28-01-2021 01:58 PM - last edited 28-01-2021 04:52 PM
We’ve been noticing a lot of conversation in our Community about power, battery and charging on the S21 family devices, so wanted to consolidate a quick guide for you to help you with your questions!
What data/power cable comes with the S21, S21+ or S21 Ultra?
You’ll get a USB-C to USB-C cable in the box with your S21, S21+ or S21 Ultra that you can use for wired data transfer or to power your phone with a Samsung power adapter (sold separately).
What power adapter (power brick/travel adapter/charger block) should be used with the S21, S21+ or S21 Ultra?
We recommend that you use a 25W USB-C Samsung Power Adapter (that block that goes into the mains) with your S21 device. This will allow you to benefit from Super-Fast charging with your phone to keep you going. You can use a compatible Samsung charger from a previous device, or can buy the adapter separately (as you know, it does not come in the box).
Do the S21, S21+ or S21 Ultra support wireless charging?
You can use Qi wireless charging to power your device with a wireless charger (sold separately) or can turn your new phone into a wireless charging pad to charge other compatible devices by using the Wireless Powershare feature.
Helpful power, battery and charging specifications
|
Galaxy S21 |
Galaxy S21+ |
Galaxy S21 Ultra |
Battery capacity |
4,000 mAh |
4,800mAh |
5,000mAh |
Data/power cable (included in the box) |
USB-C to USB-C cable |
||
Power adapter (sold separately) |
USB-C power adapter |
||
Wireless Charging |
Yes, using Qi wireless charging standard |
||
Wireless PowerShare |
Yes |
||
Wired Charging Speed |
Super-Fast Charging with Samsung charger that supports this (25W USB-C) |
||
Compatible Samsung power adaptor (sold separately) |
Up to 25W |
Will my 45W charger work with the S21 devices?
A Samsung 45W USB-C power charger will charge the S21 super fast using up to 25W. To achieve super-fast charging speeds it must be connected usb-c to usb-c.
The charger defines the maximum amount of power that it can draw but the device will define how much is actually drawn to the device.
Is there a 45W charger available for the S21 series?
With the enhancements to our charging technology, we no longer see the benefit of 45W chargers and are able to deliver super-fast charging with 25W chargers.
Do you have more power, battery or charging questions, please post in the below!
20-02-2021 06:01 AM
Updated to AUB9 yesterday. Phone drained 25% overnight on 8hrs of standby. What a mess.
21-02-2021 10:45 AM
Just done that since the update ? Fine before it ?
28-02-2021 11:54 PM
+1 for terrible battery life. My 4 year old Huawei P20 Pro that I traded in for the S21U was outlasting the S21U easily by 2 hours or more SOT. Not happy whatsoever. I'm getting around 6 hours of SOT, it's frankly just nowhere near good enough for a £1200 phone. Also my phone is pretty much always warm to the touch too - and I only use it for light useage like reddit scolling and reading newspaper articles! I don't understand why it has problems with heating from just browsing webpages
05-03-2021 10:24 AM
08-03-2021 07:33 AM
My 2 year old Huawei Mate 20 Pro can outlast the Samsung S21 Ultra the same usage, and does not heat up as bad as the s21 ultra
11-03-2021 03:35 PM
I am having exactly the same problem! My S21 Ultra battery wise is performing worse than my A21 (2019) or S7..., like twice as bad and those are already old devices...
4h SOT (Screen on Time) this is what I am getting each day! Like WTF...
I have tried probably every single battery optimization trick in the book, except turning off the WQHD and 120HZ as those are the features I bought this beast of a phone for. And I am heavily disappointed.
What I have tried:
At this is what I get... see below:
Screenshoot #1 - This is pretty much my daily experience... bearly 4h SOT and my S21 Ultra is Dead... worse than all 3 phones I had previously.
Screenshot #2 - Almost dead less than 4h SOT
Screenshoot #3 - This one is from today, I am about to charge it for the third time and it is only 3pm... No games, nothing... The high number of SOT due to me charging a few times during the day
I am so frustrated at this point, I am not sure if I should go return it to Samsung, do I have a defective unit?
Also on a side note, it tends to run hot even when I do a simple thing like scrolling a website for longer period of time....
Is this is what the most expensive smartphone on the market experience should be? Turning off almost everything to function? I never had to do it to this degree in the past...
27-03-2021 09:26 AM
04-05-2021 08:00 AM
I experienced similar problem - 4 of my 5 cables (btw - official Samsung originals from NOte 8, SG A70, SG m31s started to show "check the cable connection" when plugged into the phone and estimated charging length was about 10-20 HOURS!!! It is insane. It appears that the software started to "check" what cable is plugged or so... because when I bought a new cable (Samsung original) it shown the same "error". All started with last update. Before that all cables were working properly and even they did not support superquick charging whey worked (2-3h charging time). Now they dont.
21-06-2021 06:41 PM
First let me say that I've been using Samsung phones sinc3 S6 series. These phones are atrocious, I'm using my Note 20 alongside my new S21 ultra and my battery life has dropped to 35% while my Note20 is at 85% using same apps and my S21 was charged after my note 20. Units are getting hot as wll. Many people complaining of the same issue. Response was to ship me out 2 new phones. If these react the same way, I'm getting my money back. I've already purchased new cases and screen protectors so I'll be out that money as ell.
05-08-2021 04:05 PM
Hi all , thinking of getting the S21 not + or ultra , battery life is a thing I'm particularly interested in , what's sot like ?? Thanks