Samsung Galaxy Z Flip4 : Battery Life + Charging Speed!

Take a look at the battery recharging speed of the Samsung Galaxy Z Flip4, and find out how its two refresh rate options affect its battery life!


Samsung Galaxy Z Flip4 : Refresh Rate Affects Battery Life!

The new Samsung Galaxy Z Flip4 offers two refresh rate options (Settings > Display > Motion smoothness) :

  • Adaptive : Get smoother animation and scrolling by automatically adjusting your screen refresh rate up to 120 Hz
  • Standard : Get longer battery life with a 60 Hz screen refresh rate

The Adaptive mode dynamically refreshes its main, foldable display between 1 Hz and 120 Hz.

By default, the Galaxy Z Flip4 uses the Adaptive mode, for smoother graphics, but you can choose to switch to the Standard mode for longer battery.

In the next section, we will look at how the two refresh rate options affect the Galaxy Z Flip4’s battery life.

Read more : Samsung Galaxy Z Flip4: Unboxing + First Impressions!


Samsung Galaxy Z Flip4 : Battery Life Comparison!

The Samsung Galaxy Z Flip4 comes with a larger 3,700 mAh battery, which is 400 mAh (12%) larger than last year’s Galaxy Z Flip3.

To test its battery life, we turned off Automatic Brightness, and set its display brightness to 50%.

Why 50%? That is actually slightly higher than the average indoor brightness level of 40% during the day, and is what we usually use in all our mobile battery life tests.

It is important to fix the brightness level, to make sure the screen brightness does not change as the ambient brightness changes.

We then ran the PCMark Work 3.0 battery life test until its battery capacity dropped to 20% several times, and this was the best result we obtained with the Standard and Adaptive refresh rates :

Will you look at that! The battery life for both options are now much closer than with the Z Flip3!

The Samsung Galaxy Z Flip4 has a battery life of just over 9 hours with Adaptive refresh rate enabled, and 10.25 hours with the Standard refresh rate!

Let’s compare its battery life at 60 Hz and 120 Hz, against the S22 Ultra, S21 Ultra and Z Flip 3 smartphones.

Standard Refresh Rate (60 Hz)

The Samsung Galaxy Z Flip4 naturally has the best battery life with the refresh rate set to 60 Hz.

But what’s really important to note here is that it is as power-efficient as the Galaxy S22 Ultra, about 10% more efficient than the Z Flip3, and 18% more efficient than the S21 Ultra!

Work 3.0 S22 Ultra Z Flip4 Z Flip 3 S21 Ultra
Battery Capacity 5,000 mAh 3,700 mAh 3,300 mAh 5,000 mAh
Battery Life 14 hrs 15 mins 10 hrs
14 mins
8 hrs 11 mins 11 hrs 22 mins
per min.
4.68 mAh 4.82 mAh 5.38 mAh 5.87 mAh

Adaptive Refresh Rate (120 Hz)

While the Galaxy Z Flip4 looks like the Z Flip 3, its energy efficiency was greatly improved to the point that the Adaptive refresh rate is really usable for most people!

Turning on adaptive refresh increase the Z Flip4’s power consumption by just 11%, giving you a very usable battery life of 9 hours 12 minutes!

That makes the Galaxy Z Flip4 about 14.5% more efficient than the S22 Ultra, 16% more efficient than the S21 Ultra, and 18% more efficient than the Z Flip3.

Work 3.0 Z Flip4 S22 Ultra S21 Ultra
Z Flip 3
Battery Capacity 3,700 mAh 5,000 mAh 5,000 mAh 3,300 mAh
Battery Life 9 hrs
12 mins
10 hrs
38 mins
10 hrs
26 mins
6 hrs
44 mins
per min.
5.36 mAh 6.27 mAh 6.39 mAh 6.53 mAh


Samsung Galaxy Z Flip4 : Battery Recharging Speed!

The Samsung Galaxy Z Flip4 supports up to 20 watts of wired fast charging, but unfortunately, does not come with the charger in-the-box.

So we tested it using the standard 15 watt Samsung fast charger that shipped with their previous smartphones, which is what we believe most users will end up doing.

But we used the 25 watt charger for the S21 Ultra, because it came with that charger.

Work 3.0 S21 Ultra S22 Ultra Z Flip 3 Z Flip 4
Battery Capacity 5,000 mAh 5,000 mAh 3,300 mAh 3,700 mAh
Charger Output 25 watts 15 watts 15 watts 15 watts
Battery Life 64 minutes 64.5 minutes 88.5 minutes 98.75 minutes
Recharging Speed
(per minute)
62.5 mAh 62.0 mAh 29.8 mAh 30.0 mAh

Samsung appears to intentionally reduce the charging speed for their foldable Z Flip3 and Z Flip4 smartphones, probably to avoid producing excessive heat.

Hence they both recharge twice as slowly as the S22 Ultra, even using the same 15 watt charger!

Because of its larger battery, the Galaxy Z Flip4 fully recharges from 20% to 100% in just over 1.5 hours with the standard 15 watt Samsung charger.

That gives us a battery life to recharging time ratio of about 6.22:1, which is pretty decent. You get about an hour’s worth of battery life for every 10 minutes of recharge.


Samsung Galaxy Z Flip4 : Price + Availability

The Samsung Galaxy Z Flip 4 comes in four colour options, as well as a special Bespoke Edition :

  • Graphite – legacy colour
  • Pink Gold – new colour
  • Blue – new colour
  • Bora Purple – their signature colour this year

These are the available models and launch prices for the Z Flip 4 :

  • 8 GB + 128 GB : RM4,099 (about US$920 / £760 / A$1,319 / S$1,267)
  • 8 GB + 256 GB : RM4,399 (about US$987 / £816 / A$1,415 / S$1,359)
  • 8 GB + 256 GB Bespoke Edition : RM4,599 (about US$1,032 / £853 / A$1,479 / S$1,421)
  • 8 GB + 512 GB : RM4,899 (about US$ 1,099 / £909 / A$1,576 / S$1,514)

The Bespoke Edition is only available on the Samsung website, and requires 3-4 weeks to deliver, as each unit is custom-made.

Here are online purchase options :

Read more : Samsung Galaxy Z Flip 4 : Colour Comparison!


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Dr. Adrian Wong has been writing about tech and science since 1997, even publishing a book with Prentice Hall called Breaking Through The BIOS Barrier (ISBN 978-0131455368) while in medical school.

He continues to devote countless hours every day writing about tech, medicine and science, in his pursuit of facts in a post-truth world.


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