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ā08-08-2024 04:01 PM in
Galaxy S21I'm looking for a Super Fast travel charger for my and my wife's S21s.
Preferably it would have:
- Three or preferably four ports
- Folding prongs
- Be small and lightweight (under 4 oz).
- Not just display Super Fast Charge but really do it - i.e., minutes to full for SFC is significantly lower than for Fast Charge.
If you have one like that which really works, please let me know.
Solved! Go to Solution.
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ā08-08-2024 05:12 PM in
Galaxy S21@toolworker Sorry but you won't be able to find anything like that under 4 oz. The Anker USB C Charger, 735 Charger is probably as close as you are going to get.
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ā08-08-2024 09:04 PM in
Galaxy S21- Mark as New
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ā08-09-2024 06:46 AM in
Galaxy S21Thanks for your replies.
I was hoping to hear from someone who actually owns a super fast charger that works on their S21.
I've tried two chargers - both great - except neither of them charge my S21 faster than Fast Charge even when Super Fast Charge is enabled. This Rocoren 45w charger has four ports, folds, weighs 3.55 oz., and says it supports PD 3.0 which Samsung says will do SFC. But it only puts out 16 watts on FC and SFC. This charger has the same problem. I've tried two S21s, and two USB C cables including the one included with the phone, with the phone charged to 30% - 40%.
@Dinop43 Sorry I was unclear about "display." With both these chargers the S21 displays "Super Fast Charging" on the lock screen. But the "m to full" is barely shorter than for Fast Charge, and a meter shows 15w - 16w on both FC and SFC.
@LongHikerThe Anker 735 looks good, although it's 4.9 oz, has only 3 ports, and isn't foldable. (I don't see any foldable Anker with more than 2 ports.) But if someone with an S21 tells me that it does SFC I'd buy it.
Any more advice or suggestions would be welcome.
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ā08-09-2024 07:56 AM in
Galaxy S21- Mark as New
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ā08-09-2024 08:47 AM in
Galaxy S21Thanks, @Dinop43 ! The Rocoren charger is rated 25w (9v 2.77A / 12v 2A) from the first USB C port if no other port is in use.
I checked and the sturdy braided cable I was using is only 3A. But it's charging at 9v so I'd think it could pass more than the 13 - 16w I'm seeing.
I'll try a higher capacity cable and report back.
BTW do you know how discharged the phone battery needs to be before it will take the full fast or super fast wattage?
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ā08-09-2024 09:55 AM in
Galaxy S21- Mark as New
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ā08-09-2024 10:08 AM in
Galaxy S21- Mark as New
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ā08-10-2024 07:51 AM in
Galaxy S21@Dinop43 Starting with the S22, the base models support 25W charging; the plus and ultra do 45W.
The S21 has 25W Super Fast Charging and 15W Fast Charging. This says it's doing SFC but the charge rate is the same as FC (red number), even though the charger and cable support 9v/2.77A and 12v/2.08A.
Using a 100W cable didn't help.
Looking around, I learned that the 3A cables probably don't have an E-Marker chip, so the phone can't find out the cable capacity. 5A and up are supposed to have it; this 100W one does. So that's not the problem.
I'm trying all this with my S21 and my wife's, so it's not a defective phone.
I wonder if a T-Mobile store will have a Samsung brand charger that they'd let me try.
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ā08-10-2024 11:25 AM in
Galaxy S21