[Q] [ASK]Charging Dock Specification - Xperia Tablet Z Q&A, Help & Troubleshooting

The xperia tablet z comes with many versions: Wifi, 3G, or LTE.
One of them is made from Japan, which is sold with a charging dock. If anyone has this charging dock, please let me now the specification of the charger: input, output, etc, because I'm planning to mod a custom charging dock for my LTE XTZ.
Is it possible for me to increase the output ample of the charger? Somehow I realized that my XTZ take about 10 hours to complete the charging process. My charger's ouput is 5v, and 850 mA, and I intend to buy a 3rd party charger which outputs 5V and about 1.5 - 2.1 mA voltage.

kalentjne said:
The xperia tablet z comes with many versions: Wifi, 3G, or LTE.
One of them is made from Japan, which is sold with a charging dock. If anyone has this charging dock, please let me now the specification of the charger: input, output, etc, because I'm planning to mod a custom charging dock for my LTE XTZ.
Is it possible for me to increase the output ample of the charger? Somehow I realized that my XTZ take about 10 hours to complete the charging process. My charger's ouput is 5v, and 850 mA, and I intend to buy a 3rd party charger which outputs 5V and about 1.5 - 2.1 mA voltage.
Click to expand...
Click to collapse
Similar ideas are discussed in my Qi charging thread as well as here:
http://chargeconverter.com/blog/?p=194

Related

Charger replacement

hi,
i lost my original charger and would like to buy replacement. which can be not htc.
what are technical characteristics of the original charger?
mA, V?
i need with european plug.
thanks!
43 ones read the post and no one replyed. Cmon?! don't you have a charger near you? what are mA and V of the htc original 3part charger?
You can't expect people to reply within 7 minutes of posting a thread Give eBay a go, it'll be your best shot. I've got loads of extra chargers, but they have a US plug (not that hard to get a converter btw, super cheap).
Hope this helps http://cgi.ebay.com/EURO-AC-mini-US...ries?hash=item3ca4fc9c2b&_trksid=p3286.c0.m14
I've lost the orginal charger somewhere, and I was not able to find an original replacement. I successfully tried both following, but I use the second one:
1) Sony AC-U50A: Input Voltage 100 240 V 50/60 Hz, Rated Output Voltage: DC 5.0 V, Rated Output Current: 500 mA (http://www.sony.it/product/paa-ac-adaptors/ac-u50a)
2) Philips SCM2280/05: Voltage Required: AC 100-240 V, Voltage Provided: 5.6 V, Output Current: 500 mA (http://www.consumer.philips.com/c/power-solutions/universal-usb-charger-scm2280_05/prd/gb/)
regards
lontrapignola said:
I've lost the orginal charger somewhere, and I was not able to find an original replacement. I successfully tried both following, but I use the second one:
1) Sony AC-U50A: Input Voltage 100 240 V 50/60 Hz, Rated Output Voltage: DC 5.0 V, Rated Output Current: 500 mA (http://www.sony.it/product/paa-ac-adaptors/ac-u50a)
2) Philips SCM2280/05: Voltage Required: AC 100-240 V, Voltage Provided: 5.6 V, Output Current: 500 mA (http://www.consumer.philips.com/c/power-solutions/universal-usb-charger-scm2280_05/prd/gb/)
regards
Click to expand...
Click to collapse
Be careful with other chargers, they can actually hurt your device. If i'm correct, original HD chargers charge at 1000 mA, not 500. There've been several complaints with Motorla and Nokia chargers that end up messing the battery and the device so just a heads up.
kareeem said:
You can't expect people to reply within 7 minutes of posting a thread Give eBay a go, it'll be your best shot. I've got loads of extra chargers, but they have a US plug (not that hard to get a converter btw, super cheap).
Click to expand...
Click to collapse
Hi,
I know how to search the ebay or dealextreme.com. If you read my first post it asks for electrical characteristics:
what are technical characteristics of the original charger?
mA, V?
And not "where to find or how to use ebay search".
Thanks for your response.
kareeem said:
Be careful with other chargers, they can actually hurt your device. If i'm correct, original HD chargers charge at 1000 mA, not 500. There've been several complaints with Motorla and Nokia chargers that end up messing the battery and the device so just a heads up.
Click to expand...
Click to collapse
Could you (or anybody else) confirm that original charger has a label 1000mA on the back?
Bulka..
Manau visi HTC pakrovejai yra 5V 1A. Turejau P3300 ten irgi buvo 5V/1A, dabar HD irgi tas pats...
I think all HTC chargers are rated 5V 1A. My previuos Artemis charger also was 5V/1A, same is for HD charger.
golfietis said:
Bulka..
Manau visi HTC pakrovejai yra 5V 1A. Turejau P3300 ten irgi buvo 5V/1A, dabar HD irgi tas pats...
I think all HTC chargers are rated 5V 1A. My previuos Artemis charger also was 5V/1A, same is for HD charger.
Click to expand...
Click to collapse
Ačiū. Ieškosiu reiškia 1A pakrovėjo. Maniškis atrodė taip pat kaip nuotraukoje.
Big thanks goes to golfietis!!!
500mA isnt the cause of the charge issue on other phones.
500mA is what PC USB sockets give, and will mearly take twice as long to charge your battery than a 1000mA (1A) charger.
voltage is the dangerous value here, but anything using USB-type connector should be 5v.
if you want OE stuff, try http://www.htcaccessorystore.com/uk/p_htc_phone.aspx?i=173502

[Q] Max current allowed to charge the S3

Hi,
I've read some threads here about charging the S3, but not all is clear to me. I would appreciate some explanation:
1) I've read that the stock chargers output 1A. However, on the charger I got with my S3 it's written "output: 5V 0.7A". So do you think I somehow got a wrong charger?
2) I want to buy a car charger for the S3. There are many generic car chargers in ebay, some of then output 2A current. What is the maximum current allowed for the S3? I couldn't find this number in my S3 manual or on the phone itself. Will a charger of 2A cause harm to my phone? or to the battery? or to both?
Thanks in advance!
bump... does anyone know?
My charger output states .05v=1.0a.
As for what aftermarket charger to buy, I would stay away from chargers with more output than the official for 'peace of mind that my charger's specifications are the same as the official charger that came with the phone' reasons.
Cheers
Generally wall chargers output 1000mA (1A) and USB ports 500mA (0.5A)
You do not want to purchase anything that goes above 1000mA
Sent from my GT-I9300 using Tapatalk 2
I attach a picture of the adapter I got with my S3.
It says 0.7A on it, while it appears that other have one with 1A.
Did they con me with this adapter?
And regarding the maximum current allowed: do you think an adapter of 1.2A might harm the S3?
Do not know where your S3 come from but this charger is not made For S3 but for S2!
I just checked the model number:
S3 charger: ETAOU81EBE
S2 charger: ETAOU10EBE (like yours)
And there is no cable on the S3 charger, it use the USB cable
Thank you for this!
I don't get it. The charger was inside the S3 box and looked original. Damn!
I think the store I bought from import their S3 from Germany, since it came with Vodafone German stock ROM. Is it possible that this is the charger they sell on German vodafon? Or perhaps the store switched it for some reason?
Mine also come from my carrier: french vodafone
Was your S3 box sealed?
Those words, "teg listrik" and "frekuensi" is written in Indonesian
Sent from my GT-P1000 using xda app-developers app
Hi,
Background - I am an electronic engineer and have designed power supplies.
The Amp rating on a power supply is it's maximum capability to deliver power. The Voltage is the 'force' that it can push electrons through the device, this is the important one to have correct. So a 5V 300A Power supply will not charge your S3 any quicker than a 5V 1A power supply.
Get yourself a 1A car charger and you'll be fine. Depending on how the data pins on that charger are configured it'll be recognised as either a fast or slow charger but it will be fine in any case.
So, according to what you say, there should be not problem to use a 5V 2A charger on the S3?
The charger cannot accidentally push too much current to the device?
No. The phone limits the Amp the battery can get.
It simply won't go above 0.5 or 1Amp depending on what resistor is coded between the data pins (the 2 middle pins on the normal USB-plug)
(Note that this does not extend to all devices. E.g. cheap chinese toys and their batteries may not have any current limter, connecting them to "too powerful" chargers will result in damages or potential blow-up of the battery. The same applies to batteries without any electronic such as car batteries which can overheat and "cook")
I bought S3 in Germany 1.0A, there is a date on the charger:18.05.2012
Matching charger to phone
burmo said:
Hi,
Background - I am an electronic engineer and have designed power supplies.
The Amp rating on a power supply is it's maximum capability to deliver power. The Voltage is the 'force' that it can push electrons through the device, this is the important one to have correct. So a 5V 300A Power supply will not charge your S3 any quicker than a 5V 1A power supply.
Get yourself a 1A car charger and you'll be fine. Depending on how the data pins on that charger are configured it'll be recognised as either a fast or slow charger but it will be fine in any case.
Click to expand...
Click to collapse
Hi burmo,
An interesting concept. I have no clue in these things but what you say is not clear to me "all the way".
Charging my i93100 phone with 5.0V 3.1A will do no harm because it won't "push" more than 1A anyway?
And who is "responsible" for controlling this "push" the charger/battery/phone?
Does it work the same for Car chargers?
Thanks a lot,
Izik
multimeter check on .7amp charger
Animor said:
I attach a picture of the adapter I got with my S3.
It says 0.7A on it, while it appears that other have one with 1A.
Did they con me with this adapter?
And regarding the maximum current allowed: do you think an adapter of 1.2A might harm the S3?
Click to expand...
Click to collapse
so i have been wondering about this as well because i am currently building a custom charger for my s3 that charges the battery without having to plug into the charging port. i have redirected wires from the wireless charging port to metal tabs i have place on the back of my phone. it is a "drop in charger".
Anyway i have tested the charger that came with my phone. I also have the samsung stock charger that say the output is .7amp but after testing it with mutimeter, i have found that the output is actually 1.2 amps. As for max charging amps, I am not sure. I have tested several chargers. The new S4 charger puts out 2.34amps and i have not found any problem charging my s3 with it.
TrollTollKarl said:
so i have been wondering about this as well because i am currently building a custom charger for my s3 that charges the battery without having to plug into the charging port. i have redirected wires from the wireless charging port to metal tabs i have place on the back of my phone. it is a "drop in charger".
Anyway i have tested the charger that came with my phone. I also have the samsung stock charger that say the output is .7amp but after testing it with mutimeter, i have found that the output is actually 1.2 amps. As for max charging amps, I am not sure. I have tested several chargers. The new S4 charger puts out 2.34amps and i have not found any problem charging my s3 with it.
Click to expand...
Click to collapse
As far as I know the phone limits it so as you've found yes you will be fine
My original S3 charger is 5v 1.0amp
My original S3 charger is 5v 1.0amp. It was bought in Thailand with the phone.
I agree with burmo an advanced phone will have a current limiter as part of its circuit, however I prefer not to rely on it and not to exceed the manufacturer volt/amp recommendation.
The phone controls the current. In custom kernels (Boeffla and so on) you can change the target current. The phone has a protection built in, if the voltage is unstable (drops to much) it lowers the current untill the voltage is stable.
A HTC One charger I sometimes use (0,7A rated) only delivers 0,8A. A aftermarket charger I own (1,0A rated) is fine delivering 1,2A (modified target current, not stock). These charging currents can be read by various apps.
Get yourself a 1,0A rated charger and speed up your charging time.
Benjamin
burmo said:
Hi,
Background - I am an electronic engineer and have designed power supplies.
The Amp rating on a power supply is it's maximum capability to deliver power. The Voltage is the 'force' that it can push electrons through the device, this is the important one to have correct. So a 5V 300A Power supply will not charge your S3 any quicker than a 5V 1A power supply.
Get yourself a 1A car charger and you'll be fine. Depending on how the data pins on that charger are configured it'll be recognised as either a fast or slow charger but it will be fine in any case.
Click to expand...
Click to collapse
Seconded the post above being an electronic engineer as wel.
Voltage should be exactly the same as you need, but this will always be the case for a USB charger.
Current should just be enough or more.
The charging current is dictated my your phone and not - and I repeat - NOT by your charger!
mine rates at 1A

Charger comparison and what is the best?

Hello friends. I have z3 and my wife has note 4 and i have also asus transformer book and a lg optimus g charger which belongs my old phone. I have tested all chargers with ampere software from playstore and my results are:
With note 4 charger (Adaptive fast charger 2,0 A): it gets 1520 mA instantly and constantly from beginning to end.
With asus transformer book charger (2,0 A): it gets 1270 mA instantly and constantly from beginning to end.
With lg optimus g charger (1,2 A): form 900 to 1130 mA ascending
With original sony Z3 charger (1,5 A): 830 to 850 mA ascending
What is the reason of that despite sony has 1,5 A charger, it gives 850 mA? Do you have any charger that is faster than note 4 charger? Please type here your comments about this issue.
gomek111222 said:
Hello friends. I have z3 and my wife has note 4 and i have also asus transformer book and a lg optimus g charger which belongs my old phone. I have tested all chargers with ampere software from playstore and my results are:
With note 4 charger (Adaptive fast charger 2,0 A): it gets 1520 mA instantly and constantly from beginning to end.
With asus transformer book charger (2,0 A): it gets 1270 mA instantly and constantly from beginning to end.
With lg optimus g charger (1,2 A): form 900 to 1130 mA ascending
With original sony Z3 charger (1,5 A): 830 to 850 mA ascending
What is the reason of that despite sony has 1,5 A charger, it gives 850 mA? Do you have any charger that is faster than note 4 charger? Please type here your comments about this issue.
Click to expand...
Click to collapse
Actual charge rate is:
USB input power - system power consumption
So if the system power consumption is high, the battery current will be reduced.
This is why even though the Z3 has a battery current limit of only 1.5A (0.5C), Quick Charge 2.0 chargers are still beneficial - they'll continue charging the battery even when system power consumption is high. They are also more forgiving of high-loss (long or thin) USB cables due to supplying 9V to the device.
Entropy512 said:
Actual charge rate is:
USB input power - system power consumption
So if the system power consumption is high, the battery current will be reduced.
This is why even though the Z3 has a battery current limit of only 1.5A (0.5C), Quick Charge 2.0 chargers are still beneficial - they'll continue charging the battery even when system power consumption is high. They are also more forgiving of high-loss (long or thin) USB cables due to supplying 9V to the device.
Click to expand...
Click to collapse
thank you for your answer. But which one is the best do you think? which charger should i use.
gomek111222 said:
thank you for your answer. But which one is the best do you think? which charger should i use.
Click to expand...
Click to collapse
Any QC2.0 charger. Any one of them are good. I've got a Tenergy wall charger and a Powermod car charger.

Faster Charging Accessories - Can M4 Handle it?

Hi,
I've always found the battery in this phone to be poor.
I've owned years of Xperias and only one other had a bad battery life (Sola). This very often won't reach 1 day even on half brightness. I don't use this phone any more than the last one, or the one before, so it's the phone not my usage.
I just asked Sony and it doesn't use Quick Charge 2.0. That explains it. It charges so slowly.
The stock charger pumps out 850mAh. I see some chargers pumping out 1500mAh. What would happen to our phone? Would it charge even a little bit faster? Is it a threat to the phone's health?
Thanks
i charge my sony m4 with lg charger 1.8 A output, my phone charge much faster
Nice to hear!
Is that 1800 mAh? Input or output?
Thanks!
It shouldn't really damage phone I'm using 2.1mAh output charger on my current phone Lg L7 II while waiting for new phone (M4 Aqua) and it charges really fast, lasts long and no problems so far
Nice to hear it, guys. I sent an email to Sony and they answered that it supports 1500 mA so I bought(ordered) EP880 charger today. After trying it I will tell you how it works.
Thanks guys!
This is more like it! The M4 section has lots of views in threads but few replies! If we drop a line or two we can really learn from each other like this.
1500 definitely works eh? I chatted with a Sony rep and they said Quick Charge 2.0 is not supported in the phone. Not much info. from them. But I will look for the 1500 charger. That would be great.
2100? Wow! I wonder if your LG phone supports Quick Charge 2.0?
Interesting thread:
I found this interesting Sony Mobile thread where a Sony rep tells us a bit about it: https://talk.sonymobile.com/t5/Xperia-Z-ZL-ZR/needed-help-with-charger-for-xperia-z/td-p/373667
My first instinct was to browse on eBay. I'm going to get one there. Watch out though! There are many non-Sony chargers and some of them don't look trustworthy. Also, many of them say output 5.0V. But at which speed? 850 mAh or 1500 mAh? Some say 5.0V=850 mAh and others say 5.0V=1500 mAh. So, if you don't shop carefully, you may get the 850 charger all over again!
UCH10 Charger
As another comparisson, the standard (and only) quick charger available on Sony Mobile for any phone is this one UCH10:
http://www.sonymobile.com/global-en/products/accessories/quick-charger-uch10/specifications/#tabs
Output
5V/1800mA(9W)
9V/1700mA(15.3W)
12V/1275mA(15.3W)
Support Qualcomm's Quick Charge 2.0 Class A
"Maybe I'll try that charger? It can't do any damage according to Sony Mobile:
There's really no recommended mA from what i can find. The phone will use the amount it can handle up to a certain level. The fact that a charger is specified to a high mA doesn't mean that it's "pushing" that into the phone. It's what it can deliver."
https://talk.sonymobile.com/t5/Xperia-Z-ZL-ZR/needed-help-with-charger-for-xperia-z/td-p/373667
BUT...I checked Qualcomm's compatible device list, there are some Sony Xperia devices but the Z5 series mostly, not the M4. So, it would charge the phone but at a much slower rate...1500 maybe? But not Quick Charge 2.0 speed. So the older EP880 charger of 1500 mAh seems to be the max for this chipset/device.
https://www.qualcomm.com/documents/quick-charge-device-list
SharpnShiny said:
Nice to hear!
Is that 1800 mAh? Input or output?
Thanks!
Click to expand...
Click to collapse
Uotput
1,800 mAh, that's the same as the Sony Quick Charge 2.0 UCH10. That's definitely 1,800 mAh? I just don't want to spend €27 on discovering that I made an error and it's not compatible!
P.s. I've bought the EP880 1,500 charger and tested it, you can read here.
SharpnShiny said:
1,800 mAh, that's the same as the Sony Quick Charge 2.0 UCH10. That's definitely 1,800 mAh? I just don't want to spend €27 on discovering that I made an error and it's not compatible!
P.s. I've bought the EP880 1,500 charger and tested it, you can read here.
Click to expand...
Click to collapse
Do not buy it.
My answer there is right for you, too:
http://forum.xda-developers.com/m4-...-ep880-fast-charger-1-0-t3274091#post64390697
SharpnShiny said:
2100? Wow! I wonder if your LG phone supports Quick Charge 2.0?
Click to expand...
Click to collapse
Well I don't know really Qualcomm page says that snapdragon 200 supports QuickCharge 2.0. Yet I don't have any issues with it. It takes around 1hour 10mins to charge from 4% to 100% 2450mAh battery
Just to point out that in my research Qualcomms "Quick Charge" uses a higher voltage output while you're not using your phone.
These chargers are "smart" in that they communicate with the phones chip to give the OK on fast charging. If they don't they'll stick to universal 5v output.
You can buy other aftermarket "fast chargers" and these only output 5v but at higher amps. I use a 4.2amp charger for all my devices, my M4 takes about 50 minutes from 10-100%.
Also note that devices generally will only draw what they need/want. If a device only requires 1 amp and you use a 2+amp charger, it will only draw 1 amp.
Weznezz said:
Just to point out that in my research Qualcomms "Quick Charge" uses a higher voltage output while you're not using your phone.
These chargers are "smart" in that they communicate with the phones chip to give the OK on fast charging. If they don't they'll stick to universal 5v output.
You can buy other aftermarket "fast chargers" and these only output 5v but at higher amps. I use a 4.2amp charger for all my devices, my M4 takes about 50 minutes from 10-100%.
Also note that devices generally will only draw what they need/want. If a device only requires 1 amp and you use a 2+amp charger, it will only draw 1 amp.
Click to expand...
Click to collapse
Hi, thanks for the info.
You may have seen that we're confused about the M4's capabilities. Sony says it cannot support Quick Charge 2.0. Qualcomm lists that chip (in some, not all, I noticed) pages on their site as supporting Quick Charge 2.0. Do you know if it does?
I'm new to learning about devices drawing power. Would you mind giving a brief run down on what the M4 can draw in terms of power, what the stock charger draws? Then we could see better what a 4.2amp does.
Please and thanks!
I can confirm that several different QC2.0 chargers charge the M4 Aqua NO FASTER than a capable 2.1/2.4A charger. While the Snapdragon 615 chipset supports QC2.0, there is other circuitry in the charging path that must support it as well and Sony chose not to implement it in the M4 Aqua.
shopkins82 said:
I can confirm that several different QC2.0 chargers charge the M4 Aqua NO FASTER than a capable 2.1/2.4A charger. While the Snapdragon 615 chipset supports QC2.0, there is other circuitry in the charging path that must support it as well and Sony chose not to implement it in the M4 Aqua.
Click to expand...
Click to collapse
the difference is generally in the kernel
for example, the lg g2 mini has an SD 400 that supports QC 1.0 and is not functional in the stock rom, but with modded kernel that feature was enabled and the phone charges faster with a 2A charger
sergioslk said:
the difference is generally in the kernel
for example, the lg g2 mini has an SD 400 that supports QC 1.0 and is not functional in the stock rom, but with modded kernel that feature was enabled and the phone charges faster with a 2A charger
Click to expand...
Click to collapse
Can you point to an example for QC2.0? For 2.0, the charging circuitry must be able to sense and adjust voltage and current draw from 5v to 12v with steps in between. QC 1.0 is Qualcomm's implementation/branding traditional 5v/2A charging. Also, QC 2.0 circuitry can be licensed and implemented in other SOCs as is evidenced by the ZenPhone 2 (Intel) and Galaxy S6 (Exynos).
You're right that QC2.0 can be implemented at the Kernel level IF the underlying circuitry is already there (as was the case with the SD800 powered LG G2). That said, if the supporting circuitry is not there (independent of the SOC) it can't just be enabled in software.

Power Supplies for Tab S4

On another thread, Berkowich made mention that Tab S4 supports PD Power, but not CH3.
These were not terms I was familiar with, so I turned to Google... So QC, QC 2.0 and QC 3.0 make sense. The "adaptive fast charger" in the box with the Tab S4 has outputs at 5 & 9 volts, so I assume it is QC 2.0 and it switches between 5V and 9V as the battery is filled to more efficiently charge the battery. But I see QC2 talks about 5V, 9V and 12V. So is this the same and/or safe? And it isn't clear to me how PD Chargers are different? Just more current? Are they safe for the Tab S4? What is the type of non-Samsung charger to buy?
Thanks
Joe
PD typically refers to USB Power Delivery, which is a fast charging specification developed by the non-profit USB-IF organization. It is the actual open-industry standard.
Quick Charge, even though it is in many devices, is actually a proprietary standard owned by Qualcomm. Some device manufacturers choose to not implement QC even when they use Qualcomm chips in order to save on licensing fees.
QC 2.0 & 3.0 are not in compliance with the USB-PD specifications. However, QC 4.0 is.
Samsung has its own quick charging technology and only some but not all of their devices are compatible with QC 2.0 standard.
USB-PD - https://www.usb.org/usb-charger-pd
Official Certified QC device list - https://www.qualcomm.com/documents/quick-charge-device-list (Note that the Tab S4 is nowhere on the list)
Let me reask the question....
I have have several different types of chargers... Older 1A and less chargers from miscellaneous devices. A few 2.4A / 5V chargers that either came or were purchased for older devices I have around the house. Two Samsung Adaptive Fast chargers (9V/1.67A + 5V/2A), one that came with the Tab S4 and another that came with an S7 Edge.
So which of these is optimum for charging the Tab S4?
Will the 2.4A charger be slower than the 2A adaptive charger?
Is there another type of charger that would work better for the S4?
Can some chargers damage the S4?
Does it make a difference if I'm using an HDMI/USB hub? (Mine always says I'm slow charging / draining the battery when I plug the 2A adaptive charger into the hub.)
Thanks for your help -- this is a more complicated subject than I thought.
Edit: there's a link on the charge time thread that leads to another link that helps answer some of my questions.
https://www.xda-developers.com/charging-comparison-oneplus-huawei/
https://www.digitaltrends.com/mobile/how-does-fast-charging-work/
This seems to say that the best bet is a Samsung adaptive charger or a QC 2.0 charger that will throttle back to Samsung's standard.
This doesn't answer what is best when using a hub, and what dangers there might be using non Samsung chargers.
On a related subject, years ago I learned that all USB 2.0 charging cables were not equal -- that you need to look at the gauge of the charging wires, and that you could have huge differences in charge speed based on the cable you used. Are all USB C cables equal with respect to charging? Or do you need to look for fatter gauage / bigger wires to get more current / less voltage drop over the cable?
thanks,
Joe
drjoe1 said:
Let me reask the question....
I have have several different types of chargers... Older 1A and less chargers from miscellaneous devices. A few 2.4A / 5V chargers that either came or were purchased for older devices I have around the house. Two Samsung Adaptive Fast chargers (9V/1.67A + 5V/2A), one that came with the Tab S4 and another that came with an S7 Edge.
So which of these is optimum for charging the Tab S4?
Will the 2.4A charger be slower than the 2A adaptive charger?
Is there another type of charger that would work better for the S4?
Can some chargers damage the S4?
Does it make a difference if I'm using an HDMI/USB hub? (Mine always says I'm slow charging / draining the battery when I plug the 2A adaptive charger into the hub.)
Thanks for your help -- this is a more complicated subject than I thought.
Edit: there's a link on the charge time thread that leads to another link that helps answer some of my questions.
https://www.xda-developers.com/charging-comparison-oneplus-huawei/
https://www.digitaltrends.com/mobile/how-does-fast-charging-work/
This seems to say that the best bet is a Samsung adaptive charger or a QC 2.0 charger that will throttle back to Samsung's standard.
This doesn't answer what is best when using a hub, and what dangers there might be using non Samsung chargers.
On a related subject, years ago I learned that all USB 2.0 charging cables were not equal -- that you need to look at the gauge of the charging wires, and that you could have huge differences in charge speed based on the cable you used. Are all USB C cables equal with respect to charging? Or do you need to look for fatter gauage / bigger wires to get more current / less voltage drop over the cable?
thanks,
Joe
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Actually does someone that has an accurate usb meter help us. When i look for the charging support for the Snapdragon 835 on the web, it says QC4.0 but i can't find any QC4.0 chargers and i think it is the same with PD that i say on the other thread (it is just a think by the way because there is no QC4.0 chargers soo it is maybe a PD equivalent).
By the way when you are using the HDMI dongle(just HDMI and charging) did you use the original charger and the cable because there is no slow charging notification when i use it?

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