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Hi everyone, I'm looking for more info about the fast charge function of the Note 4: I can read on the charger that it either provides 5 on 9V. Does this mean that I can supply 9V on the USB port to fast charge my note 4 ? Does anyone know how the charger detects wheher it it should supply 5 or 9V?
botid said:
Hi everyone, I'm looking for more info about the fast charge function of the Note 4: I can read on the charger that it either provides 5 on 9V. Does this mean that I can supply 9V on the USB port to fast charge my note 4 ? Does anyone know how the charger detects wheher it it should supply 5 or 9V?
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Yes, it means that that charger will deliver power at 9 V (at 1.67 A) to the phone.
As for how it decides which voltage/current to use, it'll be as a function of the battery's charge level, temperature, and probably some other factors, but that's getting into some very specific settings for the phone/charger system by that point.
Dan1909 said:
Yes, it means that that charger will deliver power at 9 V (at 1.67 A) to the phone.
As for how it decides which voltage/current to use, it'll be as a function of the battery's charge level, temperature, and probably some other factors, but that's getting into some very specific settings for the phone/charger system by that point.
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thanks for the quick reply! I've got a couple of Dc Converters (buck) and lipo batteries (11.1V) and was wondering how the phone signals the charger it can accept 9V and if I can use my DC step down to feed the phone with9V...
I guess I will have to try
botid said:
thanks for the quick reply! I've got a couple of Dc Converters (buck) and lipo batteries (11.1V) and was wondering how the phone signals the charger it can accept 9V and if I can use my DC step down to feed the phone with9V...
I guess I will have to try
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I guess it requires original charger for that function, probably with kernel modification you can disable that only 9v OEM charger use for QC
Hello guys ! Do you think this fast charging function is alright for the battery ? as far as i know high current may damage the battery .
liberfarb said:
Hello guys ! Do you think this fast charging function is alright for the battery ? as far as i know high current may damage the battery .
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I agree that it might be damaging to the battery (but obviously not extremely damaging). Why else would there be the option to switch off fast charging? I've switched mine off anyway because I have no use for it as my phone charges overnight and makes no difference how quickly it gets to 100%.
ozaghloul said:
I agree that it might be damaging to the battery (but obviously not extremely damaging). Why else would there be the option to switch off fast charging? I've switched mine off anyway because I have no use for it as my phone charges overnight and makes no difference how quickly it gets to 100%.
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Thank you for the quick replay mate , I have switched this feature off as well for the same reason I charge my smartphone during the night
ozaghloul said:
I agree that it might be damaging to the battery (but obviously not extremely damaging). Why else would there be the option to switch off fast charging? I've switched mine off anyway because I have no use for it as my phone charges overnight and makes no difference how quickly it gets to 100%.
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I personally thought the option to disable Fast Charging was Samsungs' way of reminding us, or letting the uninformed know, that it can do it.
The generally accepted rule amongst radio control hobbyists is that provided the battery is well made, it's not the current that'll kill a battery - it's overcharging it (over 4.2V per cell on a LiPo). Provided that the charging circuit is good (and I have no doubt it is of a high quality) we shouldn't see any degradation in battery life when used with the fast charge process.
Others may chime in with more info, but that's how I understand it.
SquidgyB said:
The generally accepted rule amongst radio control hobbyists is that provided the battery is well made, it's not the current that'll kill a battery - it's overcharging it (over 4.2V per cell on a LiPo). Provided that the charging circuit is good (and I have no doubt it is of a high quality) we shouldn't see any degradation in battery life when used with the fast charge process.
Others may chime in with more info, but that's how I understand it.
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l believe the fast charge is safe for the battery as it charges it at 1C (=1hr charge) which is actually not so fast.
Here is my tip: I have an old charger to charge overnight and use the mote 4 charger only for fast charging during the day (I leave it in my bag). I'm actually lookingfor a way to make a fast charging battery bank.
So here is my question again: has anyone tried supplying 9V to the phone ?
best device in charging
its charging up the whole battery in about an hour, i really like that and the battery gives me a full day
So far right now i can talk for about an hour and play games for about an hour and leave it on overnight and all day and still have 82% left. I'm super impressed!
equlizer said:
So far right now i can talk for about an hour and play games for about an hour and leave it on overnight and all day and still have 82% left. I'm super impressed!
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YOAH!!! Thats insane!
I know that the amperage on the charger is huge in its speed.
I used many custom Roms and kernels in the past on other phones with fast charge. I used several chargers and always charged much quicker with higher amperage outputs. Some were as low as 300 MA to as high as 1.2A. This is why the amperage is so high on this phones charger. The voltage is needed to push the charge quicker. Good luck finding high A charger at 9v.
My 1.2A charger i use as backup is much faster then the 500/700ma ones I have but they are all 5v and can't compete with fast charge.
Sent from my *ROOTED* Note 4 SM-N910W8
I'm also looking for a power bank that would be able to charge at
- 5V 2A,
- 5.5V (Galaxy Tab S)
- 9V (Note 4).
- with 2x18650
- able to charge itself fast too;
- charge-through (charging a device while changing itself).
i now have this ENB model, but it does not deliver 2A to Tab S (and charges at 5V not 5.5).
And it charges itself with 1A even from 2A-capable power supply.
Hi all,
I notice something that the note 4 does not charge fast after I installed S-View cover (original one), although an indication appeared that it is using the fast charging function.
I guessed it assume that the cover is open and charge slower. However, if I removed the S-View it charge noticeably faster.
Do you think this a bug in firmware ??
Thank you,
The so-called USB fast chargers query the device to be charged. Devices capable of fast charging at 9V DC have additional circuitry in their USB ports that the charger can detect. If the charger doesn't detect the circuitry, it falls back to 5V DC mode, like any other USB charger. Assuming the fast charger is functioning correctly, it should not over-charge an older phone or tablet that doesn't support fast charging; it will simply take as long as the original "dumb" USB charger did.
I am looking for best car charger, my phone will be all day on in the car, and I am looking for best solution for charging in the car, and fastest.
I found few good chargers but not sure are they support quick charge
Samsung OEM ECA-U21CBE Micro-USB 2-Amp Rapid In-Car Power Charger
and
Car Charger, iOttie RapidVolt 5Amp/25-Watt Dual Port USB Car Charger
Or is there some third better solution? Sorry I can't post links
thank you
anything above 2A is consider fast/rapid charge and barely any difference than the "quick charge" not to mention, saving a few mintues might do more harm than good to your replaceable battery.. at 2A, the phone will go from 6-10% battery to 50% in about 25 minutes.
Anker:
http://www.amazon.com/gp/product/B00D82O68Y/
Ottie:
http://www.amazon.com/gp/product/B00KTBOUWO/
I have the Anker and would buy it again, and has tons of positive reviews..
Thank you, what about Verizon Quick Charge 2.0?
I have used Verizon QUALCOMM version and would recommend the quick charge version if you want to take advantage of the quick charge. If time to charge I not an issue then obviously any high amp charger like the units cited above such as iottie would work
Is quick charge healthy for battery in my case? Or maybe should I get slower one?
I am using the Airdock.
While I can't say I loved it with the S5 (was falling off) the flat back of the Edge fits perfectly on it so I'm much happier with it.
Fun streaming video, back passengers can watch video off of it with the car speakers...
works well.
rhesus98 said:
While I can't say I loved it with the S5 (was falling off) the flat back of the Edge fits perfectly on it so I'm much happier with it.
Fun streaming video, back passengers can watch video off of it with the car speakers...
works well.
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I think we are talking about chargers
TozABG said:
I think we are talking about chargers
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Airdock is a wireless charger.
TozABG said:
Is quick charge healthy for battery in my case? Or maybe should I get slower one?
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faster charging will always put a bit more wear on battery than charging at a slower rate. most people here will probably swap devices often so probably doesn't matter for them. if you plan to keep your device for a few years and want max battery life then maybe use a 5V 2A charger instead (one that i've linked to above).
2A is still "fast charge" the only difference is it's Quick Charge 1.0 which is at 5 Volts compared to Quick Charge 2.0 that runs at 9 Volts.
better example:
Quick Charge 1.0 - 5V @ 2A (5V * 2A) = 10 Watts of power
If your phone is at around 8-10% you'll get to about 50% charge in about 30 minutes.
Quick Charge 2.0 - 9V @ 1.7A (9V * 1.7A) = 15 Watts of power (up to 12V * 3A = 36 watts for some tablets)
If your phone is at around 8-10% you'll get to about 50% charge in about 20-25 minutes.
Quick Charge 2.0 will only be a little bit faster once the battery gets to around 50-60%, then it will throttle down to Quick Charge 1.0 rates to keep the battery from getting too hot and causing excessive wear.
All Quick Charge 2.0 devices are also backwards compatible with Quick Charge 1.0, meaning that you can use a Quick Charge 2.0 device with a Quick Charge 1.0 supply, and visa versa.
In short: Quick Charge 2.0 will only save you about 15 minutes to completely charge your phone compared to the normal 5V @ 2A chargers.
Get Verizons branded car charger with fast charge. Workscexcellent, and AND has a little flashlight right above the micro charge plug, which comes in super handy in dark car. Very well made.
tft said:
anything above 2A is consider fast/rapid charge and barely any difference than the "quick charge" not to mention, saving a few mintues might do more harm than good to your replaceable battery.. at 2A, the phone will go from 6-10% battery to 50% in about 25 minutes.
Anker:
http://www.amazon.com/gp/product/B00D82O68Y/
Ottie:
http://www.amazon.com/gp/product/B00KTBOUWO/
I have the Anker and would buy it again, and has tons of positive reviews..
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Thats not true, Yes its better
if you want Fast charge it has to have 9v out
others have 5v out even tho some have a 2.4amp out not a fast rapid charger
Good Car charger
Search Amazon for ASIN:B00ZA1E3IE
I've got two of these:
http://www.amazon.com/Getwow-Charge-Dual-Port-Charger-Adapter/dp/B00V347I9S/ref=sr_1_2?ie=UTF8&qid=1437142458&sr=8-2&keywords=getwow+quick+charge+2.0&pebp=1437142467005&perid=0CTJ7JA68RAQ65CF2GVN
One in my car for my S6 Edge, one in my wife's SUV for her Note 4. Both work fantastic. They have one QC 2.0 port and one 2A port. Check it out!
Not sure whether this Car Air Conditioner Vent Mount is for you or not.
This looks like same as adaptive fast wall charger:
http://www.samsung.com/us/mobile/cell-phones-accessories/EP-LN915UBESTA
http://www.amazon.com/gp/product/B00X4JGELS?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00
Did anyone try it?
shaq1907 said:
This looks like same as adaptive fast wall charger:
http://www.samsung.com/us/mobile/cell-phones-accessories/EP-LN915UBESTA
http://www.amazon.com/gp/product/B00X4JGELS?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00
Did anyone try it?
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I bought this one. Didn't fully test yet but when I plug this, it says "fast charging". It would be better if this has light notification. But it's good that it charges fast.
Everything I can find says that the only way we can "quick" charge is with the official OP Dash charger?
anything else we use will only do normal/slow charge?
As far as I know, this is correct. Dash Charge and Quick Charge are entirely different technologies that are used to accomplish a similar goal.
I believe that you can still use the QC charger, but as a normal charger. Just like Dash Charger when plug other phone in, it just turn into normal charger. But there is a potential problem here, Dash Charge works by pumping a lot of amps and keep the voltage the same, while Quick Charge doing it vise-versa, and QC is a technology develop by Qualcomm, meaning the SoC itself in the OP3/3T would support it, it just the rest of the hardware do not. If for whatever reason, the QC charger still provide more voltage than 5V, it could damage the phone. I don't know what is the max voltage the 3T can take before it get damage. If you want an official answer, get it from OP.
USB C plugs will work from what I've read, but nothing will quick charge but the Dash chargers--just normal chargers. Which is fine for me honestly, I use a regular charger at home (overnight) and keep the dash charger with me for work/etc where I need to pump juice faster.
That's dumb....I was hoping for quick charge 3.0 support plus dash charging. GAH! I might get a dash car charger then....I use my phone a lot. I like being able to charge fast while I use GPS. I use GPS a ton. And my new portable charger....QC 3.0.... That part of it is useless now.... grrrrr, but is this verified?
Maybe we all should contact Anker, and ask for Dash Charge support. What I very want is the multi ports car charger with at least one Dash Charge. But such charger do not exist anywhere.
someone0 said:
Maybe we all should contact Anker, and ask for Dash Charge support. What I very want is the multi ports car charger with at least one Dash Charge. But such charger do not exist anywhere.
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Would love to see some 3rd party support.. in principle the idea of moving this function outside the phone seems appealing... but I hate only having 1 vendor to buy from... and I'm not even clear.. can I use the Dash charger to charge my non-OP devices? (ie. reducing the # of gizmos I have to travel with).
zim2dive said:
Would love to see some 3rd party support.. in principle the idea of moving this function outside the phone seems appealing... but I hate only having 1 vendor to buy from... and I'm not even clear.. can I use the Dash charger to charge my non-OP devices? (ie. reducing the # of gizmos I have to travel with).
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Yes but it won't "dash" charge them.
I asked the same sort of question here: http://forum.xda-developers.com/showpost.php?p=69856748&postcount=5
I've been using an anker QC 3.0 charger on the OP3T and it charges fine.
it doesn't get hot, doesn't say it's fast charging but it seems to charge at a reasonable rate nonetheless.
jpfx said:
I've been using an anker QC 3.0 charger on the OP3T and it charges fine.
it doesn't get hot, doesn't say it's fast charging but it seems to charge at a reasonable rate nonetheless.
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Thanks for that.
I'm interested in knowing if the voltage/amps/whatever are going to mess with the OPO battery that's not rated for the Q3.0.
Does anyone know if USB-PD charging would on the 3T? I ask this because as a nexus 6P user i have a number of charging accessories, and USB-PD is baked into the USB-C standard. So logic would dictate assuming the 3T conforms to the standard it should be able to charge at 5V 3A, which would be slower than dash charge, but quicker than the average charger.
Have a good one!
I have a 7 port anker usb3 hub that has 2 charging ports and a 2amp 12v wall wart. It charges just as fast as the OP3T charger. Full charge from 50% after work in under an hour.
Sent from my ONEPLUS A3000 using Tapatalk
To power up, you consume Red Bull. But your phone just needs its adaptive fast charger. Rate this thread to express how quickly the Xiaomi Poco F2 Pro (Redmi K30 Pro) can charge. A higher rating indicates that it charges extremely fast.
Then, drop a comment if you have anything to add!
With the supplied charger and cable the charging time is very impressive ("Turbo Charge") with a normal QC3.0 charger charge time is still very good but comparable to most other QC3.0 devices.
Something to note is the device does get noticeably warm when using the supplied charger in the "Turbo Charge" mode.
Takes about an hour for me with included charger.
murakh said:
With the supplied charger and cable the charging time is very impressive ("Turbo Charge") with a normal QC3.0 charger charge time is still very good but comparable to most other QC3.0 devices.
Something to note is the device does get noticeably warm when using the supplied charger in the "Turbo Charge" mode.
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yes i noticed it get warm to hot-ish
isn't that bad for the battery?
moreover i noticed that if you charge while turned off it does not get hot
itti_sam said:
yes i noticed it get warm to hot-ish
isn't that bad for the battery?
moreover i noticed that if you charge while turned off it does not get hot
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That's normal because you're not using it, if using while charging it will be hot as your running apps, tasks etc... at the same time. This will increase the heat as sensors will be running also.
Has anyone tried to use other cables that has the same turbo charge effect like the included cable? The included cable is too short, usually I use 2 meters long cable.
I have tried the baseus 5A 40W cable but it only support quick charging and not turbo.
I've tested charging wattage using original 33W charger and original USB cable via specialized USB tester, and I noticed it provides only 25W (about 9.6V/2.65A). It shows "Turbo Charge" indeed, but it's still only 75% efficient. Anyone care to explain this? Is this normal? I've read that only Zoom edition can be charged at 33W, so I expected non-Zoom edition will charge at least with 30W. I tried two other USB cables, and still only 25W. Later today I will try to charge it with Blitzwolf 30W PD charger and see how it goes with that one...
I haven't really tested charge speeds. So far the battery life has been exceptional and the main reason I opted for this phone without the high res screen and refresh rate, as see battery as more essential. I would much prefer charging at a slow speed to preserve battery life. A good app for this is AccuBattery. It measures how many mAh's being charged and discharged after each charge and keeps a graph. It will estimate battery health also.
Yeah I know about AccuBattery, I've been using it in the past. But a real physical tester device is always more precise. I do sw/hw development for a living so I know for a fact. Indeed, battery life is very good because optimized MIUI and pretty big battery, but it would be even better if charging speed was also up to the specs. Meanwhile I've tested charging speed using Blitzwolf 30W PD2.0 charger (K30Pro should support PD3.0 and be backward compatible), and situation is even worse - only about 15-16W at QC3.0 I believe. So no Turbo Charge was initiated. I mean 25W with original charger is still good, but I expected advertised charging speed. I'll do more tests when I catch some time.
Thats normal, because it don't charge all the time with 30W. Compare it with WARP Charge 30T it is faster. OnePlus 8 got 30W and 4300 mAh, F2 Pro is faster with bigger bettery but it's almost the same.
How old is your Blitzwolf charger?
I know it shouldn't charge @30W above 80-90%, but sure it should at 20-ish where I'm at about now. It's also not even cool to the touch, so there's no apparent reason to slow it to 25W. My Blitzwolf charger is about a year old, but I only used it couple of times, so it should be as good as new.
itti_sam said:
yes i noticed it get warm to hot-ish
isn't that bad for the battery?
moreover i noticed that if you charge while turned off it does not get hot
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Batteries don't like heat but it is actively monitored and it will slow down charging when it crosses temperature threshold.
That's why I mentioned my phone is not even cool to the touch (let alone hot), so my case is not temperature related. I'll try to charge it while turned off, though it was pretty much in idle doing nothing when I did the test, ie. not stressed at all by any factor. All in all, I mean if everyone else gets 25W out of original charger, I won't bother anymore. Also, if it charges from 10-90% in around 1 hour, I won't waste any more time on this either, since it's good enough for me. I was just curious why it charges at 25W, when 30W (and 33W for Zoom edition) was advertised. Altough it wouldn't be the first time something was advertised at launch, and not achievable in real-case scenario.
Burs said:
I'll try to charge it while turned off...
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Fun fact: phone doesn't charge when powered off?! That's a first. Is it just me, or am I getting too old? For the whole time I'm talking about my Redmi, not to confuse it with Poco, if that matters at all. Maybe Poco works differently.
On my Huawei device you also can not turn off an charge but this starts with Android 10.
takes about 1 hour and 20 minutes for me, I think the high temperature here, summer season, is the reason for this slow charging speed.
From 20-100% in about an hour. Few minutes less actually. Battery is big, that's all ok.
F2 turn off and are dead with 0% (can't turn on). Timer 60 min. and after 60 min. I got 96% with original charger. The phone don't turn on, like it always do.
@Burs a friend told me "on my Anker charger I only can use PD over the third usb port, with the type c port it will charge over QC 3.0 and not over PD" maybe thats why you get ~16W?
When my Redmi was turned off completey, it was hooked up to my USB tester for about a minute. I doubt it would trigger after some minutes, and only then start charging. For the whole time it was connected, I was getting 5V / 0.015A readings on the display. That's pretty much USB tester drawing the power from the phone battery, not the charger! So that would mean charging was completely disabled making the phone behave as a power bank lol. Weird enough, right?
My Blitzwolf charger has only two ports. One PD2.0 (USB-C) and one QC3.0 (USB-A). I've tried three sets of USB cables (one even 5A) on both ports, and best I could get out of it was about 15W. I think I'll have to order another one with PD3.0 and Turbo Charge compatibility.
Heh I'm planning on just using my old 1A slow chargers because they're dotted around the house and work, will probably not even plug fast charger in. Magnetic cables are just so convenient.
I have the Samsung 25w charger, and when using it it appears the phone will only either cable charge or superfast charge. It wont also fast charge. I want to maximize the battery life span of the phone, and cable charging is inconveniently slow, and I figured that fast charging would be a happy medium between that and maxing it out. I was under the impression that it's the phone that dictates the rate of charge it will accept from the brick, and the brick only determines the maximum deliverable current. If I understand correctly, we can use samsung's 45w charger, but the phone will obviously only allow 25w from it. I'm puzzled why when using the 25w charger the phone can't just accept 15w when set to only fast charge. Is this a bug?
Hi,
You might plug in your phone, Go to Parameters, Section Battery, Advanced Battery, and activate Super charge and superfast charge in order using fast and supercharge with your 45W charger !
Yes, I've done that. The 25w charger will only super fast charge, but won't just fast charge. I would have thought it could either one, whichever I have it set to do.
if you want fast charge ..... deactivate superfast charge should be the solution ! Isn't it ?
Probably a firmware/software glitch.
Fast charging will not enable if battery temp is too low.
To avoid Li plating the battery temp should be a minimum of 72°F or higher, the preferred minimum is 80°F.
Using the 45 watt brick may shorten battery life.
Fast charging with the 25 watt brick appears to do little damage.
Li's prefer brief, frequent midrange charges ie 40-65%. Avoid discharging below 30% and charging beyond 90% although 80% is a better top limit.
fission6606 said:
if you want fast charge ..... deactivate superfast charge should be the solution ! Isn't it ?
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Click to collapse
No, if you only activate fast charge (with superfast deactivated) and use the 25w brick, the notification in the shade says cable charging, and that takes like 2hrs to charge the phone.
ac42 said:
No, if you only activate fast charge (with superfast deactivated) and use the 25w brick, the notification in the shade says cable charging, and that takes like 2hrs to charge the phone.
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Click to collapse
That doesn't sound like fast charging is active. It should gain about 2%@minute through most of its range except the top end where it goes to about 1%@minute.
When this doesn't work correctly it's a true pain to troubleshoot. My 10+ started dropping out of fast charging prematurely. A new 25 watt brick/cable and trying a lot of other remedies still hasn't fully restored it.
I'm curious if anyone here has a 25w brick that could confirm if this behavior is present globally, or if this is something just on my device? Only activate fast charging in the battery settings, plug the phone in with the 25w charger, and look in the notification shade and see what the charge rate is tagged as. I'd be grateful if someone would confirm this.
blackhawk said:
Probably a firmware/software glitch.
Fast charging will not enable if battery temp is too low.
To avoid Li plating the battery temp should be a minimum of 72°F or higher, the preferred minimum is 80°F.
Using the 45 watt brick may shorten battery life.
Fast charging with the 25 watt brick appears to do little damage.
Li's prefer brief, frequent midrange charges ie 40-65%. Avoid discharging below 30% and charging beyond 90% although 80% is a better top limit.
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Click to collapse
I have noted that you practise the same charging procedures as I have done for several years (and you obviously have done as well). With my Note9 and S8 + I used to not let it drop below 40% if I can avoid it and also not go above 80%. All this is fine and most of this we all probably learned from Battery University and Isadore Buchmann. That all said, and I am really not sure if I am keeping this phone - Decision today or tomorrow - my question comes to the matter of calibration. When I received this phone some 14 days ago I charged it to 100% but thereafter did not run it down to zero but kept it above 40% the whole time. The question I put to you (and others can learn from your response) is there a need to "calibrate" the device initially (ie run down to say 10% for example once a month) as was suggested by Buchmann probably a few years ago?
blackhawk said:
That doesn't sound like fast charging is active. It should gain about 2%@minute through most of its range except the top end where it goes to about 1%@minute.
When this doesn't work correctly it's a true pain to troubleshoot. My 10+ started dropping out of fast charging prematurely. A new 25 watt brick/cable and trying a lot of other remedies still hasn't fully restored it.
Click to expand...
Click to collapse
You and I discussed this earlier. Do you think it is the port that has become damaged? Part of the reason for my getting the wireless charger is my Note 9 is very erratic when it comes to fast charging. Cleaning out the port with a toothbrush/compressed air. rebooting...wiping cache partition, new cable etc never truly fixed it for me. I do feel that when first plugging in the S21 ultra (before going wireless) the connection seemed a lot firmer.
ac42 said:
I'm curious if anyone here has a 25w brick that could confirm if this behavior is present globally, or if this is something just on my device?
Click to expand...
Click to collapse
It does appear to be related to the Samsung 25w brick. I have the one that came with my S20U. It will "Super fast charge" my S21U no problem. If I turn off super fast charging in the phone, it only says "charging" when plugged in, and with my phone @ 65%, it said it would take well over an hour to charge (forgot the exact time). Then I took my phone w/o changing any settings to a generic 18w QC3 brick, and it said "fast charging", and said it would take 44 mins to complete.
Ive seen this same type of issue as well with 2 different chargers. One charger (45w pd) will fast charge with super turned on but not fast, notification only says fast charge. The second (39w qc3) will fast charge with regular fast charging turned on, but turning on super does nothing. Charge times are the same with both chargers on regular charging and fast, with 0 differemce between fast charging and super.
peterg21 said:
You and I discussed this earlier. Do you think it is the port that has become damaged? Part of the reason for my getting the wireless charger is my Note 9 is very erratic when it comes to fast charging. Cleaning out the port with a toothbrush/compressed air. rebooting...wiping cache partition, new cable etc never truly fixed it for me. I do feel that when first plugging in the S21 ultra (before going wireless) the connection seemed a lot firmer.
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Click to collapse
I'm as clueless as you at this point unfortunately.
My port is good, cable/charger, tried hard reset, cleared system/akp caches, did the recall thing and so on.
I'm wondering if it's a battery fault. Do older batteries go into fast charging the same as newer ones? It's almost as if it's throttling the fast charging, sometimes it's full bore then it drops out to 1%@45 seconds then to 1%@minute.
Or is it a calibration ie it thinks it's at 90% when it's only at 70%?
The only I haven't done is a factory reset, lol.
All this started one night when it was slow charged to 100%. WTF?
TFF the curse of technological Beast!
Guess I'll try recall again.
dscline said:
It does appear to be related to the Samsung 25w brick. I have the one that came with my S20U. It will "Super fast charge" my S21U no problem. If I turn off super fast charging in the phone, it only says "charging" when plugged in, and with my phone @ 65%, it said it would take well over an hour to charge (forgot the exact time). Then I took my phone w/o changing any settings to a generic 18w QC3 brick, and it said "fast charging", and said it would take 44 mins to complete.
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Right on. Sounds like it's not just my phone. That's a relief. It's puzzling why the phone can't also fast charge with that brick. Perhaps it's simply a bug that Samsung either never noticed, or it isn't a priority to them. It would be nice if we could take advantage of the different settings without having to have two different bricks sitting around.
I think I figured it out. The fast charging setting is for the old classic fast charger. If you connect your phone to that one, you'll see it says it's fast charging. If you don't have fast charging turned on, it'll prompt you to turn it on to use that charger at it's maximum capability. If you use one of the newer Samsung C to C bricks, it's going to do the super fast charging.
I am currently using this Baseus charging plug and get full range of charging options - fast / super fast.
Thought I would try some I have hanging around before buying a Samsung one.
Baseus USB C Charger 120 W with GaN Tech Power Delivery USB-C Power Supply Compatible with MacBook Pro/Air, iPad Pro, iPhone 12 Pro Max/11 Pro Max/XS Max, USB C Laptops, Surface Pro, Galaxy, Huawei: Amazon.de: Computer & Accessories
Baseus USB C Charger 120 W with GaN Tech Power Delivery USB-C Power Supply Compatible with MacBook Pro/Air, iPad Pro, iPhone 12 Pro Max/11 Pro Max/XS Max, USB C Laptops, Surface Pro, Galaxy, Huawei: Amazon.de: Computer & Accessories
www.amazon.de
a.gordon1989 said:
Ive seen this same type of issue as well with 2 different chargers. One charger (45w pd) will fast charge with super turned on but not fast, notification only says fast charge. The second (39w qc3) will fast charge with regular fast charging turned on, but turning on super does nothing. Charge times are the same with both chargers on regular charging and fast, with 0 differemce between fast charging and super.
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XDA just covered this in their article:
Fast Charging Explained: The slowest to the fastest Fast Charging technologies
Curious about fast charging? Here's everything you need to know about fast wired charging standards and how to pick the best charger!
www.xda-developers.com
Unless a charger has USB-PD PPS they will only FAST Charge @ 18w with fast charge on (super fast on/off wont matter as it will be off). If you are getting super fast charging then you are getting the expected 25w which is totally fine and not bad for battery. You will get super fast with the samsung 25w adapter and maybe the previous series 45w adapter.
I have a 45W USB-C PD port as part of an Anker PowerPort and also the 18W charger that came with my Pixel 5. Would I notice much of an improvement in charging speed or integrity/longevity of the battery by purchasing Samsung's 25W charger?
Tmel14 said:
I have a 45W USB-C PD port as part of an Anker PowerPort and also the 18W charger that came with my Pixel 5. Would I notice much of an improvement in charging speed or integrity/longevity of the battery by purchasing Samsung's 25W charger?
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No huge charging improvement. It most likely will degrade the battery faster.
I use only the Samsung 25w bricks because they are known good and relatively cheap.
Just picked up a 25w brick and cable for $20.
The amount of trouble a defective charging hardware can cause means I won't consider using 3rd party chargers/cables for fast charging.
Fast charging is a nightmare to troubleshoot as I'm learning now... will see if a couple full 100-0% charge cycles get it or not.
It's time consuming and irritating.
thegr8anand said:
XDA just covered this in their article:
Fast Charging Explained: The slowest to the fastest Fast Charging technologies
Curious about fast charging? Here's everything you need to know about fast wired charging standards and how to pick the best charger!
www.xda-developers.com
Unless a charger has USB-PD PPS they will only FAST Charge @ 18w with fast charge on (super fast on/off wont matter as it will be off). If you are getting super fast charging then you are getting the expected 25w which is totally fine and not bad for battery. You will get super fast with the samsung 25w adapter and maybe the previous series 45w adapter.
Click to expand...
Click to collapse
Thanks for posting the link to that article. It clears some things up. Charging standards have become rather confusing with all the proprietary standards. This makes me feel more comfortable using the 25w super fast setting on the s21 ultra.