[Q] Increase charge rate when using MHL - Sprint Samsung Galaxy Note 3

Hello everyone,
I was wondering if there is a way to increase the charge rate while connected to an MHL adapter.
I have a 2014 Civic Si that literally has an HDMI input for the head unit.
I bought an MHL adapter and it works very well other than a safety limitation that stops screen mirroring while driving, and the fact that even if I am just using it to get the best quality audio into my head unit with the screen turned off, the MHL adapter uses more current than it returns to the phone, resulting in battery loss.
I have the usb power connected to a 2 amp 12v charger that works fantastic when it is just connected with a regular micro usb cable so I know its not the charger.
I have found some evidence that there is a mod that can basically tell the phone that it is connected via AC to take more current.
Would be awesome if someone could provide this, or another solution to this problem. I imagine there are a lot of people like me out there who like to use MHL adapters but don't want their battery to die.
Thanks

Check the quality of the cord. If it's some cheapo one from like eBay or something that may be the problem.
I've found that some of my older degraded cords won't charge the phone while I'm using it.
Also if you roll/folded the cord up sometimes it can pinch it just right to not supply the right charging power.

Speedin07si said:
Check the quality of the cord. If it's some cheapo one from like eBay or something that may be the problem.
I've found that some of my older degraded cords won't charge the phone while I'm using it.
Also if you roll/folded the cord up sometimes it can pinch it just right to not supply the right charging power.
Click to expand...
Click to collapse
To be clear it does show that it is charging (via USB) but its using more current than its getting thus end result is the drain.
It could very well be the cable - hence why I am asking if anyone can recommend a tried and tested solution of MHL + charge that actually charges it quickly.
Thanks,
BDS

Related

Monoprice has 400 MHL Adapters in stock! - $16

Make that 399.... haha
Here's a link:
Only $15.92 each
http://www.monoprice.com/products/p...=10833&cs_id=1083314&p_id=8675&seq=1&format=2
ieee_raider said:
Make that 399.... haha
Here's a link:
Only $15.92 each
http://www.monoprice.com/products/p...=10833&cs_id=1083314&p_id=8675&seq=1&format=2
Click to expand...
Click to collapse
How's it work?
Do you just plug it into the phone, to the TV? Or is there also Another cable needed to plug into the TV?
Thanx...
PMGRANDS said:
How's it work?
Do you just plug it into the phone, to the TV? Or is there also Another cable needed to plug into the TV?
Thanx...
Click to expand...
Click to collapse
Buy the adapter and a standard HDMI cable. Done deal.
PMGRANDS said:
How's it work?
Do you just plug it into the phone, to the TV? Or is there also Another cable needed to plug into the TV?
Thanx...
Click to expand...
Click to collapse
Not quite, the adapter requires power so you also need to plug a standard charger into it, plus you need an HDMI cable to go from the adapter to the TV. Frankly for now it's a more cumbersome solution than micro-HDMI as in the previous EVO (& Moto phones), since that was a 1 cable/adapter solution (unless you also wanted to charge the phone)...
In the future TVs will have MHL ports tho and you'll be able to output from phone to TV AND charge off the same MHL/USB-to-MHL/HDMI cable. For now tho, we have to live with the MHL to HDMI adapter with a charger plugged into it. Personally I think HTC & Samsung jumped the gun with this, by the time people have TVs that make MHL a better option than microHDMI we'll already be looking at the next generation of phones (if not the one after that).
P.S. I don't think it's necessary to bump three old threads on the same topic to get an answer to a question that has in fact already been answered on these boards. Just sayin'... Search button works.
Just buy the micro HDMI That's powered for the phone
Sent from my PG86100 using Tapatalk
spyke24 said:
Just buy the micro HDMI That's powered for the phone
Sent from my PG86100 using Tapatalk
Click to expand...
Click to collapse
That... Doesn't exist. The EVO 3D doesn't even have a microHDMI port, and standard HDMI of any kind doesn't transfer power (that's what MHL is for, to eventually allow a single cable power/video solution, duh).
spyke24 said:
Just buy the micro HDMI That's powered for the phone
Sent from my PG86100 using Tapatalk
Click to expand...
Click to collapse
The Evo 4G uses Micro HDMI. The Evo 3D uses MHL.
They are down to $14.02 on Monoprice now.
ONLY USB power
Is it just me - or using this monoprice adapter makes the phone charge in USB mode and not AC mode (50-90% reduction in charging current?).
I've tried several of my chargers that always report "AC charging" under settings, about phone, battery use (1000mA?)
but as soon as I plug in the monoprice MHL, it drops to "USB charging" (100mA - 500mA)?
I bought two of these Monoprice MHL adapters and both seem to do this. I've tried with four or five different micro-usb AC chargers and one DC cigarette lighter charger... all to the same result.
The result, for me, is that the phone charges at 1/10 the speed of normal - indeed depleting my battery even though it's plugged in to the charger (via the MHL adapter). Even turning my screen brightness all the way down and turning off all non-essential radios... still results in me not being able to watch a full movie before battery dies.
Is it just me or does MHL suck compared to the easy microHDMI of the evo4g?
Yeah it's kinda more cumbersome, eventually when TVs actually support MHL and we don't need these pass thru adapters then it'll be great as it'll be a single cable solution... It was implemented way too early on phones tho.
willfck4beer said:
Is it just me - or using this monoprice adapter makes the phone charge in USB mode and not AC mode (50-90% reduction in charging current?).
I've tried several of my chargers that always report "AC charging" under settings, about phone, battery use (1000mA?)
but as soon as I plug in the monoprice MHL, it drops to "USB charging" (100mA - 500mA)?
I bought two of these Monoprice MHL adapters and both seem to do this. I've tried with four or five different micro-usb AC chargers and one DC cigarette lighter charger... all to the same result.
The result, for me, is that the phone charges at 1/10 the speed of normal - indeed depleting my battery even though it's plugged in to the charger (via the MHL adapter). Even turning my screen brightness all the way down and turning off all non-essential radios... still results in me not being able to watch a full movie before battery dies.
Is it just me or does MHL suck compared to the easy microHDMI of the evo4g?
Click to expand...
Click to collapse
I can definitely confirm you're limited to USB power using the Monoprice adapter. BUT I'm definitely not losing battery power that fast. In fact, if I'm playing movies off the memory card - I'm still charging the phone. If I stream something while connected, my battery will drain - but nowhere near as bad as you're reporting.
I guess your ability to charge while playing from SD card is to be expected. Radios/streaming take a lot of power.
My normal use-case is 4G streaming netflix, hulu, youtube, hbo go via the MHL/HDMI to a pico projector. And it kills the battery REAL quick even with screen backlight to lowest, bluetooth and wifi off. I'll start experimenting with underclocking undervolting... to find the sweet spot of acceptable fps playback but little enough power to get under that threshold of charge from the adapter.
Anyone recommend a good program to see mA currently being used vs. mA drawn from charger?
Yeah, MHL seems like a great idea - except that not a single TV or device provides it. To me, seems a bad / annoying decision like providing USB5 in 2011... sure it's a cool technology - but isn't the point to be able to interface with EXISTING infrastructure? Annoying also that we NEED to plug in charger to use it.

Samsung MHL to HDMI Adapter not charging the battery

Hello there,
I bought Samsung's MHL to HDMI Adapter (http://www.amazon.com/Samsung-MHL-HDMI-Adapter-Packaging/dp/B005LGUDKK/ref=pd_cp_cps_1) for my at&t SGS2, video and audio worked on my HDTV without hassle, but it did not actually charge phone's battery. when it was hooked up it kept 'rising bar' on battery icon in notification area and I was under impression it's truly charging as well playing the video on my TV, but it showed 30% batter warning that's when I realized it's not charging but faking to show charging!
Is is normal or abnormal, but I read in wiki or somewhere when it's hooked on MHL to HDMI Adapter/dongle SSGS2's designed to charge the battery as well, I need to your help to determine if I have a faulty one or I should turn on/off anything on phone!
Thanks in advance!
It will only charge your phone if the TV is a MHL compliant TV. I don't think any TVs on the market are compliant yet.
There should be a spot on the adapter to plug your charger into. That is the solution for non-compliant TVs. Did you plug your charger into the adapter?
Sent from my Galaxy S II (i777)
Thanks quarlow for quick reply. Yes I indeed plugged the charger into Adapter in order for it to work, that worked flawlessly, but the question is why the battery icon on my phone was showing 'charging bar' while it was not actually charging, that's mysterious.
My TV may be not MHL complaint as it's 2 yrs old already, but MHL complaint TV's don't need the MHL adapter be powered by external chargers, if I am right.
Thanks!
I too have an MHL adapter but it isn't the official "Samsung" one, but it will charge the phone overnight, but I've never left the device plugged into a tv and the adapter for an extended period of time.
I imagine that the adapter needs to draw power to send an image out to the TV, and the phone simply assumes that a charger is plugged in but rather than actually getting a charge the power is being diverted into the MHL adapter, and maybe a little bit is going to the phone but not enough to offset the drain of displaying an image on an HDTV.
I'll give it a test drive tonight and see if I get any different results, but I bet I have the same result.
TXFLGO05 said:
I too have an MHL adapter but it isn't the official "Samsung" one, but it will charge the phone overnight, but I've never left the device plugged into a tv and the adapter for an extended period of time.
I imagine that the adapter needs to draw power to send an image out to the TV, and the phone simply assumes that a charger is plugged in but rather than actually getting a charge the power is being diverted into the MHL adapter, and maybe a little bit is going to the phone but not enough to offset the drain of displaying an image on an HDTV.
I'll give it a test drive tonight and see if I get any different results, but I bet I have the same result.
Click to expand...
Click to collapse
Much appreciated !
From what I can tell the stock charger is only 700MA and will charge the phone slowly when not in use, however if it is inuse I am sure it will only be able to keep up with the power used.
I use an HTC charger most of the time it is a 1000MA charger and seems to be a bit faster. I have not tried this with the MHL connector tho.
Sent from my SAMSUNG-SGH-I777 using Tapatalk
xisruno said:
From what I can tell the stock charger is only 700MA and will charge the phone slowly when not in use, however if it is inuse I am sure it will only be able to keep up with the power used.
I use an HTC charger most of the time it is a 1000MA charger and seems to be a bit faster. I have not tried this with the MHL connector tho.
Sent from my SAMSUNG-SGH-I777 using Tapatalk
Click to expand...
Click to collapse
I believe this is your answer as well. I did not have the opportunity to test drive the MHL adapter last night, but what I would suggest is turning off whatever you aren't using while streaming. Check out the link below, and the last review for a similar problem from another MHL adapter, although MHL allows charging I imagine if you read the spec on it (the tech spec), it probably only supports 500 mAh max. Although it costs $100 to read the draft spec (which is stupid).
I will find out if I experience the same drain as well but I imagine what is happening is the Wifi/Data connection is draining faster than the charge is going into the battery, which is probably why standard use doesn't cause a problem. However streaming coupled with whatever else is going on is probably the culprit. So I'd suggest if you are going to stream anything while connected to disable non essential services (Sync, other data connections, bluetooth) and clear RAM so only what you want is actually running.
http://www.monoprice.com/products/p..._id=1083314&p_id=8675&seq=1&format=4#feedback
TXFLGO05 said:
I believe this is your answer as well. I did not have the opportunity to test drive the MHL adapter last night, but what I would suggest is turning off whatever you aren't using while streaming. Check out the link below, and the last review for a similar problem from another MHL adapter, although MHL allows charging I imagine if you read the spec on it (the tech spec), it probably only supports 500 mAh max. Although it costs $100 to read the draft spec (which is stupid).
I will find out if I experience the same drain as well but I imagine what is happening is the Wifi/Data connection is draining faster than the charge is going into the battery, which is probably why standard use doesn't cause a problem. However streaming coupled with whatever else is going on is probably the culprit. So I'd suggest if you are going to stream anything while connected to disable non essential services (Sync, other data connections, bluetooth) and clear RAM so only what you want is actually running.
http://www.monoprice.com/products/p..._id=1083314&p_id=8675&seq=1&format=4#feedback
Click to expand...
Click to collapse
So you mean if phone is hooked up with MHL adapter while it's not actually streaming , the battery percentage should go up (meaning charging) like 8% ->to 9% -> 10% ? I can try this.
I know the MHL adapter will charge your phone if you aren't streaming, I had mine plugged in sent text message, watched a video clip I shot, looked through pictures, and left it plugged in. I also used to charge my phone via the MHL adapter (charger into MHL into phone) regularly but the charger kept popping out of my adapter if I checked my phone.
I'll look into it more this weekend and get back with you about it.
Can confirm this is indeed a problem. Would recommend under clocking the processor
Until it's unbearable and try again.
My processor is oc'd on demand but it drained it really fast. Probably a glitch in their version of GB.
Sorry I don't have better news!
Sent from my SAMSUNG-SGH-I777 using XDA App
Thanks Guys!
I did kinda experiment, MHL adapter is indeed charging the battery while streaming, but battery drains faster than being charged, this is the outcome.
1. I plugged the phone while it's not streaming ..battery percentage increased from 78 ->79->80% and so on.
2. I took the phone off the MHL adapter and played the same video (flash based) it drained 10% of battery in 20 minutes.
3. I hooked the MHL adapter/charger and streamed the same video (flash based) it drained 5% of battery in 20 minutes.
I would like to conclude, MHL adapter charged the battery, but flash based video streaming drained the battery faster than the rate in which the battery was being charged.

MicroUSB to HDMI adapter - UPDATE: It doesn't charge

I just got my microUSB to HDMI adapter from Monoprice and it works well. However, is it supposed to maintain current to the phone? I have it all plugged in and I get an orange light on the phone but I lost 10% battery power using it for 15 minutes. Doesn't seem right?
P.S. Monoprice customer service is excellent. I can't speak to the longevity of the products but the service is excellent.
...Sent from my Tab
I had the same issue with the same Monoprice MHL adapter, even when 'charging' the system with a 1A wall plug.
Ozy666 said:
I had the same issue with the same Monoprice MHL adapter, even when 'charging' the system with a 1A wall plug.
Click to expand...
Click to collapse
What is a 1A wall plug?
For the record, I am using the OEM plug connected to a microUSB cable I bought from Monoprice.
Uh oh. Did we get screwed?
...Sent from my Tab
I used an AC outlet 1 amp USB charging plug to power the system with a standard micro-USB cable.
People have observed problems with charging the Rezound through a car dock, so maybe it's related to that problem as well.
I tried charging using the Monoprice cable and it charged fine. If we were unsure before, I can say for sure now that it is the adapter. I don't know if it's the one sold by monoprice or, like you said, a bug in the system. Guess I can only watch 60 min. of video (tops and end up with a dead phone) or I'm out $7... kind of think I'm out the money... and no need for the cables I bought with it. Hope others read this.
The other Monoprice cables are fine. No beef with them.
...Sent from my Tab
I asked Monoprice about it. Here's what they said....
----------
Hello Mr. Paul,
I understand that there may be an issue with your MHL adapter you had purchased. One thing to keep in mind is that our phones are really powerful now and draw a huge amount of power. So one thing to first consider is your power draw, secondly remember most androids can tell whether it’s connected to a computer usb port or AC power supply by checking if the data pins are shorted together. Since the data pins will be in use with the MHL adapter it will never register as an AC power supply and will not draw more than 500ma of power available to a computer usb port. This is not a limitation of the MHL adapter, but rather a design flaw in the implementation of MHL itself on the phone and perhaps design flaw is a little harsh but with the implementation of the MHL on the phone, not the adapter itself. Hopefully this clears up some things for you and if the adapter isn’t going to quite work out for you I can still issue an RMA for a return for you if you like I would just need an order number to get the process started.
Thank you
-----------
Again, good customer service. Unfortunate about the phone limitations.
...Sent from my Tab
Anyone know if this is a hardware or software issue?
feralicious said:
Anyone know if this is a hardware or software issue?
Click to expand...
Click to collapse
Based on the information from tech support above, it sound like a hardware issue.
...Sent from my Tab
It is a hardware issue, the official HTC MHL adaptor does the exact same thing. (I have two of them)
~John
Yeah, I thought it might be something like that. People were able to fix the car dock charging issue by shorting the data pins, but obviously that won't work for the MHL adapter.
I ordered one from monoprice too, I'll test it when I get home from vacation.
Sent from my ADR6425LVW using xda premium
jmorton10 said:
It is a hardware issue, the official HTC MHL adaptor does the exact same thing. (I have two of them)
~John
Click to expand...
Click to collapse
Ozy666 said:
Yeah, I thought it might be something like that. People were able to fix the car dock charging issue by shorting the data pins, but obviously that won't work for the MHL adapter.
Click to expand...
Click to collapse
I wonder if a Y adapter out of the phone to split the adapter and a charging cable would work? If there is such a thing for micro usb.
Don't think so. The phone won't draw the higher 'AC' charging current unless it sees that the data pins are shorted. If the data pins are shorted, you won't be able to get data out for the HDMI connection.
Basically, while it's nice to have only one port to keep things simple, a separate HDMI port and USB port for charging would have worked better in this case.
Well then I'm returning for a GNex.
If it's tethered via usb to a computer with an HDMI out to TV/receiver can you stream from the Rezound? And would the charge via usb be enough to keep it alive for a movie?
If not then I'm definitely dropping mhs. Connection problems and this issue... Bah.
Sent from my ADR6425LVW using Tapatalk
Maybe depends on what else was drawing power on your phone. If you turned off everything else, maybe you would have enough charge to stream a movie. My battery was dropping pretty fast, but I didn't try to optimize by turning off mobile data, wireless, etc...
feralicious said:
Well then I'm returning for a GNex.
If it's tethered via usb to a computer with an HDMI out to TV/receiver can you stream from the Rezound? And would the charge via usb be enough to keep it alive for a movie?
If not then I'm definitely dropping mhs. Connection problems and this issue... Bah.
Sent from my ADR6425LVW using Tapatalk
Click to expand...
Click to collapse
That would be exactly the same for the same reason, while connected to your wall charger the phone can receive 1000mA and will be in "AC" mode, when connected to your computer or another device which uses the data pins your phone will be in "USB" mode and can only receive 500mA, since your phone is capable of using as much as 1000mA this will not be enough to charge your phone if you are doing anything power intensive like say playing a movie etc. It will only supplement the battery power and keep it from draining so fast.
It should make it through a movie though. I have not tried mhl so I don't know what it draws from the phone. If you instal "battery monitor widget" from the market it will tell you what your draw is and will keep a history log of it with posts every 5 min, try playing a movie then go and check the log and see what it drains on average.
My phone easily makes it through a movie if I start with a fully charged battery, although it does steadily drain it.
As far as the nexus, if anything it is probably even worse with the bigger screen.
~John
does the screen need to be on for MHL output to a monitor or TV?
mc_365 said:
does the screen need to be on for MHL output to a monitor or TV?
Click to expand...
Click to collapse
On mine, the screen turns off as soon as it shows on the TV. If you unplug the connection, phone screen comes back on.
...Sent from my Tab
jmorton10 said:
My phone easily makes it through a movie if I start with a fully charged battery, although it does steadily drain it.
As far as the nexus, if anything it is probably even worse with the bigger screen.
~John
Click to expand...
Click to collapse
Are you using the phone to watch? Meaning is your screen on? It would seem that's the only way the screen size would matter. If you brought up the nexus due to my comment it was just a joke because of all the warring threads. I'm in love with the Rezound.

[Q] vzw note 2 charging problems

My car charger doesn't charge my note 2 although it acts like it charging. How can I fix this issue.
webb7735 said:
My car charger doesn't charge my note 2 although it acts like it charging. How can I fix this issue.
Click to expand...
Click to collapse
Car chargers work much slower than a wall charger because of the output of it. If you have the screen on, using gps, and listening to music at the same time it won't charge or it will actually drain.
charging problems
webb7735;4216o87 said:
My car charger doesn't charge my note 2 although it acts like it chargine. How can I fix this issue.
Click to expand...
Click to collapse
pp
Probably, the car charger is putting out just enough amps to activate charging mode, but not enough to charge with any discernable speed
I would look for a more reputable charger brand. I have found that cheapie chargers just don't perform well. Especially with the 2 amp requirement our devices need. A 1 amp verizon mobile charger with the micro usb factory attached and ment realistically for my wife's s3 1 amp requirement is adequate to provide a stable but long charge time for my note 2. Remember, some power distribution is lost simply in the usb connection between a cheap 1 amp charger and the usb cable plugged into it. Another useful addition for mobile charging would be an ac/dc inverter that allows your factory home 2 amp charger to plug into your vehicle. That would be reasonably clean 110 v ac to dc at 2 amp from your genuine samsung home charger. Better chance of getting the charging capacity you require. Also, don't forget to chech your usb cable. It may look fine, but could be stretched or damaged causing a bad charge connection. But definitely avoid cheap car chargers. Not only can they work sporadically, they may actually damage your phone.
MUOTE=BoostedB18C;42146532]Car chargers work much slower than a wall charger because of the output of it. If you have the screen on, using gps, and listening to music at the same time it won't charge or it will actually drain.[/QUOTE]
I have tried charging my phone with it turned off when its charging in my car i dont use it i just let it charge but it doesnt work. Its ok not a big deal i can charge it at home and get a good day and a half on a full charge. I was just wondering if there was a way to fix it.
SuperDuperPuddin said:
pp
Probably, the car charger is putting out just enough amps to activate charging mode, but not enough to charge with any discernable speed
I would look for a more reputable charger brand. I have found that cheapie chargers just don't perform well. Especially with the 2 amp requirement our devices need. A 1 amp verizon mobile charger with the micro usb factory attached and ment realistically for my wife's s3 1 amp requirement is adequate to provide a stable but long charge time for my note 2. Remember, some power distribution is lost simply in the usb connection between a cheal 1 amp charger and the usb cable plugged into it. Another useful addition for mobile charging would be an ac/dc inverter that allows your factory home 2 amp charger to plug into your vehicle. That would be reasonably clean 110 v ac to dc at 2 amp from your genuine samsung home charger. Better chance of getting the charging capacity you require.
Click to expand...
Click to collapse
Thanks for the info. I will try that.
SuperDuperPuddin said:
pp
Probably, the car charger is putting out just enough amps to activate charging mode, but not enough to charge with any discernable speed
I would look for a more reputable charger brand. I have found that cheapie chargers just don't perform well. Especially with the 2 amp requirement our devices need. A 1 amp verizon mobile charger with the micro usb factory attached and ment realistically for my wife's s3 1 amp requirement is adequate to provide a stable but long charge time for my note 2. Remember, some power distribution is lost simply in the usb connection between a cheap 1 amp charger and the usb cable plugged into it. Another useful addition for mobile charging would be an ac/dc inverter that allows your factory home 2 amp charger to plug into your vehicle. That would be reasonably clean 110 v ac to dc at 2 amp from your genuine samsung home charger. Better chance of getting the charging capacity you require. Also, don't forget to chech your usb cable. It may look fine, but could be stretched or damaged causing a bad charge connection. But definitely avoid cheap car chargers. Not only can they work sporadically, they may actually damage your phone.
Click to expand...
Click to collapse
This, I just didn't feel like explaining it all. Also using an inverter can cause problems with strain on the electrical load of the vehicle though. If you have a big truck, they are safe to use. If you have a civic, I wouldn't use one.
charging problems
webb7735 said:
Thanks for the info. I will try that.
Click to expand...
Click to collapse
You are most welcome.
BoostedB18C said:
This, I just didn't feel like explaining it all. Also using an inverter can cause problems with strain on the electrical load of the vehicle though. If you have a big truck, they are safe to use. If you have a civic, I wouldn't use one.
Click to expand...
Click to collapse
I used one all the time when I had my Civic Si to power mine and a friends laptops when in town, we didn't have high speed at our houses and the provider wanted 50k to bring it, and I never experienced any issues with electrical strain. Im not saying it doesn't happen but with the newer vehicles it isn't that much of an issue.
Sent from my SCH-I605 using XDA Premium HD app
shangrila500 said:
I used one all the time when I had my Civic Si to power mine and a friends laptops when in town, we didn't have high speed at our houses and the provider wanted 50k to bring it, and I never experienced any issues with electrical strain. Im not saying it doesn't happen but with the newer vehicles it isn't that much of an issue.
Sent from my SCH-I605 using XDA Premium HD app
Click to expand...
Click to collapse
Thanks for the info.

HDMI adapter cable for pro 10.1

I bought this hdmi cable from amazon: http://www.amazon.com/gp/product/B00K61OB6C/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1
I hooked up the tab to the tv, cranked up netflix and nothing. I plugged in the power adapter and got a picture. So needs charger to plugged in to work. I wasn't real keen on the output, but was only testing for connectivity. Might come back and edit after I have chance to adjust settings.
Today, I plugged the cable into the second hdmi port on my tv and it does mirror the tab display. Good response time too.
The charger is necessary but it does not charge the Tab. Left it plugged in and battery was down to 38% before i noticed.
Maybe a hardware error? Because under features it's described that it will charge your device...
burningstep said:
Maybe a hardware error? Because under features it's described that it will charge your device...
Click to expand...
Click to collapse
Probably not a hardware error. I'm on my 3rd dongle that's supposed to charge your tablet while using connected devices. The latest is this one: http://www.amazon.com/E-More%C2%AE-Multi-functional-Connection-Reader-Samsung/dp/B00K80C9CE/ref=sr_1_8?ie=UTF8&qid=1403104007&sr=8-8&keywords=HDTV+HDMI+Adapter+Cable+USB+OTG+Card+Reader
Everything works except for charging the tablet. Have a red X on the charging symbol while the battery continues to drain. It does charge the tablet while it's off. I have a power hungry Tab Pro 12.2 that has trouble maintaining a charge while playing a couple games with the stock 2 amp charger. I'm beginning to think that none of the HDMI dongles out there are capable of delivering the current necessary to run the larger tablets.
Ah, I see. It's because not enough power through the micro usb. You need 2A but this adapter's only delivering 1A.
It seems, there a no adapters with 2A...
I have a ton of usb chargers gathered over the years. Largest i have is only 5.1 volts. Tab has a large output. Wonder if other devices could be damaged using it or is output regulated by draw of whatever it is attached to? At any rate, i don't think any of the dongles or otg cables have a power source other than what is supplied by the tabs adapter. So are you thinking it is an issue with the pin configuration on the adapter? It is a 11 pin connector. Sure wish there was 1 standard for everyone instead of everyone having their own.
Sent from my LG-D959 using XDA Premium 4 mobile app
It's not limitated by the pins, there are just for more or less possibilities for an interchange (at least a salesman told me that). It's limited by the inside electronical components. Maybe anybody out there to explain it better or correct my words?
If I remember correctly (it's been a couple years since I tested it), my S3 required the Samsung charger + Samsung wire hooked up to the HDMI (I have the Samsung HDMI adapter) to charge the device while mirroring the screen. I tried it with a more powerful power adapter (2.1 amps vs Samsung 1.x amps) and generic wire but the phone would lose power over time. I could even charge the phone while mirroring if I used a generic Samsung wall charger and Samsung cord that was listed as 0.8 amps.
I bought the official Samsung one a few weeks ago and it is working fine, it also charges the device while using it but you have to connect a charger to the MHL-HDMI adapter.
Sadly I recently flashed CM11 on my TabPRO 10.1 and now the adapter doesn't work anymore. I get picture but no sound Was so happy about getting CM11 official on my device, but this feature is something I can't live without so I'm going to have to hop back to stockbased
HDMI doesn´t work
Hi guys! I´ve bought this one adapter dhgate.com/product/1-1-mhl-11-pin-micro-usb-to-hdmi-cable-hdtv/163941539 I know is not the original one but doesnt work!!!! I did all the steps but nothing. Any idea?? I have installed the original ROM on my galaxy tab t520. I need help!!! Thanks
Hey everyone, so just reading all the comments regarding the HDMI adapter not charging your tab while it is plugged in with the charger, I have also had issues with it and also with my Note2 and the Samsung Smart Dock I use with it. But I did however manage to find the solution to why it would not charge while on the HDMI dock that is connected to my T.V. It seams that if you plug either the Smart Dock or even the HDMI connectors to the HDMI cable first then plug in the charger it will show its charging but will eventually lose charge while outputting an HDMI output, instead, you need to first plug in the charger cable into your HDMI adapter, then plug it into your phone or tablet and finally plug in the HDMI cable into the adapter, I have found this to be the way to keep my phone and tablet charging while also having the HDMI output connected to my T.V..
Hope this helps .

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