samsung galaxy s9 and battery charge slow - Samsung Galaxy S9 Questions & Answers

Hi everyone. I noticed that the Galaxy S9, with the screen on and with automatic brightness at 50%, fails to charge the battery and the charge drops slowly but falls. I did the test with amps and known, always with the same brightness, that the charge, when it is under half, so when the delivery should be about 2200 mah, is around 800 .....
I did these tests with 2 different phones.
instead with galaxy s8 the recharge is constant even when the screen is on and over 2200 mah ...
someone who has tested and would definitely confirm could tell me why this difference that I think is a problem?
thank you

Related

Info on new Battery 3.8V of this phone

The battery of my new note 3 neo is different from the battery of my galaxy nexus,
It's 3.8V instead of 3.7V.
1) I am wondering if can be a problem if I charge Note 3 Neo with an old standard charger for Galaxy Nexus.
2) The Note 3 Neo charger is 2Ah, is it better if I charge the battery with my old 750mAh lipo battery charger??
Thank you.
While, it may seem to work, it is not recommended to use a charger for a battery of different configuration, as in the long run, it will damage the battery.
i think you should avoid using other chargers ....firstly its gonna take forever to charge from that charger because of its capacity secondly i have noticed a strange thing that when i connect my phone to some of the older charger, my battery starts to decrease over the time instead of increasing....its like the charger is sucking juice out of my phone....seems strange but thats what happened with me?...so avoid....

[Q] Accidentally drained new S Tab, consequences?

ok, so i just got the Galaxy Tab S, and a friend of mine, who has one, told me i need to let it drain before the first full charge.
idiot that i am i just ran with it without checking.
so now pretty much wherever i look i see ppl saying u should give a full charge first b4 any use.
hell it even says so in the quick start guide, but i was too excited to check
anyway i drained it and started a full recharge, but now i'm worried this back-asswards treatment might have done something to the battery.
should i be worried?
any possible effects on battery capacity, life, or charge speed?
BTW, i'm charging right now and the charge speed is INCREDIBLY slow (like only 50% OVERNIGHT!)
not using the official charger so i'm being optimistic and blaming that, but it's 5V 2A compared to the original's 5.3V 2A, which seems to me like it shouldn't be a problem,
but what do i know ?
TL;DR
went retard and drained my brand new Galaxy Tab S instead of giving a full first recharge, now worried about adverse effects to battery capacity, life, or charge speed
thanks !
A full charge is around 4+hrs for the 8.5" and 5+hrs for the 10.5" , only 50% in 7-8 hours is slow, the Tab S has detected that you are not using the Samsung charger and is slow charging your tablet.
The free app below will show you how fast you Tab S is charging, you have to keep pressing refresh on the free version, look at the average ma, not the maximum one as it only shows the maximum charge rate of you tablet.
My 10.5" charges at between 1500-1600mah, up to 80% after that the ma will keep reducing till the tablet hits 100% and stop charging.
https://play.google.com/store/apps/details?id=com.abmantis.galaxychargingcurrent.free&hl=en
EDIT: discharging to 0% every 6 months or so will help calibrate the battery gauge, but a few Tab S owners whose tablets battery accidentally went below 0% which can cause the battery low-voltage protection to kick in and disconnect the battery, which means you have to send it back to Samsung or an tablet/phone repair shop who can reset the battery protection.
John.

Charging Speed?

I was just wondering, what charging speeds are you guys getting? Bought this phone a week ago from tmobile and it says it takes approximately an hour and a half to 'fast' charge from 0-100%. Seems a bit slow coming from an S6 edge and I'm also getting terrible SOT so I'm wondering if it's defective
I have the exynos Duos model. It takes about the same amount to charge mine full.
I have not tracked SOT's yet. But I am happy that it lasts 2 days on one charge.
N930FD here it takes about 1h to fully charge from 5% (the lowest I've been) to 100%. It can last up to two days from 100% for me too.
the charge time should be longer the S6 only had a 2600mah battery, while the Note 7 has a 3500mah battery so really it is about a 40% bigger battery.
the screen is bigger so it will draw more power but really the extra battery should more than compensate for the screen size increase, but then it also comes down to how much power draw difference there is from the 2 CPU's. also I believe a few people have said there is worse battery performance with a snapdragon models over the exynos chips, so that could also be a factor if the devices have different brands of chip.

battery quality/durability

Hi everyone,
does anybody know if the Moto Z2 force also has the same battery issue as stated in this thread for the Moto Z? https://forum.xda-developers.com/moto-z/help/issue-2-crazy-battery-behaviours-t3680766
Could somebody check if this batt_health binary is also excluded from running on unlocked bootloaders on our device or if it's even existing?
I definitely had the worsening capacity problem and the inability to boot phone under 30% charge problem on my Moto Z.
Kind regards
Me too (on old Griffin).
I arrived to be unable to power on up to 50% of battery (and Accubattery reported a capacity as low as 900mAh ) except that on bootloader mode...
And when I left it to an assistance center to change battery... they destroyed my screen...
I hope the quality on Nash would be better... (battery are different anyway...).
I will check into if that is working or not, currently estimated battery mAh is near correct...
Edit: XDA image derp: will show soon. Accubattery estimates near 2600 mAh (2592.2)
Edit 2: yes, it's there and populated. System/bin/batt_health
Uzephi said:
...
Edit: XDA image derp: will show soon. Accubattery estimates near 2600 mAh (2592.2)
...
Click to expand...
Click to collapse
On mine are a bit higher: about 2630-2650 mAh with wireless charging by Incipio Mod and about 2710-2750 mAh with a (good) wired & "not-so-fast" charger...
Since of my experiences I think your lower values are because of stock charger doing fast charging...
enetec said:
On mine are a bit higher: about 2630-2650 mAh with wireless charging by Incipio Mod and about 2710-2750 mAh with a (good) wired & "not-so-fast" charger...
Since of my experiences I think your lower values are because of stock charger doing fast charging...
Click to expand...
Click to collapse
That was USB charging. I left it on my Linux box for the day, so it was slow charging. Below is overnight fast charger estimate.
Uzephi said:
That was USB charging. I left it on my Linux box for the day, so it was slow charging. Below is overnight fast charger estimate.
Click to expand...
Click to collapse
Well... one single charge with only 33% charged is not so significative (on Z2 partial charging often reports BIG battery estimates... I've just done one of about 25% which reports over 4,000 mAh... :laugh: )
Go with at least a week of various recharge of at least 65-75% to have significative results ...
When my old Z begun to have a dead battery I was able to charge up to 1,500 mAh with a slow charger BUT less than 1,000 mAh with its fast one...
enetec said:
Well... one single charge with only 33% charged is not so significative (on Z2 partial charging often reports BIG battery estimates... I've just done one of about 25% which reports over 4,000 mAh... :laugh: )
Go with at least a week of various recharge of at least 65-75% to have significative results ...
When my old Z begun to have a dead battery I was able to charge up to 1,500 mAh with a slow charger BUT less than 1,000 mAh with its fast one...
Click to expand...
Click to collapse
My phone barely goes under 50% though...
It's better for batteries of this makeup to stay between 50% and 80%. Anything out of that range will drastically affect battery longevity. EG: my VZW M7, I got it pretty much the week it came out. Verizon had a BOGO deal, so the wife got one as well. She always drained it to 10% before charging to full. Hers started seeing shorter battery life after about a year when my battery was fine and it finally went out due to the known emmc defect three years later.
I try to make sure my phone is unplugged around 80% just so battery stats reset like they are supposed to after being taken off the charger over 80%.
In essence, charging 65-75% in one cycle hurts your battery if you're looking to keep the device for awhile since it is a pain in the ass to swap batteries now.
I know, but I was only talking about statistics point of view...
In fact I prefer slow charge whenever is possible and I follow Accubattery hints as more as possible...

Charging speed

To power up, you consume Red Bull. But your phone just needs its adaptive fast charger. Rate this thread to express how quickly the Samsung Galaxy S10+ can charge. A higher rating indicates that it charges extremely fast.
Then, drop a comment if you have anything to add!
They need to step it up to 12v 25w at a minimum. It's not terrible as it is, but knowing how much better it could be is a bit of a kick in the shin... especially considering the expense and the fact it's supposed to represent the best of the Galaxy line.
It's good, yet still somehow disappointing.
Haadkoe said:
They need to step it up to 12v 25w at a minimum. It's not terrible as it is, but knowing how much better it could be is a bit of a kick in the shin... especially considering the expense and the fact it's supposed to represent the best of the Galaxy line.
It's good, yet still somehow disappointing.
Click to expand...
Click to collapse
Considering the competition offers must faster charging, Samsung should let us charge at 25W just like the s10 5G variant will be able to.
It's actually slow as FF. Charging this device (especially with screen on) is a nightmare. During the day, with auto brightness and mostly bright environment hitting ~15-20% in 30 minutes. That's ridiculous.
My moto x pure edition 2015, charges with turbo charge quicker than this s10+ fast charge.
I'm happy with the charging speed, fast enough to charge and not too fast to deplete the battery life!
hinxnz said:
I'm happy with the charging speed, fast enough to charge and not too fast to deplete the battery life!
Click to expand...
Click to collapse
Same here 1.5hr or less for a 4000+ mhz battery is satisfactory.
The Huawei Mate 20 Pro used to charge from 5% to 100% in 50 minutes, but the overall performance is still far from S10plus. I struggled to get 8+ hours SOT without standby on the Mate 20Pro, whereas with the S10 Plus ive had a steady 9hrs and even achieving 12hrs SOT and 20hrs standby.
I can charge my S10+ running the AT&T firmware here with a LG fast charger in 1 hour 24 minutes coming from 19%
Recently i purchased Samsung 25w charger but its take same time like bundle 15w charger
what's better for the battery, shorter charge/less heat from 50% or 1 1/2 hour full charge from 20%?

			
				
what's better or does it make a difference?
1. recharge battery when 50%?
2. recharge battery when 20%?

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