Which smartphones have the best battery life?

No one wants to have a phone that runs out of battery in time of need. Android phones usually have a large battery that can last a whole day if used moderately. However, if a cell phone is used heavily, you may need to charge the phone more than usual.

The growing use of 4G internet, video streaming, playing games, and chatting consumes the battery rapidly and if the cell phone you are using does not have enough battery, you cannot make use of these exciting features. For those that need long-lasting performance, battery life is one of the most important considerations before buying.

To some smartphone users, battery life is the single most important factor in choosing a device. After all, the best smartphone in the world isn’t worth much if you need to recharge it every few hours.

The good news is that smartphone battery life has improved significantly in recent years, courtesy of the increased capacity of batteries – 3000 mAh (milliamp hours) and higher – and processors and wireless connections that smartly adjust power consumption to suit the job at hand.

Battery innovation has become much better in a previous couple of years, as cell phones are charging quicker as well as lasting longer on one charge. To be sure, your telephone can have the majority of the best components and equipment on the planet, but they wind up noticeably futile if the battery doesn’t keep going long. However, there are plenty of high-end smartphones you can purchase that have solid battery life. In recent times, flagships have started focusing on better battery life and now even cheap phones have moved towards bigger batteries and more powerful than ever before.

For those of you that really tax your phone and can’t take the risk of it dying before your day is up, here is my answer to the question:

Which smartphones have the best battery life?

Here is a list of personally tested smartphones of 2020 with the best battery life:

1. Motorola Moto G7 Power
2. Samsung Galaxy M30s
3. Realme 5
4. Asus ROG Phone 2
5. Samsung Galaxy M30
6. Xiaomi Mi Max 3
7. Nubia red magic 3
8. Xiaomi Redmi Note 8 pro
9. Motorola One Power
10. Nokia 3.2

Now let’s be clear, as I sort these phones by battery capacity, I aren’t including any duds in this list that just happen to have a giant battery stuffed into them, these phones are all going to give you a solid overall experience as well as multi-day battery life.

Here are the detailed reasons why I decided to choose these phones:

1. Motorola Moto G7 Power

Motorola Moto G7 Power - 5000 mAh battery
Motorola Moto G7 Power – 5000 mAh battery

The most important advantage of Motorola Moto G7 Power is its 5000 mAh battery. In practice, it lasted for over three days of mixed to light use, which included music playback, texting and calling, and social media browsing.

After 10 hours of YouTube video, an impressive 52% of the battery remains. In total, we record about 20 hours of screen power on, which is a great result. Motorola claims the phone will last three days. Very likely, unless you are a particularly demanding user. Still, even if you play it very, very often, we can’t imagine a scenario where your battery life doesn’t last for at least two days. More economical users and more. Motorola has done a really great job in this regard.

The smartphone comes with a TurboPower charger (5V/3A, 9V/2A, 12V/1,5A), which allows you to fill an empty Motorola battery is almost 150 minutes. The 50% level during testing was reached after about 50 minutes and 90% after 100 minutes.

2. Samsung Galaxy M30s

Samsung Galaxy M30s - 6000 mAh battery
Samsung Galaxy M30s – 6000 mAh battery

M30s has a huge 6000 mAh battery that will last for two days under moderate usage. I was able to make it last for 2 days and 17 hours with the normal, basic use.

During I watched YouTube videos and used social media apps, the battery lasted for 7 hours 50 mins. I was on WIFI most of the time, so I did not use cellular data as much as I would normally.

It comes bundled with 15W Type-C fast charger that’s is only moderately fast. It takes around 2 hours and 30 mins for a full charge.

3. Realme 5

Realme 5 - 5000 mAh battery
Realme 5 – 5000 mAh battery

Realme 5 boasts a 5000 mAh battery and as per expectation, it lasted quite a while even with moderate-to-heavy use on a regular basis. On a rough account, it easily lasted for over a day with heavy camera usage and a few games of PUBG, besides regular calls, texts, and music streaming.

Realme 5 easily runs for a day and a half, or even two days with a single charge. During our examination, we rarely had to charge the phone after a particular day of use.

The Realme 5 comes with a micro USB port with a 5V 2A charger only. The charger is able to charge up to 50% battery in 41 minutes and charge up to 75% battery in 54 minutes. Refilling that huge battery takes almost 2 and a half hours to fully charge from 0-100%. The phone does not support fast-charging – so I recommend charging overnight instead.

4. Asus ROG Phone 2

Asus ROG Phone 2 - 6000 mAh battery
Asus ROG Phone 2 – 6000 mAh battery

Asus ROG Phone 2 is the best gaming smartphone to own this year if you are highly invested in the world of mobile gaming. Battery life on the ROG Phone 2 is amazing. With a 6000 mAh battery, the ROG Phone II already promised out of the gate to have some substantial staying power. The big battery is meant to compensate for having additional features like the 120 Hz display and X Mode which might consume more battery during gaming.

In our usual video-loop battery test, the battery lasted an impressive 14hr 25min. The battery can go 1.5 to 2 days on a single charge if I do not play games on it. And when you do need to charge, there’s a 30W Quick Charge 4.0 charger bundled in the box. The phone goes up to 25W by itself, but ASUS is offering a 30W charger. Like OnePlus’s Warp Charge, the charging circuitry in ASUS’ charger is included in the adapter, meaning the phone itself will not get hot while charging.

ASUS also explicitly mentions that there’s no need to fully charge the battery to 100% during the daytime, and that’s true. Even with around 50% or 60% charge, you’ll easily get a day’s worth of use from the battery.

5. Samsung Galaxy M30

Samsung Galaxy M30 - 5000 mAh battery
Samsung Galaxy M30 – 5000 mAh battery

Similar to Galaxy M20, M30 also sports a 5000 mAh battery, which is another highlight of this phone. I am not gonna lie, the battery is wonderful in this device.
It will long last for a whole one day and if you are a normal user, then it can be last for 2 days. The company claims that at talk time it can run 31 hours.

Even with hours of video watching on mobile data, I was able to drain only a meager amount of the battery. Add to that an hour of music streaming on Spotify, a couple of hundred WhatsApp messages, Slack, two mail accounts running in the background, selfies, and photos every now and then and about half an hour worth of voice calls, I still managed two full days before I reached for the charger (the M30 still had 6 percent juice).
Galaxy M30 comes with a type-C fast charger (about 18 W) in the box which takes around two hours to get to a 100 percent mark from zero.

6. Xiaomi Mi Max 3

Xiaomi Mi Max 3 - 5500 mAh bettery
Xiaomi Mi Max 3 – 5500 mAh bettery

Battery life is very good from the 5500 mAh cell – double the capacity of that found in some Android phones. Obviously how long it will last depends on how you use the Mi Max, but we can see two days being easily obtainable here. Xiaomi says it is good for 17 hours of video playback.

Xiaomi Max battery life test and the results are quite impressive. The Xiaomi Max only lost 4% of the charge in one hour of video playback. Even while gaming and accessing social network websites for half an hour each, the phone lost just 3% charge under each activity. So, in total, the Xiaomi Max lost 10% after watching videos, playing games and browsing social network websites. That’s pretty impressive.

There is no wireless charging, and the Mi Max 3 does support Quick Charge 3.0. Despite having such a huge battery to refill you can obtain as much as 71% charge in just one hour. It is also equipped with Quick Charge 3.0, and it can be used as a power bank to charge other devices.

7. Nubia red magic 3

Nubia Red Magic 3 - 5000 mAh battery
Nubia Red Magic 3 – 5000 mAh battery

The Nubia Red Magic 3 packs a massive 5000 mAh battery inside with 18W fast charging support. At the launch, Nubia claimed you can play PUBG Mobile for seven hours straight on a single charge. Nubia wasn’t kidding.

I actually played for an hour and the battery drop was just around 5 percent. But there’s a caveat. The battery life is impressive if you keep the CPU and GPU performance in the auto mode. When maxed out and with the fan inside running, the battery drain is actually faster and the battery life is similar to a phone with a 4000 mAh battery. It still manages to easily last a day, even with heavy gaming for a few hours in between. Other tasks like navigation and watching Netflix also doesn’t discharge the phone by more than 10 percent after an hour.

The bundled 18W charger tops up the phone in around 1.5 hours but you can also plug in a 30W charger and it will charge at half the time required.

8. Xiaomi Redmi Note 8 pro

Xiaomi Redmi Note 8 pro - 4500 mah battery
Xiaomi Redmi Note 8 pro – 4500 mah battery

Xiaomi Redmi Note 8 Pro has a 4500 mah battery that gives long-lasting usage time. Users are going to experience high capacity battery the first time with MI phones.

I regularly got over 6 hours-worth screen time, even with mixed usage. This included about one hour 30 minutes of gaming, social media, watching videos and TV series on YouTube and Netflix, and some web surfing. With regular usage, you don’t have to worry about your phone’s battery draining out before the end of the day.

The phone has a USB Type-C port for charging and data transfers, and a 3.5 mm port for audio out. You get the 18-watt fast charger inside the box which takes the juice from 0- 100% in slightly over two hours. It takes about 30 minutes to charge a 40 percent battery.

9. Motorola One Power

Motorola One Power - 5000 mAh battery
Motorola One Power – 5000 mAh battery

The massive 5000 mAh battery of Motorola One Power is long-lasting, with turbocharging support. With one full charge the battery lasts up to two days and also, just 15 minutes of charging can give you up to 6 hours of battery life.

Even if you step out with a 50% charge on the smartphone you would be able to last the entire day with average usage involving phone calls, watching YouTube videos, using the smartphone for navigation and playing some games. When completely charged the smartphone’s battery, it lasted a day and a half for us, which is very impressive.

Motorola One Power only takes about two hours to be completely charged.

10. Nokia 3.2

Nokia 3.2 - 4000 mAh battery
Nokia 3.2 – 4000 mAh battery

For such a small device, the Nokia 3.2 has a pretty powerful battery – at 4000 mAh, it’s bigger than most flagship devices. The reason for the great battery life is all down to the Snapdragon 429 chipset and the Android Pie OS that’s optimized to get the maximum out of a battery. Even if you use the phone to run videos continuously, you can be sure the Nokia 3.2 will last a day without needing to be topped up.

I used the phone for at least 12 hours a day, and the phone needed to charge up again the next afternoon.

Leave the charger at home for the weekend. The Nokia 3.2 battery lasts for up to 2 days, for basic use, on a single charge.

FYI: Now that we have gone through the top 10 phones, I will try to bust a few myths and point out the facts about mobile phone batteries.

The Facts and Myths About Smartphone Battery

Although all these mobile phone models are focused on robust battery life, the flagship smartphones have mostly focussed on integrating a powerful CPU, a glorious high-resolution screen, and enhanced camera experience. And with concerns centered around better battery life, several false rumors and smartphone battery facts and myths have circulated among us.

In the text below, I will be listing some popular myths related to smartphone battery and bring out what are the real facts. Let’s bust some myths and dispel long persistent rumors. Shall we?

Smartphone Battery Myths

  1. It is preferable to charge a smartphone every time from nil to 100% to preserve battery life.
    No. Modern Li-ion batteries are pretty darn good at calibration and hence can mostly be charged as per your own charging habits. It is just preferable to calibrate your battery after a major OS update, and that’s it.
  2. Overcharging Your Smartphone Can Harm your Smartphone Battery to the Extent of Ruining it
    Wrong. Although it is advisable to charge your phone only up to a certain degree. Once your phone battery is charged to a 100%, the charger automatically switches off. The battery tech is then smart enough to know exactly when it needs to reinitiate the charger connection.
  3. All Battery Saving apps help save battery
    Another glorious misconception. Most battery-saving apps are basically app-killers which force stop apps randomly in the background. Considering the way the Android OS works and wants to keep a thread of the frequently used apps running in the background to speed up app cold starts; these battery saver apps might cause more harm than good. This is so because the CPU wakelock is disturbed just to start the apps again after they are closed by the battery saver.
    There are, however, certain exceptional apps like Greenify which theoretically work in a different way which relies on app hibernation and thus helps in improving overall performance as well as in reducing the strain on your battery.
  4. Certain Battery saver apps with ‘charging booster’ help charge your device faster.
    We call that BS. No ‘app’ can speed up your charging significantly. It is a hardware-dependent feature that can NOT be emulated. The only way this is possible is if the so-called app closes resource hungry apps in the background. Again, that will have minimal effect.

Smartphone Battery Facts

  1. Excessive Heat is Harmful to You Smartphone Battery
    Try to keep your phone cool at all times. The reason you are advised against third-party chargers is also the same – because they might cause excessive heat, and in turn, harm your device.
  2. Amperage Output of Your Charger Matters
    Whether or not your smartphone maker offers a high-output charger can make a big impact as well. As an example, the Apple iPhone 6/6S had support for up to 2.1 Ampere AC charging but came bundled with a measly 1A adapter. In such cases, switching to a higher amperage (branded) charger can help improve charging times to a great extent. However, do remember to carefully check your device for support.
  3. To charge your device faster, avoid using it when plugged in, or even better, switch it off altogether.
    Logically, your device charges quicker when in flight mode with less heat dissipation. If you are in a rush, you could also switch it off to get that extra juice. Also, if you are charging from a USB power source like your laptop, it’s better to switch off your phone to squeeze in a good enough charge.
  4. If you are a road warrior, choose a Powerbank wisely
    With fewer phones coming with removable batteries these days, buying a powerbank is the most logical decision you can take. When looking for the best powerbank, look for one that has a higher power output (preferably >=2A similar to AC adapters) because, well, none of us wants to keep our phones connected to a powerbank while it takes ages to recharge!

Okay, that would be it. We probably covered most of the prominent myths and /or facts that can help preserve and enhance the life of a smartphone battery. If you feel I missed to mention any fact or myth get tap-tippety-tap on your keyboard in the comments section below.

IT Informer
I am a Experienced in Wordpress, SEO and Social Media Marketing with also extensive experience in forecasting and data analysis. My passion is Website Speed optimization. IT Informer is a place where I and my colleagues follow the latest IT trends.

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