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Most Affordable & Adequate Phones with Longest Battery Life


Most Affordable & Adequate Phones with Longest Battery Life


In this article, I aim to share with you information, and my opinions on the most affordable and latest phones with longest battery life. Whether you’re looking around for a cheaper smartphone to buy or you want to change to a better one but don’t want to spend so much money, then you’ve come to the right place. So let’s dive in and see these affordable smartphones with great battery life.


Samsung Galaxy A21s

Samsung Galaxy A21S smartphone, Phones with longest battery life
The budget Samsung Galaxy A21s smartphone


SAMSUNG GALAXY A21s 4G LTE | DISPLAY: 6.5 inches, PLS IPS, 720 x 1600 pixels | CPU: Exynos 850 (8nm) | STORAGE/MEMORY: 32GB 4GB RAM, 64GB 4GB RAM | OS: Android 10, OneUI 3.1 | CAMERA: Quad camera, 48MP (wide), 8MP (ultrawide), 2MP (macro), 2MP (depth) | SELFIE: 13MP (wide) | VIDEO: 1080p at 30fps | BATTERY: 5000mAh, supports fast charging (15W) | WEIGHT: 192 g

RATING: 3.8 out of 5 



  • Great battery life
  • Standard phone design
  • Good day camera images
  • Includes headphone jack  


  • Plastic build less durable
  • Standard performance
  • Poor quality display
  • Poor sound quality
  • Slow 15W fast-charger

I first heard of the Samsung A21s smartphone whilst looking around for a budget smartphone. It’s not the most hyped-up phone out there now but it makes for it thanks to its features. It’s available at an affordable price tag of less than US$300 (4000 ZAR). It includes an average of up to 25 hours of all-day battery life and lasts up to 5 days if used moderately.

On moderate use, it can last you a total of 5 days. It also takes good quality day pictures. Let me warn you this phone’s made of plastic which affects phone durability. The overall performance is workable. The poor quality display and poor loudspeaker performance. 

Overall, this is one phone to try when you really need a budget phone. I recommend it as one of the best phones with longest battery life.   



Xiaomi Redmi Note 9S

Xiaomi Redmi Note 9S smartphones, Phones with longest battery life
The All-round Xiaomi Redmi Note 9S smartphone


XIAOMI REDMI NOTE 9S 4G LTE | DISPLAY: 6.67 inches, IPS LCD, HDR10, 1080 x 2400 pixels | CPU: Snapdragon 720G (8nm) | STORAGE/MEMORY: 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM | OS: Android 10, MIUI 12 | CAMERA: Quad camera, 48MP (wide), 8MP (ultrawide), 5MP (macro), 2MP (depth) | SELFIE: 16MP (wide) | VIDEO: 4K at 30fps, 1080p at 30/60/120fps, 720p at 960fps  | BATTERY: 5020mAh, supports fast charge (18W) | WEIGHT: 209 g

RATING: 4.2 out of 5



  • Great battery life
  • Amazing gaming performance
  • Solid performance
  • Splash resistance
  • Modern phone design
  • Great photo and video quality
  • Includes headphone jack
  • Fingerprint scanner on the power button


  • Easily smudges from fingerprints
  • Mediocre camera in night mode
  • No earphones in box

When I came across the Xiaomi Redmi Note 9S, I saw the price, then I thought to myself ‘Okay, another budget phone’. Turns out that this is quite a monster of a smartphone. 

Checking out the specs, it includes a great performance chip, takes detailed videos and pictures, and you get up to 26 hours of all-day battery life lasting over 5 days 18 hours if used moderately. Speaking of which, it’s powered by a large 5020mAh battery and supports fast charging.

All this under a US$300 (5000 ZAR) price tag. If you doubt me, try it. You won’t be disappointed. Another great recommendation to be one of the best phones with longest battery life.

Check out my review of the Redmi Note 9S here



Motorola Moto G Power (2021)

The Motorola Moto G Power (2021), Phones with longest battery life
The battery life champion, Motorola Moto G Power (2021)

MOTOROLA MOTO G POWER 4G LTE (2021) | DISPLAY: 6.6-inches, IPS LCD, 1600 x 720 pixels | CPU: Snapdragon 662 (8nm) |  STORAGE/MEMORY: 32GB 3GB | OS: Android 10 | CAMERA: Triple camera, 48MP (wide), 2MP (macro), 2MP (depth) | SELFIE: 8MP (wide) | VIDEO: 1080p at 30/60fps | BATTERY: 5000mAh, supports fast charging (15W) | WEIGHT: 206.5 g

RATING: 3.9 out of 5



  • Good phone design
  • Comes with a large display
  • Really affordable price
  • Takes great quality pictures
  • Includes micro SD to expand storage
  • Great all-day battery life


  • Limited internal storage options
  • Average budget performance
  • Low quality display

When I came across the new Moto G Power smartphone, I was skeptical at first to review it because of the mixed review scores and comments. But when I did research on it, I was happy with a number of things.

The premium look and modern design. The large 6-inch screen. The amazing quality and detail of the camera pictures. The 25 hours of all-day battery life, lasting up to 5 days if used moderately.

You get all this and more at under US$200 (3000 ZAR). Remember though that it’s a budget phone so a few compromises here or there will be present. The most noticeable is the low-lit display. Overall performance is standard. The biggest storage model is 64GB but yes you can expand it with a micro SD card.

In short, the Moto G Power smartphone is your standard budget smartphone but has enough battery life for a whole day’s use. I recommend it as one of the best budget phones for longest battery life. 



These are some pretty powerful phones in this price range. They are well-designed, attractive, functional, affordable and each has a big battery.

But at the same time, these mid-range phones here come with compromises, and yes they are expected at this price range. But at least you don’t have to worry about the battery power going flat any time soon.

Out of the three, my money’s on the Redmi Note 9S. It may have the longest battery life of the three, but also a great overall budget smartphone to get right now. It’s more expensive but once you try it you will be impressed.    



Thanks for checking out my article on the budget phones with longest battery life. If you have any comments, please leave them below. What do think of my recommendations? Do you own these smartphones phones already? What’s your experience with the battery life?

If you want to find out more about these great smartphones, click on the buttons or links provided. It could be the best decision you will ever make.  

Take care and stay safe. Check you next time.




Working in construction projects full time, and promoting mobile computing devices part-time, I'm an ICT and project management graduate using this platform to help fellow web surfers find tech solutions to solve daily problems.

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