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Are all USB car chargers like this? Can I prevent this by getting a higher quality charger? When I'm not using maps or navigation (or turn off the screen for a while), then it'll slowly charge back up.
fungosaurus said:
Are all USB car chargers like this? Can I prevent this by getting a higher quality charger? When I'm not using maps or navigation (or turn off the screen for a while), then it'll slowly charge back up.
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Click to collapse
GPS is usually a big energy hog. How many amps is your car charger?
You should be able to get away with a higher amperage charger, but the trade off may be reduced battery life.
fungosaurus said:
Are all USB car chargers like this? Can I prevent this by getting a higher quality charger? When I'm not using maps or navigation (or turn off the screen for a while), then it'll slowly charge back up.
Click to expand...
Click to collapse
How fast does it discharge? I just went on an out of state trip last week and had gps on with the charger plugged in for several hours at a time. I didn't pay attention to the actual charge numbers, but it either discharges very gradually or charges very gradually. I could probably run it all day with the charger and gps without a problem. I don't recall the amp output of my car charger, but it is one of the cheap foreign models.
fungosaurus said:
Are all USB car chargers like this? Can I prevent this by getting a higher quality charger? When I'm not using maps or navigation (or turn off the screen for a while), then it'll slowly charge back up.
Click to expand...
Click to collapse
Reflash your ROM, dude. I had that problem on one of my initial GB ROM's where I had bad drain using GPS while charging in my car. I redownloaded and wiped everything and reflashed the ROM and everything was good.
Sent from my SGH-I777 using XDA
If you are running a custom ROM, you can use SetCPU (or any other CPU clock control app that allows profiles) to set max of 800MHz when plugged in. This should at least get you to even charge/discharge levels when plugged in and running GPS while driving. Probably will depend on your screen brightness.
I don't run GPS long term very often right now, but I was for a while and FWIW, I was able to stream pandora, run google maps with screen on, not have any lag, and get a slow charge from my car charger by limiting clock speed to 800MHz.
Your other option (and what I usually do) is turn off the screen during longer sections of GPS nav with no turns (like sections of highway). You'll still get audible notifications for the next turn/maneuver/interchange/whatever, and you can turn the display on then if you need visual along with audio nav. The phone shouldn't have any problem charging and running GPS with the screen off...
fungosaurus said:
Are all USB car chargers like this? Can I prevent this by getting a higher quality charger? When I'm not using maps or navigation (or turn off the screen for a while), then it'll slowly charge back up.
Click to expand...
Click to collapse
Not all USB car chargers are alike. You need two things:
1. The car charger outputs higher current than 500ma. You need at least 700ma.
2. The charger is wired correctly to be recognized by phone as AC charger instead of PC USB port so that the phone will actually draw more than 500ma for charging. You can go to phone's status page to read what charge mode it is using.
Most iDevice chargers will not meet #2.
I have a stock Samsung car charger and it charges my phone while using Google Nav.
Thanks for the tips guys.
My phone discharges at around 1% every 20 minutes or so. I've been doing things like turning the screen off during periods of downtime to help with this (actually charges when I do this).
I'm using cheapy car adapter actually that has two usb ports and 2 cigarette ports in it and I use that with a samsung branded usb cable.
Hm yeah I'll try and see if limiting the CPU will help and if it does perhaps I'll just do that from now on.
foxbat121 said:
2. The charger is wired correctly to be recognized by phone as AC charger instead of PC USB port so that the phone will actually draw more than 500ma for charging. You can go to phone's status page to read what charge mode it is using.
Most iDevice chargers will not meet #2.
I have a stock Samsung car charger and it charges my phone while using Google Nav.
Click to expand...
Click to collapse
Do you know of any other options that are wired correctly to draw more than 500ma? I think I did hear from somewhere that charging via usb is considerably slower than when using the wall charger. Do you know of any other options that would fulfill this requirement besides getting the stock Samsung car charger? Also I assume just finding a higher amp charger wouldn't work if the phone detects it as a usb charger instead of an AC charger?
fungosaurus said:
Do you know of any other options that are wired correctly to draw more than 500ma? I think I did hear from somewhere that charging via usb is considerably slower than when using the wall charger. Do you know of any other options that would fulfill this requirement besides getting the stock Samsung car charger? Also I assume just finding a higher amp charger wouldn't work if the phone detects it as a usb charger instead of an AC charger?
Click to expand...
Click to collapse
The correctly wired charger will typically short the USB data PINs. iPhone charges and most generic car chargers with UBS ports don't do that. Most HTC chargers and Motorola chargers will work on Samsung phones. You need take a look at your car charger to see how much amps it can supply (listed on the spec label). The PC usb can only output 500ma max per spec. It is not enough to charge the phone while keep the screen on, GPS running and 3G connection active. Your Samsung OEM wall charger is rated 700ma. So, you need a car charger that outputs at least 700ma.
You then need to verify from the phone that the particular charger is recorgnized by the phone as AC charger. Without that, the phone will only draw 500ma max.
Seems ever since I updated to the latest OTA update, if I plug my phone in on certain chargers I get a notification stating slow charging enabled please connect to your factory charger. Anyone else having this issue?
It seems to do it on any charger or 12volt car to USB adapter capable of outputting 2 to 2.1 amps
Stock ROM, rooted, unlocked, s-off
Sent from my HTC6435LVW using Tapatalk 2
Slow Charge Message
arisch86 said:
Seems ever since I updated to the latest OTA update, if I plug my phone in on certain chargers I get a notification stating slow charging enabled please connect to your factory charger. Anyone else having this issue?
It seems to do it on any charger or 12volt car to USB adapter capable of outputting 2 to 2.1 amps
Stock ROM, rooted, unlocked, s-off
Sent from my HTC6435LVW using Tapatalk 2
Click to expand...
Click to collapse
Same here. Glad to hear it is not just me. I just got off with NA HTC Tech Support. There official stance is that they do not recommend or support using any device other than the official charging cable and plug in device. They went as far to say that they do not support charging in the car. I just about flipped my lid on the phone.
Here is the link to their site: http://www.htc.com/us/support/howto...783&p_name=droid-dna-by-htc-(verizon-wireless)
"Only the power adapter and USB cable provided in the box must be used to charge the battery"
I was told by Verizon that this was just a scare tactic, while HTC says I am not getting the right charge and they have no answer since they do not support DC charging in the car. Any info people have is appreciated. It works fine with Hard Wired DC -MicroUSB, but not with any USB Plug in.
Any apps that would help me measure the amount of charge it is getting?
Thanks in advance.
What are the specs on your car charger?
Sent from my HTC6435LVW using Xparent Red Tapatalk 2
So odd that they would do that, especially with the power draw of the phone. However you can charge using the battery packs?
My car adapter is a Macally USB car adapter model carusb10 output 5v/2.1 amp x1 500mA x2.
As for my house adapters the RCA 2 port USB wall adapter. 2.1 Amp x 1 or 1000mA x 2 I believe.
Sent from my HTC6435LVW using Tapatalk 2
Everyone with a stock DNA unplug your charger and flip it around. As in flip the prongs. It should give you this message even with the HTC supplied one. Or try this. When you use another charger and it gives you that message unplug it and flip it. It should straighten out. I dunno. Something about the way the power is drawn.
xcesivemastub8ah said:
Everyone with a stock DNA unplug your charger and flip it around. As in flip the prongs. It should give you this message even with the HTC supplied one. Or try this. When you use another charger and it gives you that message unplug it and flip it. It should straighten out. I dunno. Something about the way the power is drawn.
Click to expand...
Click to collapse
I have tried several different USB adaptors, from Razorfish(BestBuy), Belkin single USB input 2.1amp, innocell (RadioShack) dual SUB 3.1amp. Same problem on all.
On the other hand, any direct Wall connection with USB cable attached seems to work fine.
Also, I have the Motorola p4000 battery backup and when I plug that in, it also works fine and views it as AC.
Swapping the pins didn't work for me, same issue. Its a pita for me especially charging in the car because when using phone for navigation it charges so slow that it can't actually charge my phone and my battery decreases. I've went the route in the car I use my nexus 7 charger connected to an inverter.
Sent from my HTC6435LVW using Tapatalk 2
From my phone conversation with Seth from HTC Support, the slow charging warning is due to the update because the update incorporates the faster charging feature that qualcomm & htc have referenced too recently (can't remember what its actually called). The phone has a new type of charging setup that makes it charge faster than some other phones.
Unfortunately some chargers (wall/car) dont supply enough voltage to activate the charging feature so while the phone does charge fine (it charges at standard phone charge rate) it cannot charge at the faster rate due to the charger.
He states that this will not harm the phone and ther phone will charge fine and it a normal time. You can disregard the warning. For those that like the faster charge rate, you have to use the right charger/cable.
Before the update our phones were mostly charging at the slower rate and that's why most didn't see a warning unless the cable being used was below the standard rate of charge.
Hope this helps
arisch86 said:
Seems ever since I updated to the latest OTA update, if I plug my phone in on certain chargers I get a notification stating slow charging enabled please connect to your factory charger. Anyone else having this issue?
It seems to do it on any charger or 12volt car to USB adapter capable of outputting 2 to 2.1 amps
Stock ROM, rooted, unlocked, s-off
Sent from my HTC6435LVW using Tapatalk 2
Click to expand...
Click to collapse
Why are there so many problems about this thing lately even me, I experience this most of the time
When I use the Best Buy 2.1 amp wall charger I still get the message.
I'll need to find my oem wall charger.
So far every one I have gives this message.
I haven't seen this message at all on any of my charges but I haven't charged in the car yet. My battery usually lasts for more than the while day so I just charge at night.
Sent from my HTC6435LVW using xda app-developers app
Well with the faster charging enabled it does charge pretty quick especially using my nexus 7 wall adapter, even with my Nokia Qi pad. But man that last percent takes a while.
As of now I'm using supercharged hatka ROM slim 3.0.3 and getting good battery life. Even in the middle of nowhere where 75% percent of the time when I'm in the plant its searching for signal. I'll leave work after 8 hours and still be at 60%
Guess you can say its the only negative I have for the phone. Trust me the battery life is much better in the plant then my old bionic. I use to have to change the standard battery after 4 or 5 hours as it was completely dead.
Sent from my HTC6435LVW using Tapatalk 2
Last night I received my daughters replacement Rezound from the warranty company. It came with a 1 amp wall charger.
I plugged it into my DNA and did not get the notice of slower charging and it charged quicker than I've ever seen it.
Too bad my 2.1 best buy one won't.
The quick charge capable chargers must output just slightly higher voltage to trigger the rapid charge mode.
I'll experiment some day and see.
This is a known issue. It all comes down to there being no set standard for USB charging. Android, apple, tablets, they all just seem to do their own thing.
The phone is checking the pins on the charger. If the data pins are shorted, then you get fast charging. If not, then it will default to the slower USB charging.
That last update that came through added that 'Slow Charge' warning. I saw it on my gf's DNA. My DNA is rooted and ROM'd so I don't have that. You can still check for the charging speed on a device by going to the Battery page in the settings. Up on top it with either say AC (which is fast) or USB (which is slow).
The supplied HTC wall chargers have the data pins shorted within them, so any regular USB cable will allow you to charge at the AC rate. You may remember some years ago there used to be Charging Only cables and they were regular USB cables that simply had the data pins shorted.
Most car chargers do not have data pins shorted. I have used a number of different ones from monoprice and none of them will charge at the AC rate.
There are videos on youtube showing how to open them up and solder the data pins. You can look for charging cables on amazon (but that seems lame), or you can find a car charger that just actually works.
There is a cheap Motorola charger on Amazon that will give you the fast AC charge.
https://www.amazon.com/dp/B000S5Q9CA/ref=as_li_ss_til?tag=funkertosh-20&camp=0&creative=0&linkCode=as4&creativeASIN=B000S5Q9CA&adid=131FS8N5R70JPV4QGDCV&
Funkertosh said:
This is a known issue. It all comes down to there being no set standard for USB charging. Android, apple, tablets, they all just seem to do their own thing.
The phone is checking the pins on the charger. If the data pins are shorted, then you get fast charging. If not, then it will default to the slower USB charging.
That last update that came through added that 'Slow Charge' warning. I saw it on my gf's DNA. My DNA is rooted and ROM'd so I don't have that. You can still check for the charging speed on a device by going to the Battery page in the settings. Up on top it with either say AC (which is fast) or USB (which is slow).
The supplied HTC wall chargers have the data pins shorted within them, so any regular USB cable will allow you to charge at the AC rate. You may remember some years ago there used to be Charging Only cables and they were regular USB cables that simply had the data pins shorted.
Most car chargers do not have data pins shorted. I have used a number of different ones from monoprice and none of them will charge at the AC rate.
There are videos on youtube showing how to open them up and solder the data pins. You can look for charging cables on amazon (but that seems lame), or you can find a car charger that just actually works.
There is a cheap Motorola charger on Amazon that will give you the fast AC charge.
https://www.amazon.com/dp/B000S5Q9CA/ref=as_li_ss_til?tag=funkertosh-20&camp=0&creative=0&linkCode=as4&creativeASIN=B000S5Q9CA&adid=131FS8N5R70JPV4QGDCV&
Click to expand...
Click to collapse
I have the charger that came with the phone it it fully charges my DNA in 2 hours from 3%
Funkertosh said:
This is a known issue. It all comes down to there being no set standard for USB charging. Android, apple, tablets, they all just seem to do their own thing.
The phone is checking the pins on the charger. If the data pins are shorted, then you get fast charging. If not, then it will default to the slower USB charging.
That last update that came through added that 'Slow Charge' warning. I saw it on my gf's DNA. My DNA is rooted and ROM'd so I don't have that. You can still check for the charging speed on a device by going to the Battery page in the settings. Up on top it with either say AC (which is fast) or USB (which is slow).
The supplied HTC wall chargers have the data pins shorted within them, so any regular USB cable will allow you to charge at the AC rate. You may remember some years ago there used to be Charging Only cables and they were regular USB cables that simply had the data pins shorted.
Most car chargers do not have data pins shorted. I have used a number of different ones from monoprice and none of them will charge at the AC rate.
There are videos on youtube showing how to open them up and solder the data pins. You can look for charging cables on amazon (but that seems lame), or you can find a car charger that just actually works.
There is a cheap Motorola charger on Amazon that will give you the fast AC charge.
https://www.amazon.com/dp/B000S5Q9CA/ref=as_li_ss_til?tag=funkertosh-20&camp=0&creative=0&linkCode=as4&creativeASIN=B000S5Q9CA&adid=131FS8N5R70JPV4QGDCV&
Click to expand...
Click to collapse
I kinda figured it was something with the pins if I wasn't voltage offset.
I did find that one of my car chargers from best buy runs in quick charge. The cable I fixed, rather than using a usb cable in a slot on the charger.
The best number 2.1 amp wall charger uses a data type cable.
Maybe I'll check into shorting the pins on that sucker to get quick charge mode.
Funkertosh said:
This is a known issue. It all comes down to there being no set standard for USB charging. Android, apple, tablets, they all just seem to do their own thing.
The phone is checking the pins on the charger. If the data pins are shorted, then you get fast charging. If not, then it will default to the slower USB charging.
That last update that came through added that 'Slow Charge' warning. I saw it on my gf's DNA. My DNA is rooted and ROM'd so I don't have that. You can still check for the charging speed on a device by going to the Battery page in the settings. Up on top it with either say AC (which is fast) or USB (which is slow).
The supplied HTC wall chargers have the data pins shorted within them, so any regular USB cable will allow you to charge at the AC rate. You may remember some years ago there used to be Charging Only cables and they were regular USB cables that simply had the data pins shorted.
Most car chargers do not have data pins shorted. I have used a number of different ones from monoprice and none of them will charge at the AC rate.
There are videos on youtube showing how to open them up and solder the data pins. You can look for charging cables on amazon (but that seems lame), or you can find a car charger that just actually works.
There is a cheap Motorola charger on Amazon that will give you the fast AC charge.
https://www.amazon.com/dp/B000S5Q9CA/ref=as_li_ss_til?tag=funkertosh-20&camp=0&creative=0&linkCode=as4&creativeASIN=B000S5Q9CA&adid=131FS8N5R70JPV4QGDCV&
Click to expand...
Click to collapse
The phone is doing more than checking pins now. I have a 2.1 Amp dual charger with pins shorted and get the warning. It happily charged in AC mode before the update. The charger can also charge a nexus 10 at 2 Amps. I'm guessing the kernel devs will have to locate the source of the warning. I thought the resistance between the data pins might be the trigger, but there is no difference between the HTC charger and my dual charger. It does seem my car charger is unaffected.
I have found that to trick the phone into AC mode you have to short the the actual cable. Hence strip the insulation off the wires and short the data wires together. Has worked for me on all my chargers.
Sent from my HTC6435LVW using Tapatalk 2
This message does not have to do with the update. I have still not updated my DNA and have been struggling with this for about 6 or 8 months. I am on 2.08. The issue has continually gotten worse since the first time I saw it. At first it would just appear about 1 in 10 times I plugged it in to a car charger. It then got to the point where it would only not show the message with a certain car charger. Now it is showing it on the one car charger that works, but if I mess around with it and unplug and replug it a few times it will finally charge normally. The last few days it has started showing the message on the OEM charger. I have cleaned out the port on the phone and cables quite a few times now, but it doesn't help. I found that doing that only helps if it gets really full of lint and the cable rocks in the port causing it to loose connection if you move it, but it does not change the slow charging message at all. The phone is also definitely not charging at full speed when that message is shown. If I have it plugged in and it shows that message my battery actually drains if the screen is on. With the screen off I only gain about 10% per hour. I am not sure where the issue is, but I think it is different in different circumstances. In my case I think it is the phone itself, but from what I have read about others experiences it seems their problem might be the charger/cord. I hope this gets sorted out soon.
Clay333 said:
This message does not have to do with the update. I have still not updated my DNA and have been struggling with this for about 6 or 8 months. I am on 2.08. The issue has continually gotten worse since the first time I saw it. At first it would just appear about 1 in 10 times I plugged it in to a car charger. It then got to the point where it would only not show the message with a certain car charger. Now it is showing it on the one car charger that works, but if I mess around with it and unplug and replug it a few times it will finally charge normally. The last few days it has started showing the message on the OEM charger. I have cleaned out the port on the phone and cables quite a few times now, but it doesn't help. I found that doing that only helps if it gets really full of lint and the cable rocks in the port causing it to loose connection if you move it, but it does not change the slow charging message at all. The phone is also definitely not charging at full speed when that message is shown. If I have it plugged in and it shows that message my battery actually drains if the screen is on. With the screen off I only gain about 10% per hour. I am not sure where the issue is, but I think it is different in different circumstances. In my case I think it is the phone itself, but from what I have read about others experiences it seems their problem might be the charger/cord. I hope this gets sorted out soon.
Click to expand...
Click to collapse
It could be the charging equipment your phone or it could also be the power source not providing enough power to the device for it to charge fast so it charges slow.
Sent from my HTC6435LVW using XDA Premium 4 mobile app
so couple months ago i had this problem where my phone when plugged into the socket would come up as usb charging on my phone instead of ac and after a while stopped.. i solved that by cleaning out the charging port of my phone.
anyway now after those couple months couple days ago i realized that my phone when u plugged it in to the socket would come up as usb charging instead of ac charging again...and when i plugged it into my pc... the pc wouldnt recognize it at all... btw im using the original samsung charger.
when i use a next usb in the socket it comes up as ac charging and when i plug it into my pc it picks it up...
is it that my charger is due for a change? or could it just be some minor adjustments to fix the problem?
Try other charger.. if the problem is in your charger then change the charger or simply factory reset
Sent from my GT-I9300 using XDA Premium 4 mobile app
4823299329
did you root your phone? and which rom are you using?
for a rooted samsung stock rom or cyanogenmod rom i would recommend installing boeffla kernel and boeffla config v2 application. then use the application to read the exact value at what rate does your phone charge. it is shown in mA.
if the values is too low,you can play with few options the kernel provides. you can put higher charging rates for usb and ac charging. though you better not play with those. the ones you can play with is to avoid unstable input current. read boeffla's readmen before,it is very informative
maybe charging port problem
Try going to servce cntre and check your charging port and connector.
thx all
i just simple changed my usb and all is fixed thanks for all the replys
Awesome
Sent from my GT-I9300 using XDA Premium 4 mobile app
Hello,
Lately I've been having a weird issue with charging my I9300 device:
When I charge the device using the charger (which is original, by Samsung) , sometimes it takes a huge amount of time to charge, and if I also use the device (even for simple things) it actually drains the battery instead of charging it.
I've installed "Galaxy charging current" app, which also shows weird results:
When I have this issue, the average/maximum value is about 400mA or even 100mA , but when I disconnect the USB from the device and reconnect it, the values can change to 900 or 999 or even a bit higher.
My device is running on CM rom version "11-20140612-NIGHTLY-i9300" .
I'm not sure if it's related to the rom , the kernel or something about the hardware.
I've checked the battery status by going to a hidden (?) setting (using my app btw) of "Testing"->"Battery information", and saw that for "battery health", it says "Good". Attached a screenshot of what I see.
Can anyone please help?
Also, is there maybe an app that can warn me when the device is being charged yet it has the battery being drained? Or maybe give me an estimated time till the battery will finish being charged? I also hope that such an app won't drain the battery by itself...
This behaviour is caused due to the inbuilt charging protection mechanisms.
Its usually the cable. Samsung one is known to be crappy. Get a proper one and try.
If you are still experiencing issues plug it in to a different port. Front panel USB ports are sometimes too weak to supply high currents
Sent from my GT-I9300 using XDA Free mobile app
nkirk said:
This behaviour is caused due to the inbuilt charging protection mechanisms.
Its usually the cable. Samsung one is known to be crappy. Get a proper one and try.
If you are still experiencing issues plug it in to a different port. Front panel USB ports are sometimes too weak to supply high currents
Sent from my GT-I9300 using XDA Free mobile app
Click to expand...
Click to collapse
Is it possible it's just the cable and not the charger?
I thought that cables are "stupid" .
EDIT: that's weird.
I tried 2 other cables: an old one of LG, and a new one of Chromecast. Both showed about 460mA in the app, no matter how many times I re-connected the device to them.
I've also tried to connect the Samsung's USB to the computer's front USB, and it gave me 400mA, but I think this is more expected.
Do you think that using a different new USB cable will solve it? or maybe it's the charger?
EDIT: just tried a new Samsung USB, and it seems to work just fine.
I didn't know USB cables are so different.
i olso had problem with charging..stock charger ...slow charging and battery drain on charge ....it was a problem with wall charge unit ...i used other phone's charger but max on that was 700 mAh and phone charged normaly.(but slowly)..now again my stock charger is working again plus i have 2m cable aftermarket ....can that be a softvare issue...if unit isn't good than it souldn't charge now normaly
Hi all, I have problem with my HDX 7 Unlock BL and Recovery TWRP 3.0.0.
About from ten days up to now, my HDX 7 charge very slow with any charge HTC, Xiaomi, LG (I can not try with original HDX Charge which due to loss it some months ago). I use CM 12.1 dated 10 Jun 16 and also try all CM11 roms. When plug charge to HDX, I check information in Battery section of Setting that has report "charging by USB" but few seconds next change status to "not charging" and again and again.
What is the problem? How can I fix it?
Many thanks any comments.
Sent from my Redmi Note 3 using XDA-Developers mobile app
My kindle charge slow and PC won't detect.
I have the problem that PC can't detect my kindle hdx7. And my tablet charges slowly with wall charger.
This is because one day I charged it with my Quick Charger 2.0. I think that was the reason, and charging circuit has been damaged.
Is it be a real cause?
Does any one has the solution?
teerus said:
I have the problem that PC can't detect my kindle hdx7. And my tablet charges slowly with wall charger.
This is because one day I charged it with my Quick Charger 2.0. I think that was the reason, and charging circuit has been damaged.
Is it be a real cause?
Does any one has the solution?
Click to expand...
Click to collapse
Highly doubt the charging circuit is damaged. Nor is it likely a visit with the Quick Charger triggered the anomaly. Far more probable is a problem with the USB cable and/or the USB socket on the HDX. Loose connectors are common especially if care is not taken when plugging/unplugging. Lack of a data connection support this opinion.
Reboot your HDX and try a different USB cable. What is the wall charger rating (should be on the back represented in mAh)? 3rd gen HDX devices can accept charge rates up to 1800 mAH although using a 'stronger' charger won't hurt provided the voltage rating is the industry standard 5V.
Hi
Thanks Davey126
.
I purchased this tab from a local shop. I tested it on shop, everything was fine.
But when I bring home, and I connected it with my Sony QC 2.0 and I observed charging was slow. I ignored it.
Next day I connect with my pc to copy some movies, but computer didn't respond. I tested my tab with different data cables and on another PC, but no success. Then I did Factory reset, but no difference.
.
I went to shop and got exchange the tab. At shop I tested charging, and PC connectivity. Everything was working fine at there.
I got back home, and again connected with my QC 2.0 charger (until then i did not know the cause). This time I see tab show SLOW charging.
I connected to my PC, same issue, no any detection. Tab only show charging when connected to PC. I repeated all possibilities again to resolve the issue.
At last, I assumed that it was because it may be due to miscommunication between device and charger, and maybe 9V damaged the charging circuit of the Tab.
teerus said:
Hi
Thanks Davey126
.
I purchased this tab from a local shop. I tested it on shop, everything was fine.
But when I bring home, and I connected it with my Sony QC 2.0 and I observed charging was slow. I ignored it.
Next day I connect with my pc to copy some movies, but computer didn't respond. I tested my tab with different data cables and on another PC, but no success. Then I did Factory reset, but no difference.
.
I went to shop and got exchange the tab. At shop I tested charging, and PC connectivity. Everything was working fine at there.
I got back home, and again connected with my QC 2.0 charger (until then i did not know the cause). This time I see tab show SLOW charging.
I connected to my PC, same issue, no any detection. Tab only show charging when connected to PC. I repeated all possibilities again to resolve the issue.
At last, I assumed that it was because it may be due to miscommunication between device and charger, and maybe 9V damaged the charging circuit of the Tab.
Click to expand...
Click to collapse
The Quick Charge standard allows for connection to older devices that do not support QC technology. In that case the charger should limit output to 5V as a significantly higher voltage would likely damage the charging circuit. Either the HDX did not communicate its capabilities properly or the charger cranked up the voltage when it should have remained at 5V.
The maximum charge rate for 3rd gen HDX device is ~9 watts (5V x 1.8A). Yet many vendors target this device for 18W+ QC 2.0 chargers that supposedly reduce charge times by 50% (they won't). Despite the faux claims there does not appear to be widespread complains of device damage. It would appear your Sony 2.0 QC charger may be defective.
Davey126 said:
The Quick Charge standard allows for connection to older devices that do not support QC technology. In that case the charger should limit output to 5V as a significantly higher voltage would likely damage the charging circuit. Either the HDX did not communicate its capabilities properly or the charger cranked up the voltage when it should have remained at 5V.
The maximum charge rate for 3rd gen HDX device is ~9 watts (5V x 1.8A). Yet many vendors target this device for 18W+ QC 2.0 chargers that supposedly reduce charge times by 50% (they won't). Despite the faux claims there does not appear to be widespread complains of device damage. It would appear your Sony 2.0 QC charger may be defective.
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Thank you for your concern and collect info about HDX7.
I am a little-known of Quick Charger mechanism. "9V or 12V and 5V". QC 3.0, 4 or 4+. [A Quick Charger does not damage a normal 5V device.]
I charge all my home devices with Sony UHC10 quick charger. I think my charger is working normal as I do not see any abnormal behavior of it.
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I can not find any other reason to damage my Tab.
Now my question is that, "is there any (alternative) way to resolve slow charging, also PC sync.
Thank you again!
teerus said:
...Now my question is that, "is there any (alternative) way to resolve slow charging, also PC sync.
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Recommend acquiring a 'standard' 5V wall charger with a 2A minimum rating. This will permit your HDX to charge at the maximum rate (~1.8A) assuming the USB cable is in good shape. Performing this test will help determine if the charging circuit in your device is operating properly.
Most computers/laptops can only deliver a fraction of the maximum charge rate: ~0.5A for USB2 ports; ~0.9A for USB3.
Davey126 said:
Recommend acquiring a 'standard' 5V wall charger with a 2A minimum rating. This will permit your HDX to charge at the maximum rate (~1.8A) assuming the USB cable is in good shape. Performing this test will help determine if the charging circuit in your device is operating properly.
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After realizing this problem I am using 2.1A branded charger, but still slow charging.
With Ampere app it shows max 280mA (same as UHC10). It means it is charging at standard rate of 500mA.
Changing the cables does not make any difference. (I have ANKER data cable)
THANKS
teerus said:
After realizing this problem I am using 2.1A branded charger, but still slow charging.
With Ampere app it shows max 280mA (same as UHC10). It means it is charging at standard rate of 500mA.
Changing the cables does not make any difference. (I have ANKER data cable)
THANKS
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Anker cables have a solid reputation. That said, I would double check with another cable.
If cable and charger seem ok then it boils down to termination points (USB connections {should be snug}), imbedded charging circuit and/or kernel. There is nothing you can do about the kernel on a stock HDX. Nor can the charging circuit be repaired short of main/daughter board replacement.
Long shot suggestion: fully power down device and restart after 5-10 seconds. This will insure the bootloader/kernel are fully reset.
BTW - info I provided on QC standards and HDX capabilities are primarily from direct experience backed up by supporting documentation. This isn't just theoretical - I have a handful of HDX devices along with numerous USB meters as charging circuit efficiency (and deficiencies) is something of a personal interest.
@Davey126
Thank you very much
And big thumbs up :good:
I'll try it tonight and then update you as earlier as possible.
@Davey126
I drained my tab battery and then recharge it again but no difference. It woke up after 5 minutes. Still very low rate charging. Ampere app shows 280mAh maximum.
Meanwhile I brought my cousin's (same) tab. With 2.1A it shows +1500mAh on Ampere app. I drained it's battery, and when started charging, it was charging normally. Again in Ampere app @ +1500mAh.
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I do not want to damage it's charging circuit. So I will not connect it with Sony UHC10.
So it is clear that charging circuit is damaged,in my tab.
If I find any solution, I'll share it here. Till then I'll use it by charging whole night (for 6 hours) everyday. Because it takes 6 to 8 hours to charge 100%.
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Thank you for your cooperation.