Tab A (2019, 10.1) | SM-T510 - Max Charging current - Samsung Galaxy Tab A series Questions & Answers

So im a little confused as to what the max charging current of the tablet is.
The status page in the settings says its rated for 5 V; 1.55 A (which if true is a little disappointing) but I plugged it into a macbook charger and Ampere measured it at a maximum of 1820 mA.
So im not really sure what the actual max supported charging current is, I was hoping it would be 2A+.
Any ideas?

Related

Does Xiaomi Redmi 4 Prime/Pro support Qualcomm fast charging 3.0?

If yes, Then let me know which brand of charger should i buy!
No.
I think it only supports QC 2.0, though the QC 2.0 charger does not come out of the box. But imo, who needs fast charging when the battery life can last up to 2-3 days with this phone.
in it's specs sheet in gsmarena quick charge 3.0 is listed. That's why i asked.
anyway, what's the best quick charge 2.0 charger out there? and will that charge the device faster than the original charger?
Jaisun said:
in it's specs sheet in gsmarena quick charge 3.0 is listed. That's why i asked.
anyway, what's the best quick charge 2.0 charger out there? and will that charge the device faster than the original charger?
Click to expand...
Click to collapse
The 625 snapdragon processor does support Quick Charge 3.0, but Xiaomi prohibits using it i guess to cut cost, i know some user who try to use QC 3.0 on this phone but it doesn't work, to be honest i'm also not sure about QC 2.0, my advice is you should try testing it first by borrowing QC 2.0 charger with some of your friends/relatives that has QC 2.0 charger before attempting to buy one.
Flynhx said:
The 625 snapdragon processor does support Quick Charge 3.0, but Xiaomi prohibits using it i guess to cut cost, i know some user who try to use QC 3.0 on this phone but it doesn't work, to be honest i'm also not sure about QC 2.0, my advice is you should try testing it first by borrowing QC 2.0 charger with some of your friends/relatives that has QC 2.0 charger before attempting to buy one.
Click to expand...
Click to collapse
No QC 2.0 support for me, tested with new xiaomi powerbank 10000mAh, ampere show max usb current 500 mAh instead of 2000 mAh. However from measurement I can get 1700-2000mAh so still charging fast enough.
Redmi 4 supports Fast Charging (i.e. about 2A), not any form of Quick Charge. The chipset supports it, but as Xiaomi have decided not to pay Qualcomm the royalties they charge for QC, it's disabled at a low level in the phone. It might be possible to enable it via custom kernel, but I don't think it's been done yet if so.
dels07 said:
No QC 2.0 support for me, tested with new xiaomi powerbank 10000mAh, ampere show max usb current 500 mAh instead of 2000 mAh. However from measurement I can get 1700-2000mAh so still charging fast enough.
Click to expand...
Click to collapse
you mean that from the measurement you're getting a CURRENT reading of 1.700 to 2.000 Amps, right? Because mAh is the capacity measurement while A or mA is the current measurement?
To be on topic, the hardware inside (global version - snapdragon) and the battery support QC v1-3 specs but quickcharge is disabled.
The phone will charge at 1.8A or 1800 mA for about 10 minutes between 20% and 55%. battery capacity.
the current raise up while you changed to a qc 3.0 adapter.
goe2car said:
the current raise up while you changed to a qc 3.0 adapter.
Click to expand...
Click to collapse
CURRENT WILL NOT RAISE ABOVE 2A by now. ONLY VOLTAGE WILL BE INCREASE, but with decreasing current.
I tested a bit :
with QC 3 compactible Aukey PA-T16 charger, Ampere shows 2030mA
with Anker 40W 5 port charger Ampere shows 1830mA.
I have a Redmi 4 (standard edition) and I also have a USB Ammeter/Voltmeter which I can use to measure actual voltage and current flow into the device.
Using a standard 2A charger, the device accepts 4.9-5.1v (average 5.0v) at 1.5A (1500ma), and rarely exceeds this due to the voltage drop of the charger circuit /transformer in the wall plug.
Using a Quick Charge 3.0 charger (Capable of 5v, 9v, 12v and dynamically 5v-12v for QC3.0), I was able to charge the Redmi 4 at 6.2v/2.1A. The peak voltage was 6.24V and peak current 2.4A (momentary).
The Redmi 4 will charge at 6.2v and 2.1A with a Quick Charge 3.0 compatible charger when the battery is totally flat. As with all batteries the current slowly decreases as the internal resistance of the battery increases as it charges.
This is 13 Watts of power, 1.7 times higher than the 7.5 watts provided by the included '2A' charger. Thus, while it does not officially have QC3.0 capability, the device is still able to utilise a slight boost from the chipset's compatibility with higher voltages. Realistically, this means you could cut down on the charge time by around 1/3, and even moreso when charging from, for example, 0%-30%.

Mi A1 quick charge module?? [MAGISK]

I was looking for modules to enable quick charge for Mi A1, but all I found was the mistake Xiaomi made during Oreo beta. Is there any modules to enable quick charge for Mi A1, or someone to develop a module using magisk? I've installed Magisk Manager to install Gcam, that's what made me curious. Correct me if I'm wrong in any statement!
Quick charge is generally not a good idea because it lowers the lifespan of the li-ion battery. The stock 10W (2A) charger will charge the battery at 1.5C rate which is already above the recommended standard 1C.
If you are referring to the Qualcomm's Quick charge technology... No.... Except for the obvious kernel and android changes there are also several hardware changes that need to be done for it to be enabled. Also given that 625 is with QC3 you won't really notice that much of a decrease of charging time. We still have pretty good charging times and given that the battery is only 3K it is really not that much of a deal. In the end you'll have 10-15min faster charging. Also at the end of the charging cycle (around 90%) QC is lowered to an ordinary charging, so for small batteries like ours it doesn't really have that much of a use. Also given that our battery is not easily changeable, QC and all types of faster charging lowers the lifespan of the battery significantly and it can go down in less than two years. If it is subjected to regular higher temperatures(>40 degrees Celsius it will start to form copper inside of the battery and will increase its self discharge significantly) it will go down in an less than an year.
Some custom kernels - like moun kernel - have fast charge enabled.
Speed up is not rly high.
Roadwuzel said:
Some custom kernels - like moun kernel - have fast charge enabled.
Speed up is not rly high.
Click to expand...
Click to collapse
Thanks, I'll look into it!
Quick Charge cannot be enabled( or shouldn't be ) on MI A1
Firstly let me clarify, I'm using RR ROM which has Moun Kernel by default, it has USB Fast Charge which is not to be confused with Qcom Quick Charge because it means it will Fast Charge( @10watts ) when on USB, that is plugged on a computer. On Stock ROM it charges very slowly when on USB.
Talking about Qcom Quick Charge, though sd 625 supports it, other hardware such as the battery isnt built to support higher voltages which can potentially damage the phone.
So no Quick Charge on MI A1
barrack1 said:
Quick charge is generally not a good idea because it lowers the lifespan of the li-ion battery. The stock 10W (2A) charger will charge the battery at 1.5C rate which is already above the recommended standard 1C.
Click to expand...
Click to collapse
MiA1 has 3000mAh and supplied [email protected] charger gives 2A only! (I actually do get 2A charging up to 80% SoC).
Therefore, the MiA1 charging is at 2/3 = 0.67C and NOT 1.5C as you state.
For 0.67C, the time for 70% charging is 0.70/0.67 = 1.045hr = 63mins, which I'm getting in practice.
For 1.5C, 70% charging will be in 0.70/1.5 = 28mins!! Not just possible. Nobody, who tried fast charging using higher than 10W charger, has reported anywhere except slight decrease in charging time (for 70% charge).
The LiPo Battery in MiA1 is BN31. There may be a max charging current limitation circuit in BN31. I read somewhere (lost the reference, unable to find again) that 2.2A is the max limit.
In that case we get 0.73C and time for 70% charge will be 0.7/0.73 = 58mins. This HAS been reported using [email protected] at 3A. (BN31 allowing only 2.2A).
Add on Update:
There is one report on slightly faster charging of BN31. The max charging current is estimated to be 2.485A that is at 0.828C.
MiA1 got 0-100% charged in 92mins using One Plus' Dash Charger (not the charger provided which charges at 0.67). This is reported by TelecomTalk.
This is 24% faster than normal.
manabsac said:
MiA1 has 3000mAh and supplied [email protected] charger gives 2A only! (I actually do get 2A charging up to 80% SoC).
Therefore, the MiA1 charging is at 2/3 = 0.67C and NOT 1.5C as you state.
For 0.67C, the time for 70% charging is 0.70/0.67 = 1.045hr = 63mins, which I'm getting in practice.
For 1.5C, 70% charging will be in 0.70/1.5 = 28mins!! Not just possible. Nobody, who tried fast charging using higher than 10W charger, has reported anywhere except slight decrease in charging time (for 70% charge).
The LiPo Battery in MiA1 is BN31. There may be a max charging current limitation circuit in BN31. I read somewhere (lost the reference, unable to find again) that 2.2A is the max limit.
In that case we get 0.73C and time for 70% charge will be 0.7/0.73 = 58mins. This HAS been reported using [email protected] at 3A. (BN31 allowing only 2.2A).
Click to expand...
Click to collapse
You're right that the stock charging rate is 0.67C which is a very moderate charging rate. No idea why the battery still heats up noticeably sometimes during charging. There was a change in the charging icon I think for the Oreo update which gave the erroneous impression that fast charging (>10W) was supported and people started (wrongly) reporting decreased charging times fueling the myth.

Charging speed throttling poor stock thermal values

So the issue is I bought quick charge 3.0 adapter from xiaomi site but it isn't making much difference because stock thermal values are too limiting
It charges 2800 ma while temp is >37 c
2300-2400 at > 39c
After that at 1900
Is there any way to start throttling from 44-45 c
im shocked 2800mA charginig speed in RN7 as it is capable of 18W fast charging only
but well from my experience with different phones is that as the phone going to full charge especially after 85 % i experienced mobile heatup and the charging current drops, but i think your issue may arise during low charge mode as well
first of all charge your screen while keeping display off and after every 15 minutes you can check for the average charging current and temperature for that session via Accubattery easily
by the way which app are you using for charging current
app is not accurate for checking, use USB voltmeter direct to charger to check charging amps,
in a hot country with high temperatures >30C.....then quick charge will throttle faster as battery heats.
mi 2a charger (redmi note 7pro)
even regular 2a charger (with redmi n7pro) thermal throttle.
i put my phone in charging for an hour ago and i checked suddenly and it has charged only 20% (21% to 42%) and after changing charger the charging speed was back on and also the mi charger was hot would be aroung 30 to 35 celcius.

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 LG G8X ThinQ can charge. A higher rating indicates that it charges extremely fast.
Then, drop a comment if you have anything to add!
QC 3 is great, I dont use the wireless charging.
I'm honestly pretty disappointed with the quick charging speed. I had the Essential phone before this and loved the 27w fast charging with USB PD. The G8X charges really slow in comparison. I've tried QC 3.0 adapters and USB PD adapters and just can't find something that I would call "quick" by today's standards.
im using a xiaomi remi note 8 pro charger to quick charge, the one in the box doesn't give me "Fast charge" icon
using the stock usb-c charger, I get pretty good fast charge. wireless is a bit slower but I use it to avoid fast charge anyway to preserve the battery health.
rapido_burrito said:
I'm honestly pretty disappointed with the quick charging speed. I had the Essential phone before this and loved the 27w fast charging with USB PD. The G8X charges really slow in comparison. I've tried QC 3.0 adapters and USB PD adapters and just can't find something that I would call "quick" by today's standards.
Click to expand...
Click to collapse
I agree. It is unstable charging. In my cause power ( A) is jumping, also QC3/unknow is swapping very ofter. Just connect USB meter. Strange. There is an option for save charge, but On/Off causes no difference to me.
ive tried 5 different chargers but this phone does not charge more than 10w on any chargers QC 2.0, 3.0 AND 4.0+ usb AtoC CtoC tested on usb tester. it will spike to 13w maximum then go stable 10w all the way. Can anybody test on their phone to confirm this? ive tried these chargers on xiaomi and realme phone they would charge upto 17w
Lg g8x charging speed
Tried every charger starting from 15W and up to 40W. QC 3.0 to 4+, Dash charge, Warp charge, Super charge, Adaptive Fast charge. 0 to 100% takes 2 hr 12 min.
LG g8x refuses to charge faster with any of them. When world moves to faster charging protocols incl. long hesitant apple for iPhone, LG does the opposite. LG and Qualcomm mentions that QC 4.0 supported in their official websites which should support 27 W, but with any charger phone accepts max. of 13 W in my testing.
I have been using LG phones for long only because of quad DAC. For people like me who wants to support LG, this slow charging is a real issue.
I understand that V60 comes with 25W qc 4.0 inbox charger which charges 0 to 100% in around 1 hr 45 min for 5000 mAh battery as per YouTube reviews.
Now the only question left for me is that can 25W V60 charger be used to charge g8x battery of 4000 mAh in 1 hr 30 min. Has anyone tried charging g8x with V60 charger? If so, can some post changing time.
I would really like someone to use Mi Pocket Powerbank Pro available in India a 22.5 W Quickcharge (don't know which Qualcomm level, guessing QC3) powerbank specifically using a super high quality cable either the Blauplunkt Flat USB 2 to type C or the Ikea Type C to Type C cable using the type C Power Delivery (PD) output port of this powerbank which I believe would be the topmost setup ever for charging this device. Is the Max fastcharge rating 18w of this device?? As such I did not even mention Redmi 30w powerbank. Which is the QC4 power adaptor or powerbank which can be bought in India?
If rooted you can get fast charging via a magisk module. It charges fast even with screen on... Which is what annoys me about the phones that restrict it to approx 1000. They still limit temperature to 46C
Turbo is 2750mah, super turbo is 3000mah
Normal is 2450mah and 45C limit.
Also recommend the intelligent power control magisk module, better than acc. I'm using 90 max 86 back on. Works great!
robnitro said:
If rooted you can get fast charging via a magisk module. It charges fast even with screen on... Which is what annoys me about the phones that restrict it to approx 1000. They still limit temperature to 46C
Turbo is 2750mah, super turbo is 3000mah
Normal is 2450mah and 45C limit.
Also recommend the intelligent power control magisk module, better than acc. I'm using 90 max 86 back on. Works great!
Click to expand...
Click to collapse
Tried superturbo and got ~3000 ma but in full run from 0 to 100 it just makes 10 to 12 min difference
YASHWANT DHAKAD said:
Tried superturbo and got ~3000 ma but in full run from 0 to 100 it just makes 10 to 12 min difference
Click to expand...
Click to collapse
It helps where keeping the screen on, the charging speed is not reduced. Before this, keeping the screen on would reduce the charge rate a lot.
Now I'm on s21 and they severely limit charge rate once the battery reaches 37C.

Charging speed with qc 3.0

So I've been testing charging speed with a quick charge brick(qc 3.0) and a 3amp cable for a while now and i can never reach to 18W (i know its hypothetical but i can't cross even 10W). I'm on latest xiaomi.eu 11.0.7 stable. These are the results I got from ampere - 4V 1.2 amps. I've tried changing the charger but results were pretty similar. I can only get upto 7-8 watts and idea why ? (I've started from 0% battery, 10%,20%,30%). My device doesn't get heated so i don't think it's throttling issue.

Categories

Resources