefone Power 3

With a name like the Ulefone Power 3, you know what you’re getting… serious battery-life! The Power 3 doesn’t disappoint with a 6080mAh battery that’s backed up by 3amp quick charge.

It pulls in some big names for its component list, with Gorilla Glass 4 protection for the full HD+ display and a Samsung dual lens camera setup.

Ulefone have promised a definite upgrade to Android Oreo 8.1, but a date for this has yet to be set. Since it uses the the current generation Helio P23 chip, it’s an OS upgrade you’re very likely to see.

Quick Specs: Android 7.1 Nougat, MediaTek Helio P23 CPU, Mali-G71 GPU, 6GB RAM, 64GB Storage, 6″ 2160×1080
Battery Life: 2-3 Days
Battery Capacity: 6080 mAh
Quick Charge: Yes (Type-C | 5V/3Amps)
Weight: 210 grams

The Ulefone Power 3 start at… UK : £175 | EU : €200 | US : $240

Ulefone Power 3S

Ulefone Power 3S

If your budget won’t stretch to the 3, then the Ulefone Power 3S is a little more affordable. It still comes with the same full HD+ display, Android Oreo future update promise but drops down to 4GB of RAM and lowers its main camera to 16MP.

Surprisingly the 3S is packing a slightly bigger battery at 6350mAh and also includes the faster AC WiFi standard.

Apart from this though, you’re getting pretty much the same smartphone but you’ll pay around 20% less. Sounds like a deal to me.

Quick Specs: Android 7.1 Nougat (Oreo in development), MediaTek Helio P23 CPU, Mali-G71 GPU, 4GB RAM, 64GB Storage, 6″ 2160×1080
Battery Life: 2-3 Days
Battery Capacity: 6350 mAh
Quick Charge: Yes (Type-C | 5V/3Amps)
Weight: 210 grams

Ulefone Power 3S starts at… UK : £140 | EU : €160 | US : $190

Oukitel K6 Smartphone

Oukitel K6

Oukitel, the longtime kings of battery life, recently released their 2018 mid-range offering, the Oukitel K6. Featuring a 6300mAh battery, NFC and quad cameras it’s another great all rounder but sits on the hefty side at 215 grams and 10.4mm thick.

On paper, the Oukitel K6 sounds very familiar but what makes it stand out is the quad camera setup. Featuring a 21MP + 8MP rear camera and a 13MP + 8MP selfie camera the K6 is well equipped to take some great photography.

I’m currently testing the K6’s camera performance out as we speak, so I’ll add a link here to the full K6 Camera review soon. Finally, you won’t find a headphone jack but Oukitel have included a USB Type-C to AUX in the box.

Quick Specs: Android 7.1 Nougat, MediaTek Helio P23 CPU, Mali-G71 GPU, 6GB RAM, 64GB Storage, 6″ 2160×1080
Battery Life: 2-3 Days
Battery Capacity: 6300 mAh
Quick Charge: Yes (5V/3amps | Pump Express 3.0)
Weight: 215 grams

Check out the latest Oukitel K6 deals…

Vernee Thor E

Vernee Thor E – Small & Mighty!

Named after the God Thor himself, the Vernee Thor E packs an all mighty 5020mAh battery into an 8.2mm phone that weighs only 149grams. Now that’s impressive! No longer does more battery life mean more smartphone weight.

The Vernee Thor E also comes with a trick up its sleeve in the form of dedicated that puts the phone into E-Ink mode. There’s isn’t actually any e-ink involved, like the Yotaphone 2‘s second screen, but it puts the phone into super power save mode. Once you press the e-ink button; it lowers the brightness, underclocks the CPU & GPU, Optimises Apps & Notifications and finally turns the screen black and white.

In terms of raw performance, the Vernee Thor E planted firmly in the budget specs arena with low-end MediaTek CPU and 16GBs of storage. Don’t let this put you off though as it has a budget price-tag to match and comes with the latest Android OS 7 Nougat.

Quick Specs: Android 7 Nougat, MTK6753 1.3GHz 8-cores, Mali-720MP3 GPU, 3GB RAM, 16GB Storage (expandable 128GB), 5″ SHARP 1280×720, 16MP Rear Camera
Battery Life: 2-3 Days
Battery Capacity: 5020mAh
Quick Charge: Yes (2 Amp PE)
Weight: 149 grams

Vernee Thor E starts from… UK : £95 | EU : €99 | US : $118

Vernee Thor Plus Smartphone

Vernee Thor Plus – AMOLED Beast

At only 7.95mm thick with a battery size of 6200mAh, the Vernee Thor Plus is bucking the trend and showing that you can have it all.

It features an AMOLED 1280×720 display and front-facing fingerprint reader. While it’s not full-HD, it does come with a very affordable budget price-tag, even more so, when considering it has an aluminium alloy unibody design.

The Vernee Thor Plus looks very similar to a lot of other smartphones on the market… but… with a few worthwhile extras. The first being an AMOLED display which will improve contrast and extend battery life. The second is that it’s hiding a 6200mAh battery inside!

Quick Specs: Android 7 , MTK6753 1.3GHz 8-cores, Mali-720 MP3 GPU, 3GB RAM, 32GB Storage (expandable 256GB), 5.5 inch AMOLED 1280×720, 13MP Rear Camera, Dual-band WiFi.
Battery Life: 2-3 Days
Battery Capacity: 6200mAh
Quick Charge: Yes (2 Amp Fast Charge)
Weight: 189 grams

Vernee Thor Plus starts from… UK : £99+ | EU : €115+ | US : $130+

Doogee BL5000 Smartphone Blue

Doogee BL5000

We recently did a full review of the Doogee BL5000 and found it to be a capable device. It’s a good budget all-rounder that takes its design inspiration from HTC.

It comes well equipped with a bright full-HD screen, front facing fingerprint reader and plenty of storage. The device is on the heavy side at 210 grams but it fits the hand well and feels solid.

Don’t forget to check out our full in-depth Doogee BL5000 hands-on review.

Quick Specs: Android 7 Nougat (Doogee UI 1), MTK6750T 1.5GHz 8-cores, Mali-860 MP2 GPU, 4GB RAM, 64GB Storage, 5.5″ 1920×1080, Gorilla Glass 5, Dual 13MP Rear Cameras
Battery Life: 2-3 Days
Battery Capacity: 5050mAh
Quick Charge: Yes (2 Amp)
Weight: 210 grams

Doogee BL5000 starts from around… UK : £130 | EU : €135 | US : $155

Doogee BL7000 Smartphone

Doogee BL7000

Big brother to the BL5000, the Doogee BL7000 offers us a whopping 7060mAh of power that will easily see you into day three without charging.

What’s more impressive is that it only weighs 10 more grams than its little brother at 220 grams, but has 29% more battery capacity.

Performance-wise it’s very similar to the BL5000, but it does have an improved dual camera setup using Sony made camera lens and has opted for a Sharp branded Full-HD display. It’s worth noting that it drops the Gorilla Glass 5 protection.

It’s a much more discrete design with the faux leather textured battery cover adding plenty of grip. It’s not a design for everyone, but, to certain audiences, the traditional look does appeal.

Quick Specs: Android 7 Nougat (Doogee UI 1), MTK6750T 1.5GHz 8-cores, Mali-860 MP2 GPU, 4GB RAM, 64GB Storage, 5.5 inch Sharp 1920×1080, Dual 13MP Sony Rear Cameras
Battery Life: 3-4 Days
Battery Capacity: 7060mAh
Quick Charge: Yes (2 Amp)
Weight: 220 grams

Doogee BL7000 starts from around… UK : £120 | EU : €135 | US : $160

Doogee BL12000 Pro Smartphone

Doogee BL12000 Pro

Recently beating the Oukitel K10000 to become ‘King of the Battery-life Hill’ is the Doogee BL12000. It’s included here more for fun than as an actual recommendation, as, it’s, erm well… just plain ridiculous.

Weighing in at a whopping 313 grams and coming in at nearly 15mm thick, the Doogee beast isn’t the most pocket friendly smartphone out there. There becomes a point when you may as well just carry around a small powerbank…

Still, it’s great that Doogee is pushing boundaries… maybe with battery density improvements, we’ll start seeing similar phones with a slimmer form factor soon. Although, my bets are on the super-fast charging route, eventually getting rid of the need for big batteries altogether.

Quick Specs: Android 7.1 Nougat (Oreo in development), MediaTek Helio P23 CPU, Mali-G71 GPU, 6GB RAM, 128GB Storage, 6″ 2160×1080
Battery Life: 4-6 Days
Battery Capacity: 12000 mAh
Quick Charge: Yes (12V/3amps | Pump Express 3.0)
Weight: 313 grams

Own the Doogee BL12000 Pro Beast for only… UK : £199 | EU : €219 | US : $269

ASUS Zenfone 4 Max

ASUS Zenfone 4 Max

Asus has announced their latest big battery phone, the Zenfone 4 Max. It comes with a 5000mAh non-removable battery that Asus says is tested to 500 cycles. It can also reverse charge your other accessories using the included in the box OTG cable

The Zenfone 4 Max is also quick charge enabled with 2amp charging capacity which will charge 0-100% in 4 hours or give you three hours of battery life from a 15-minute quick charge.

The dual camera rear setup works the same way as the LG G5 in that one is a 120 degree wide angle lens and the other a higher resolution main camera for more detail. For any selfie lovers, you’ll be happy to know that the 8MP front facing camera comes with its own LED soft flash as well as beauty mode.

Quick Specs: Android 7 , Snapdragon 430 CPU, 3GB RAM, 32GB Storage, 5.5″ 1920×1080 Gorilla Glass, 13MP + 8MP Dual Cameras.
Battery Life: 2 days
Battery Capacity: 5000mAh
Quick Charge: Yes
Weight: 181 grams

The ASUS Zenfone 4 Max is available now…

VKWorld S8 Smartphone

VKWorld S8

While VKWorld might not be as well-known as some of the other mobile brands on this list, it’s still a good big battery-life option.

Featuring 4GB’s of RAM & 64GB of storage both made by Samsung and an LG IPS Display that’s protected by Gorilla Glass 4, it’s got some big names behind it.

In terms of battery life, the Samsung 5500mAh non-removable battery will be enough to last you into your second days usage without charging. The VKWorld stands out from the pack as it’s one of the best looking smartphones on our list including both thin bezels and an excellent screen-to-body-ratio.

While it’s not backed up by a MediaTek Helio CPU, the MT6750 Octa-core processor is enough to keep things running smoothly, just not at rocket speeds. The drawback has to be the weight, as the VKWorld S8 weighs in at a whopping 248 grams.

Quick Specs: Android 7.0 Nougat, MediaTek 6750T CPU, Mali-T860, 4GB RAM, 64GB Storage, 5.99″ 2160×1080
Battery Life: 1-2 Days
Battery Capacity: 5500 mAh
Quick Charge: Yes (2amps)
Weight: 248 grams

Great Display with big battery-life, the VKWorld S8 starts at… UK : £145 | EU : €165 | US : $199

I’ve left in the 2016/2017 – Best Battery life Smartphones below

At the right price, some of the smartphones below are still good options. They might come with an earlier version of Android and slightly slower hardware but unless you’re a power user, they could be just what you’re looking for.

Ulefone Power 2

Ulefone Power 2 – Battery Life All-rounder

The successor to the all-mighty Power 1, Ulefone have overhauled their design and components in the Power 2. We still see the same impressive 6050mAh battery but we treated to the latest Android OS 7 Nougat and a full metal body as well as an array of component upgrades.

There’s been quite a jump in performance when compared to the Power 1 with an upgrade to the Mali-860, storage has quadrupled to 64GB and I’m happy to see a front-facing fingerprint reader.

Overall, the Ulefone Power 2 is a well-rounded smartphone with impressive specs and even more impressive battery life. It does come in a little heavy at 210 grams, but it’s a pay-off for the enormous battery.

Quick Specs: Android 7 Nougat, MTK6750T 1.5GHz 8-cores, Mali-860MP GPU, 4GB RAM, 64GB Storage, 5.5″ SHARP 1920×1080, Gorilla Glass 3, 16MP Rear Camera
Battery Life: 3-4 Days
Battery Capacity: 6050mAh
Quick Charge: Yes (2 Amp PE)
Weight: 210 grams

Ulefone Power 2 starts from… UK : £120 | EU : €140 | US : $160

Oukitel K10000 Pro

Oukitel K10000 Pro – Battery Life Beast!

Hailing twenty-seventeen all the way from some future realm is the Oukitel K10000 Pro which, the clues in the name, is backed up by a whopping 10,000mAh battery. Oukitel claims you should be able to see between 10-15 days usage without having to recharge but even half of this would be impressive.

The original K10000 was released a few years ago but has had a complete overhaul with the new Pro version. It now comes with the latest Android 7, a Full-HD screen, fast charging and a fingerprint reader on the back.

What hasn’t changed is the bizarre mix of leather and angular metal Oukitel has used in the design of the K10000 Pro. I guess it must be popular somewhere, right?

Quick Specs: Android 7, MediaTek MT6750 Octa-core 1.5GHz CPU, 3GB RAM, 32GB Storage, 5.5″ 1920×1080 Gorilla Glass, 13MP + 5MP Cameras.
Battery Life: 10+ days
Battery Capacity: 10000mAh
Quick Charge: Yes
Weight: 184 grams

Oukitel K10000 starts at… UK : £150 | EU : €180 | US : $199

Wood effect Ulefone Power

Ulefone Power

The Power is Ulefone’s first attempt at creating a mobile powerhouse and features a whopping 6050mAh battery that will keep you connected for around 3-4 days with medium usage. Pretty impressive! Add to this 3GB of RAM plus an 8-Core MediaTek CPU and the Ulefone Power has some decent hardware for you to play around with.

Alongside days of usage and jealous stares from friends at your stylish wooden smartphone, the Power also packs in a fingerprint sensor, Gorilla Glass 3 screen, IR Blaster and dedicated camera shutter button to make those selfies even easier.

Quick Specs: Android 6, MTK6753 1.3GHz 8-core, 3GB RAM, 16GB Storage, 5.5″ 1920×1080, 13MP Sony IMX214
Battery Life: 3-4 Days
Battery Capacity: 6050mAh
Quick Charge: Yes
Weight: 190 grams (battery included)

Ulefone Power starts at… UK : £100 | EU : €110 | US : $130

Which Smartphone has the best battery life?

The smartphones with the longest battery life is the Doogee BL12000, which features the Guiness World Record breaking 12000mAh battery. A close second is Oukitel’s K10, which also have a ridiculous 11000mAh battery inside.

Oukitel long reigned supreme as the King’s of Smartphone Battery Life, until early 2018 when the Doogee BL12000 was released.

What is ‘Fast Charge’, ‘Fast Charging’ & ‘Quick Charge’ on Smartphones?

One of the biggest problems with smartphones has been their slow charging times. Some clever folks, in their dark underground labs, came up with the idea of pumping more energy into smartphones batteries to make them charge faster.

There’s a problem with this though as charging also causes waste energy in the form of heat and the faster you try to charge a battery the hotter it gets. So the clever boffins needed to think of a way to charge smartphones faster but without them overheating.

To do this, they needed to come up with new charging standards and then apply these to the voltage regulators inside the smartphones. So sorry folks, if your phone wasn’t labelled fast charge when you bought it, plugging it into a fast charger won’t make any difference. The charging regulator will just limit the amount of Amps it lets through.

So in essence, the first part of fast charging on a smartphone or tablet is when you have a USB charger that can push out more Amps. It’s usually 2-3 Amps compared to the standard 1 Amp you’ll find in a non-fast charge charger.

The second part of fast charging is having a device that has specific fast charge regulators inside it which will let it take in more than the standard 1 amp.

What are the different types of mobile phone Fast Charge & Quick Charge?

The leading fast charge standard is made by Qualcomm and the latest version is called Quick Charge 4+ although most production phones are still using the Quick Charge 3 standard. Quick Charge works by being more power efficient with the current from the plug socket allowing it to pushing more amps into the phone.

Quick Charge ready devices have special power regulators that allow them to receive the higher Amps charge without overheating.

We also see Dash Charging from the team at OnePlus and a few other standards from other device manufacturers as well. Another method of fast charging is to alternate between low and high amps. This method is slower than Quick Charge but helps to lower the heat produced whilst still speeding up charging times overall.

What does my smartphone battery life get worse over time?

There used to be a time when all smartphone batteries were removable. The shops were stacked with replacement batteries and it wasn’t uncommon to carry a spare swapping out the dead battery when needed.

If you understand how batteries work, then you’ll know that they come with a limited lifetime, also called cycle count, before they start deteriorating. After around 100-200 cycles you’ll be losing anywhere between 10 & 25% of your battery life depending on the quality of the battery. This didn’t used to be a problem when you could just buy a new battery and replace your old one.

The reason for this battery life decline is down to chemistry. Lithium-ion batteries use a cathode and anode to move the charged ions. Eventually, charging begins to wear out the cathode giving you less overall charge.

Now that a lot of batteries are sealed inside phones, you’ll want to do everything you can prolong the life of your battery. There’s actually an easy way to do this on any phone using an app called AccuBattery.

The most damaging part of any charge cycle is when the battery drops below 20% and above 80%. These two extremes are where most of the battery-life wear is caused. The app helps by automatically setting up alerts to remind you to unplug you phone when it hits 80% and not letting the charge drop below 20%. By doing this you can effectively double the usable lifespan of your device.

Love Tech? Subscribe for weekly updates of our best content!

Want the to know about the latest tech, gagdets and gizmos you can't find on the high-street? Join our tech community and receive weekly or monthly updates!

Awesome! You'll now receive our weekly content updates.

Oops. Looks like something went wrong. Try refreshing the page. If that doesn't work, just send us a message on the contact page.