Database Users

[Q] slow charging

I love my G2 and have been running it stock unrooted for almost a week now but I'm confused about the charging speed. I have two LG phones, the G2 d800 and Optimus G Pro e980. My G Pro is rooted running a custom 4.3 Rom.
My issue is when I plug the G2 to my computer using the stock cable it came with from the store it immediately goes to slow charging mode. It'll take hours and hours to charge up from about 50%. With the same exact cable setup when I plug my G Pro it only takes about a hour and a half to charge to 100% and that's from about 15 - 20%. This makes me think it has nothing to do with the cable I'm using. It's plugged directly to a USB 3.0 port in the back of my computer. If I use the wall charger with the same cable the G2 charges just fine. idk.
My G Pro used to have this issue but after going custom roms it never had that problem again... it always charges crazy fast now. I don't really want to install custom on my G2 right now I'm actually enjoying the stock experience again I was missing it with my G Pro.
Anyone else have this issue?

It has everything to do with cable, and kernel/binaries. USB 3 and steady voltage requires a thicker power AWG. The kernel and or binaries limit it to slow charge per voltage for safety and stability. The phone states it's USB 3 capable, but I assume only on the power side, as the 5 pins on the phone isn't enough to handle the full data speeds of USB 3, it requires 9. If you look inside the port though, on the phone, there looks to be extra pins.... maybe LG plans to release a special USB 3 cable? Just speculation. http://forum.xda-developers.com/showthread.php?t=2460881

I noticed that when stock, or using stock-based ROM's it goes into slow charging mode if you use anything other than the stock LG charger and cable. When I install CM10-11 it charges fast on all cables.

It does not. Use a mA reader. The notification is just simply removed.

hmmmm now I'm wondering if the battery level my G Pro is showing me is accurate or what.. the G2 battery lasts considerably longer than the G Pro when both say they're fully charged. I'll try new cables and maybe finally get a second battery for my G Pro and see if it still charges as fast as it's saying. Thanks for the replies guys. :good:

They are both charging at the same rate. The G2 just has a higher capacity. The notification seems to pop at 1A or lower. You're gonna need a high quality 24 AWG or lower cable to draw high amperage from the phone. I posted a working one from newegg. The stock G2 cable will also fast charge it from the USB 3 port (if the port is configured correctly with good drivers for charging switch). The problem is voltage droop in combo with this phones kernel or binaries. There isn't much getting around it on the USB port. A quality cable will counteract this with less droop on the bottom end.

[Q] Nexus 7 (2012 WiFi) charging problem.

Hello!
I have a Google Nexus 7 2012 WiFi (grouper) tablet. 16GB version.
I recently formatted it to F2FS file system and installed SlimKat rom 4.4.4.build.9.0-8258
with TWRP 2.8.5.1 It is not rooted yet (postponed it because laziness).
Starting from today for some reason my recently bought 2.1A charger was barely charging my Nexus 7. Before it was working very well. Charging as supposed to,even when watching videos. I had an idea to check the amps coming in from the charger, so I installed Ampere app which measures charging current. To my surprise, Nexus 7 was taking barely 150 miliamps. Sometimes it would jump to 400, even up to 550, then it would drop to 40 and sometimes even to 0 for a few seconds, when in reality it should be charging stable 1500 miliamps.
I decided to check the same cable with the same Ampere app on my Samsung Galaxy S3. To my surprise again, Galaxy was charging with very stable 1000 miliamps just like it is supposed to. I tried several other Samsung cables and they were giving about 500ma to Nexus, although it was constantly jumping somewhere between 400-550. Using the same cables on Galaxy I would get 600 or 700 stable miliamps of charging.
I cannot explain this. All the cables give unstable charge to Nexus, as opposed to stable and higher charge to Galaxy. And especially the cable with 2.1 amps (Travel charger from a Polish brand Forever, without detachable cable - not a cheap one) , meant for tablets is giving the worst and most unstable charge. And it has been charging without problems before, and still is - just not my Nexus.
So I can only assume that the problem is either with charging port on Nexus, or something is wrong with battery? Could it somehow be the new ROM + file system? I find it very unlikely but still can't completely rule out without listening to your opinions.
Thanks in advance,
viuksuns

Battery drain and long charges, please help!

So, I recently changed the battery on my N7 (Pure Nexus ROM 6.0.1 with ParrotMod) and started to notice that battery only lasts about 3 to 5 hours, and around 2 and a half with video playback.
Also, a charge from 10% to 100% takes around 12 hours to complete and charges very little or nothing at all when the tablet is powered off.
I thought that the charger was causing the problem (I was using a Galaxy S4 mini charger) but even with the Samsung Galaxy S6 Edge charger (which supposedly has the same input and output as the N7 one's) I got the same results. I also read that the charging port might be misplaced, but that didn't seem to be the case either...
What's happening? HELP!

It 's probably a wrong charger. Use 10w (5v 2amp) one. Generic one can be bought at eBay for around $3. I have same setup on N7 - PN with Parrot Mod, full charge 2-3 hrs at the most
Sent from my Nexus 4 using Tapatalk

First off, use a genuine charger that comes with the device. If problem still persists, it could be the defective charging port that caused the problem. Try changing one by yourself or by having it replaced.

I have had the same problem. I bought my nexus second hand...and the guy said that the battery was broke but it run... So I have checked everything I have installed several roms and bought another battery but same problem... Then I have checked the USB and on the connection to the flat cable is a black thing to attemp the cable to the USB thing. So I closed the thing and it runs. Now battery loads fast again. Maybe the guy before me replaced the USB and missed to check the flatcable connection...

Observations on charger port burn out problems

I have read from various sources about the Leeco 727 dying a premature death due to burn out of the charger port. Some theories attribute it to bad Leeco supplied charging adapter or cable or faulty motherboard.
I tried a bunch of different wall adapters and cables to see if I could make some sense of it. What I noticed is that only with the Leeco supplied unit and an Anker dual port unit do I get any semblance of fast charging. There is no indicator on screen. I can only go by time observation.
Charging with other fast charge adapters seem to charge at a slower pace at 5 volt. From what I can see using a USB port tester is that when something charges at fast charge, it charges at 9 volt. I used a Samsung adapter and one from an orbic wonder which are definitely fast charge capable. They charge my old Motorola G4 at "turbo power" and a Note 4 at "fast charge".
I bought a unit from Allmaybe that has visual lcd of power consumption and it clocked down to a lower voltage after tripping the overpower indicator.
Maybe we need to throw away the Leeco wall adapter. It's possible that either it or the phone is drawing too much electricity for the port to handle.

tekweezle said:
I have read from various sources about the Leeco 727 dying a premature death due to burn out of the charger port. Some theories attribute it to bad Leeco supplied charging adapter or cable or faulty motherboard.
I tried a bunch of different wall adapters and cables to see if I could make some sense of it. What I noticed is that only with the Leeco supplied unit and an Anker dual port unit do I get any semblance of fast charging. There is no indicator on screen. I can only go by time observation.
Charging with other fast charge adapters seem to charge at a slower pace at 5 volt. From what I can see using a USB port tester is that when something charges at fast charge, it charges at 9 volt. I used a Samsung adapter and one from an orbic wonder which are definitely fast charge capable. They charge my old Motorola G4 at "turbo power" and a Note 4 at "fast charge".
I bought a unit from Allmaybe that has visual lcd of power consumption and it clocked down to a lower voltage after tripping the overpower indicator.
Maybe we need to throw away the Leeco wall adapter. It's possible that either it or the phone is drawing too much electricity for the port to handle.
Click to expand...
Click to collapse
Their threads on this.
Sent from my LEX727 using xda premium

A device like yhis Xdragon USB voltmeter might be helpful in debugging issues with charging.
Right now I am connected to a Samsung adaptive fast charger that can pull 9 volts but currently just pulling in 4.78 volts and about 700 mAh. At that rate will take about 5 to 6 hours to fully charge the 4200 mAh battery in the Leeco

tekweezle said:
I have read from various sources about the Leeco 727 dying a premature death due to burn out of the charger port. Some theories attribute it to bad Leeco supplied charging adapter or cable or faulty motherboard.
I tried a bunch of different wall adapters and cables to see if I could make some sense of it. What I noticed is that only with the Leeco supplied unit and an Anker dual port unit do I get any semblance of fast charging. There is no indicator on screen. I can only go by time observation.
Charging with other fast charge adapters seem to charge at a slower pace at 5 volt. From what I can see using a USB port tester is that when something charges at fast charge, it charges at 9 volt. I used a Samsung adapter and one from an orbic wonder which are definitely fast charge capable. They charge my old Motorola G4 at "turbo power" and a Note 4 at "fast charge".
I bought a unit from Allmaybe that has visual lcd of power consumption and it clocked down to a lower voltage after tripping the overpower indicator.
Maybe we need to throw away the Leeco wall adapter. It's possible that either it or the phone is drawing too much electricity for the port to handle.
Click to expand...
Click to collapse
The charger is fine, it was built according to qualcomm specs: https://www.qualcomm.com/media/documents/files/quick-charge-device-list.pdf
The Issue is that alot of phones were sent out with bad cables.

I don't think that it's just the cable.
I have been seeing hard shut downs while charging at night. It's not consistent so I am just going slow I suspect that the phone is shutting off to prevent overcharging the battery.
I have 2 x727 with asop extended 8.1 and blackscreen kernel 4.9 installed
I replaced the original LeEco USB C cable with a genuine Samsung USB C cable per the recommendation of other threads. "no change still shut down while charging overnight"
I suspect that it is a kernel battery issue so I backed up in twrp and I installed the regular version 4.9 of the blackscreen kernel. "no change the phone is still shutdown occasionally while charging overnight on a original leeco charger with a Samsung USB C cable"
So now I am trying both a Samsung charger and Samsung cable. I should revert back to the twrp kernel backup but blackscreen kernel is just too awesome!
The Samsung charger only outputs at 5.3V @ 2.0A
The LeEco charger outputs at 3.6v to 8v @ 3.0A or 12v @ 2.0A
I'm pretty sure that the problem is a software issue with the quick charge 3.0 voltage controls in the rom itself but I haven't gotten a log of the shutdown yet to confirm that because I haven't rooted the phone. The phone was getting uncomfortably warm when charging.
I'm betting that with the Samsung Oem quick charge 2.0 charger the phone will work properly without shutting down overnight.
I'll update this post with my results.

dlradlt said:
I have been seeing hard shut downs while charging at night. It's not consistent so I am just going slow I suspect that the phone is shutting off to prevent overcharging the battery.
I have 2 x727 with asop extended 8.1 and blackscreen kernel 4.9 installed
I replaced the original LeEco USB C cable with a genuine Samsung USB C cable per the recommendation of other threads. "no change still shut down while charging overnight"
I suspect that it is a kernel battery issue so I backed up in twrp and I installed the regular version 4.9 of the blackscreen kernel. "no change the phone is still shutdown occasionally while charging overnight on a original leeco charger with a Samsung USB C cable"
So now I am trying both a Samsung charger and Samsung cable. I should revert back to the twrp kernel backup but blackscreen kernel is just too awesome!
The Samsung charger only outputs at 5.3V @ 2.0A
The LeEco charger outputs at 3.6v to 8v @ 3.0A or 12v @ 2.0A
I'm pretty sure that the problem is a software issue with the quick charge 3.0 voltage controls in the rom itself but I haven't gotten a log of the shutdown yet to confirm that because I haven't rooted the phone. The phone was getting uncomfortably warm when charging.
I'm betting that with the Samsung Oem quick charge 2.0 charger the phone will work properly without shutting down overnight.
I'll update this post with my results.
Click to expand...
Click to collapse
Have you tried simply reflashing the correct firmware?
I too have a X727 and had similar issues in the past while using a firmware designed for the X720, and alot of of Rom's come with the X720 firmware.
Try flashing the kernel from my Google Drive link below and see if that helps.
https://drive.google.com/open?id=1qAJrM8bIfI190W9w2gKR97xVhA-2lrZt

Meh 2 phones same software with different results.
I still don't really know why it was shutting off while charging overnight.
But the problem hasn't repeated itself since I stopped using one of the LeEco chargers. So at the moment I am blaming it on a bad charger base or wonky phone charging circuit, not the cable.
I was thinking my problem was software but I had already changed my roms Kernel to the appropriate blackscreen kernel from the roms stock kernel and the problem persisted on her phone until I stopped using the one included LeEco charger on my wife's phone, it's charging fine on the Samsung 2.0 quick charger, and mines charging without issues on the second LeEco 3.0 quick charger.
Unfortunately I can't just wipe her phone without causing her problems because she is always on her phone.
Is the problem hardware related in her phone is my current question? Or am I tracking a bug in the software.
If the problem is that charger base it should have zero effect if I put her phone on the 3.0 charger that I am using. If it is her phones charging hardware that test could permanently brick the phone Fry the charge port or battery ect...
So I am going to order another x727 if I can find another new one on ebay apparently most of the new US inventory is gone and the price is being gouged on the last of the new ones. :crying:
That way I will have a backup so I can do that test and have a phone to use for development. That's why I bought this phone in the first place.
I'm pretty sure that the one charger base is the whole problem but I can't afford to test that theory yet.

dlradlt said:
I still don't really know why it was shutting off while charging overnight.
But the problem hasn't repeated itself since I stopped using one of the LeEco chargers. So at the moment I am blaming it on a bad charger base or wonky phone charging circuit, not the cable.
I was thinking my problem was software but I had already changed my roms Kernel to the appropriate blackscreen kernel from the roms stock kernel and the problem persisted on her phone until I stopped using the one included LeEco charger on my wife's phone, it's charging fine on the Samsung 2.0 quick charger, and mines charging without issues on the second LeEco 3.0 quick charger.
Unfortunately I can't just wipe her phone without causing her problems because she is always on her phone.
Is the problem hardware related in her phone is my current question? Or am I tracking a bug in the software.
If the problem is that charger base it should have zero effect if I put her phone on the 3.0 charger that I am using. If it is her phones charging hardware that test could permanently brick the phone Fry the charge port or battery ect...
So I am going to order another x727 if I can find another new one on ebay apparently most of the new US inventory is gone and the price is being gouged on the last of the new ones. :crying:
That way I will have a backup so I can do that test and have a phone to use for development. That's why I bought this phone in the first place.
I'm pretty sure that the one charger base is the whole problem but I can't afford to test that theory yet.
Click to expand...
Click to collapse
You can buy usb voltage testers on Amazon.
If you happen to have a bad charging block just toss it, and buy a universally compatible Qualcomm Quick Charger. Such as this one: https://www.amazon.com/Charge-Anker-Charger-Compatible-PowerPort/dp/B016LO811S

Blitzwolf quickcharger and C cables. Bought 3 of each. All my charging issues disappeared when I bought them. Leeco supplied cable/charger are crap, why risk it?

FYI, I have experienced the condition where my charging stops randomly when using 2 different decent Samsung Travel model fast chargers. Stopped around 49% to 85%
Neither pulled in fast charging voltage-drawing a little under 5 volts and maybe 1100mah, as compared to 9 volts when connected to the Leeco charger.

Good point. Charger blocks are cheap phones aren't.

As addendum to this issue, after a year and half my charger port finally burned out. Probably abused the phone a bit and got some moisture in the port, maybe it was just a matter of time.
I was able to resurrect the phone though. The actual replacement board is available on eBay for $5-10 with tools. Hardest part was using a heat gun to remove the screen. There are guide on how to open up this unit.
One thing I will tell you I am that you don't need to remove the battery to get to the USB board.

Just another note, either hitting my phone with the heat gun or mucking around with the battery unnecessarily caused the battery to start to malfunction. Battery would discharge quickly and phone would shut off randomly. I replaced the battery with some cheap replacement from China, cost about $16.
Also replaced the screen because I tore the ribbon cable by accident. The screen cost about $13. Definitely cheaper than an iPhone replacement!

Help: Problem with Fast Charging

I bought my galaxy note 4 in Saudi Arabia and It's been 6 years until my phone fast charging has stopped working. I don't have idea how did it stopped working. I've changed different charger together with different cable but nothing happened. A charger with same output and a cable that holds up to 2.1 A. Nothing happened. So I decided to go to service store and they changed my flexy charge kinda thing. And they said It's probably something wrong with the IC on processor or in the machine. My guess was fast charging doesn't work because the USB port has damaged *probably, so by replacing the USB port will work again. I kinda think that they replaced the sparepart with replica or I could say grade AAA and not with the original (which an average store can't provide such a thing). And yeah I go to an average store which I read on Google review with around 300 people giving 5-4 stars.
And yes I did go to Samsung store first and for some reason they can't fix my phone unless I accept my risk that fixing it will make the phone dead. And it cost higher for like over 50 pound. That cost could get me a new phone lol. Probably because I bought from overseas.
I'm frustrated with this issue regarding with normal charge I had to wait for hours just to charge until full battery. And yet while this battery comes with 3000 mAh, it depleted fast like around 6 hours while using productively. I admit this phone was the best at its generation. To be exact, I charge my phone from 0%-20% around an hour. So to go full battery, I must charge for around 6 hours or let it charge for the night.
My question is:
1. How does fast charging works? Is it really the processor that controls current output? Or somehow just change the flexy charge will make it works again?
2. If somehow I can't stand with this phone, which Samsung phone that actually more reliable and great than my galaxy note 4? (I kinda like Samsung A series, it comes with cheaper price with alot advantages but you guys can give me options)

I assume you already checked that. But just in case. You checked settings->battery->fast cable charging ?
Turn off and on...
And with something like this: https://www.amazon.com/gp/product/B07JYVPLLJ you can check that fast charging works. Should go to higher voltage if it works.
Fast charging can stop working because of the USB cable. I had to change cables a couple of times when fast charging stopped working with them. So I can imagine that USB port can affect it. It is controlled by the processor, which is why some kernels don't have fast charging.
You can replace the USB port on the note 4. It only costs $10 on ebay. But it is not an easy replacement, because you have to separate the screen. I managed to break my screen doing that.
You can also try to buy several replacement batteries for your phone, and an external charger. Then walk around with a replacement battery, and when the battery dies, pop another one in. And charge the old one in the charger. That could also solve your battery problems, because it could be that your battery is old. (and the standard battery on the note 4 is 3220 mAh, not 3000mAh. I saw a video on youtube claiming that fake note 4 came with a 3000 mAh battery)
The best phone to replace the note 4? That's pretty easy to answer - another note 4.
Some people like the note 9 very much. Of course it doesn't have all the features that our note 4 has! The LG V60 also looks nice.

Oh yeah, I also checked the settings and yet nothing happened. Thanks! I'll check that later.
So the fast charging controlled by processor. But is there any possibility by tiny little piece in a processor has damaged and that's why the fast charging has stopped? I did told the service store to change flexy charger as many as possible, but still it's not working. And I told them to replace my usb port on my stock flexy charger, and still it can't do the thing
Sorry I seem misspelled there, my battery comes with 3220 mAh, so my phone is genuine from Samsung.
Thanks for the advice! I somehow found desktop charger that it looks like this, www\amazon\com\Universal-External-Charging-T-Mobile-SmartPhone\dp\B00PC06MJ6 , do you think it will let charge?