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[Q] Charging difference between computer & adaptor

Is there any difference between (USB) charging from computer (Laptop) and charging directly from AC adapter (Samsung provided)?
Because, I was using my phone more than two month with SetCPU for more batter life, and I was able to use 3 or 4 days. But just yesterday I charged from my laptop and was full 100%. But after 21 hours I got 15% battery renaming. It’s seems like drain battery after i charged from Laptop. Anyway I will try to charge today from AC adapter which is Samsung provided with phone.
May I know if any one experienced this.

musheercmr said:
Is there any difference between (USB) charging from computer (Laptop) and charging directly from AC adapter (Samsung provided)?
Because, I was using my phone more than two month with SetCPU for more batter life, and I was able to use 3 or 4 days. But just yesterday I charged from my laptop and was full 100%. But after 21 hours I got 15% battery renaming. It’s seems like drain battery after i charged from Laptop. Anyway I will try to charge today from AC adapter which is Samsung provided with phone.
May I know if any one experienced this.
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The only visible difference should be in charging time - AC adapter should do it much faster providing the current of up to 1A (1000mA), much less then that to be expected from PC USB port.
I'd rather search for some rogue app draining the battery, maybe betterbatterystats would be a good place to start.

there wont be any dfference, the battery will get a charge from either but usb as mentioned wil ltake longer to charge

if i got 21hrs from my battery i would not be asking ANY questions!!..
musheercmr said:
Is there any difference between (USB) charging from computer (Laptop) and charging directly from AC adapter (Samsung provided)?
Because, I was using my phone more than two month with SetCPU for more batter life, and I was able to use 3 or 4 days. But just yesterday I charged from my laptop and was full 100%. But after 21 hours I got 15% battery renaming. It’s seems like drain battery after i charged from Laptop. Anyway I will try to charge today from AC adapter which is Samsung provided with phone.
May I know if any one experienced this.
Click to expand...
Click to collapse

USB ports are low power
your wall plug has a higher output than your computer USB port
PC USB = 5v 0.5amps
wall plug = 5v 1amp
so a wall plug will charger faster.

use SetCPU governor, I am sure you will get 3 to 4 days (moderate usage). same as mine.
My final finding; If we charge through PC-USB, it will take time to charge and same time, will discharge rapidly. because I charge my phone yesterday with AC-adapter and now my batter level is 13 hours with 95%. While I charge from PC-USB it was 20 hours with 15%. (all time are in moderated usage, and no any apps are not installed during this period)
I don't know how this, but this is my experiences.

I get the same results that's why I don't charge it through my usb port.

I agree with your conclusion that low-power charging just doesn't last on the Note. I was travelling and mistakenly took the wall adapter for my Plantronics BT headset instead of the Sammy adapter. It charges basically at the same rate as the computer usb. It took forever to charge, which was expected, but drained EXTREMELY quickly (10% / hour with almost no usage). By the end of the trip I was keeping it plugged into the charger whenever possible.
Back home on my original charger the phone is behaving like normal again. (84% after 8 hours with BT on and about 20 minutes of talk time / display on)

Charging with the fast charger mainly overnight

Hey guys. So I Was wondering whether it damages the battery to charge with the fast charger. If so, should I charge with a standard charger instead?
I was also wondering if it is ok to charge the phone overnight with the fast charger.
Thanks!

Galaxy Note 5 includes auto-discharged feature, even with fast charger. I dont know clearly what your Galaxy Note 5 model is, mine is 9208. When I try to charge with cable charger or fast charger, my phone automatically discharges with all charger when fully charged and LED notification turns to green.
I have not tested with wireless charger so I have no idea.

Slow Charging 9.7" Tab S2...

Hey guys,
I haven't used my Galaxy Tab S2 in a while now. When I plugged it in it was at 0%. I used "a" (possibly not original that came with box) OEM 2.0A Samsung Charger + Note 5/Samsung Official Cable to charge my tablet. It has only gone up by 5% in the past 30 minutes.
Also when it was at 0% it said it'd take 7hr 12min to fully charge.
Is this normal when the tablet has not been used in a long time, or am I possibly looking at a bad charger/cable as the charger and cable charge my Note 5 just fine at the normal (non-fast charge) speed where it charges my phone fully in just over 1hr 30 min.
If someone could help me out to resolve this I'd be grateful.
Thanks! :laugh:

Don't think the charger and cable are faulty as they work on your mobile. Generally whenever I charge my Samsung galaxy tab s2 using a different charger it shows a notification if the charger plugged in is slow. If it didn't show this I don't see why it would take so long other than the charger your using has a lower output causing it to take a lot longer than usual to charge.

Every android device I have will sometimes not charge fast enough - it doesn't matter what charger I'm using. If I catch that the charge is slow I just unplug it and replug it a it'll be normal again. I think the "smart charge" goes crazy sometimes.

I had the same problem on the tab s2 8''. It was because the motherboard broke. They fixed it under warranty.
When I had this problem I couldn't attach any external device (usb, playstation controller) through USB. Try if you can

I don't have the original charger anymore to compare on my 9.7. I use anker potable batteries to be free of wall sockets. It isn't 2.0. In battery monitor widget, really good app, shows charge anywhere from 1200-1600mA 20% per hour while in use during charging. 5 hours total. I think with screen off I get 30%. I get 10 hours of screen on time zero loss with it off over night. Using 5.1
It could be the motherboard. I know with laptops charging starts to mess up a few weeks before it no longer works at. The connection between the USB and board weakens over time/use.

moustafasadek11 said:
Hey guys,
I haven't used my Galaxy Tab S2 in a while now. When I plugged it in it was at 0%. I used "a" (possibly not original that came with box) OEM 2.0A Samsung Charger + Note 5/Samsung Official Cable to charge my tablet. It has only gone up by 5% in the past 30 minutes.
Also when it was at 0% it said it'd take 7hr 12min to fully charge.
Is this normal when the tablet has not been used in a long time, or am I possibly looking at a bad charger/cable as the charger and cable charge my Note 5 just fine at the normal (non-fast charge) speed where it charges my phone fully in just over 1hr 30 min.
If someone could help me out to resolve this I'd be grateful.
Thanks! :laugh:
Click to expand...
Click to collapse
Sounds normal. The big Lion batteries in these devices are just weird at time. Running one down to 0 is a good way to kill the battery permanently. Let it charge slowly and then keep it above 20-30% from now on. Should improve over time.

I think its a myth you shouldn't let the battery get low. As long as the battery itself says I'm at zero at the correct voltage then zero is perfectly fine. I'm not an expert here but at 5% battery I'm at 3.6v and will turn off in a few minutes after that. I think batteries are manufactured to safely go down to 3.2 before saying no more. Need to charge.

battery charge rate question

My Nokia 8 shows charging on the lock screen and after few minutes it shows the time left to fully charge.
Just then I noticed my phone was on 19% and lock screen was on when I plugged in the charger. On the lock screen above the fingerprint icon it read charging rapidly and then it changed to charging slowly and went back and forth a couple of times, then went just said charging. I can replicate it 100%. Does what it says on the screen really mean it was charging slow and fast and fluctuating in between it?
Phone running oreo beta latest and using stock cable and charger that was supplied. Ampere shows 2910m.
What do you guys make of it.
From 19% to full charge the lock screen shows 3hours. Is that right for Quick Charge?
TIA

I have exactly the same experience with the supplied charger and other QC 3.0 chargers. I tested all the chargers in my house and found my old QC 2.0 Samsung charger is able to constantly rapid charge the phone. I have not yet been able to test of it is actually faster, will update when my battery runs out.

The same here.
I have a QC 3.0 certified charger and it is not showing fast or rapid charge. Looks like there is some issue with Nokia. It was exactly the same using Nougat.

Was able to do further testing and it seems the phone is quick charging with the supplied charger, or any other QC 3.0 charger. The supplied charger was 20 minutes quicker than my old Samsung QC 2.0 charger.
There definitely is a bug in correctly displaying charging rate when connected to QC 3.0 chargers. Also the charging estimates are about twice as high as they should be. The phone can fully charge around an hour and a half, but estimate states three plus hours.
Looks like a couple other people have noticed this issue on the Nokia support forums.

wireless charger very slow

hi guys, i'm from a 8 note and now i'm using sasung's original 8 wireless wireless charger to plow my new 9 notes, but i'm noticing that it's really slow, is it normal? I have the impression that even imposed fast charge does not change anything, do you have any suggestions?

im also using the wireless charger that I received from Samsung in 2018 for the note 8 promotion.
I can confirm that fast wireless charing takes 2 hours + on the note 9 and up to 3 hours when using slow wireless charging.
Also, keep in mind we have a way bigger battery so i am not surprised seeing these charge times compared to the note 8. I know Samsung released a new wireless charger so we might see better charge times on that??

I use the wireless charger I bought for my Note 4 for $12. It charges my phone in 2 hours from 50%, which is about double than using the cord. It doesn't say slow, or fast, just charging.

I use a Samsung wireless charger I had with a kit when I bought my S8+ and it says "Fast charging wireless" I believe. I use it to charge over night though so not sure how long it takes.

I use the ADATA CW0100 charger with Sony UCH10 QC2.0 Charger - the phone says it's fast charging but it takes about 3 hours to go from 11% to ~100% (with a clear case + bus card in between on the back). The interesting issue is which power brick I use. WIth Samsung's Adaptive Fast Charge power brick, I kept getting a charging paused error in the previous firmware, unless I have the phone placed in a very specific position without a case. With the update (N960FXXU2ARI9), it no longer gives me the error even if I charge it with a case, but the charging seems a bit more noisy in comparison to the UCH10 (there's no fans, it sounds like the inductor making a pulsing clicking sound). Will be checking its charging speed.
EDIT: I spoke to soon, it started the charging paused error again after I posted here. If you want to use third-party wireless chargers for fast charging, please use QC2.0/3.0 chargers instead of Samsung's own.