Develop Bugs

charging problems

hello.
i have arhd 3.3, 12.41 radio.
i put my phone into wall socket last night at 23 30 and this morning at 5:30 phone was still charging at 73%. at 6 30 it was at 83%. then i switched it off and back on, pluged the charger in, and the led went green in like 2 minutes.
what's this? i have the phone for 3 days now. does it take that long to charge or is it a rom problem? i am using the original charger.

looks like a rom problem. Best way to know will be trying different roms.

dont know if it is a rom problem. i think is a radio problem.

install current widget and see what the input milli ampage is. This should give you an idea of if your having a charging issue. Also when you have charged to true 100% (Not when the LED goes green but when current widget says you are no longer receiving a current (0 Mah)) then reboot to recovery and wipe the battery statistics.
I can't see the radio giving you an issue on charging, unless it was using almost more juice than you are putting in. The only time I have ever seen that behaviour is when using a USB charging cable and navigation at the same time.
Hope this helps.

i am using the charger that came with the device that uses indeed an usb cable connected to it.

gangstar said:
i am using the charger that came with the device that uses indeed an usb cable connected to it.
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I meant a USB only (not original) charger. As the charger supplied is actually a wall charger and is rated to supply the device with more "juice" than a standard USB socket (i think are rated for 1mah charging??)
The scenario I am using is when you use a phone for navigating and have it plugged into a 12v socket in a car using a USB adapter which will only give the lowest permitted power rating.

so......i think i have a problem.
when i plug the phone into the wall socket it says charging(usb)
when i plug it in laptop usb using the cable the same charging(usb).
wasn't it supposed to say charging(ac)?

gangstar said:
so......i think i have a problem.
when i plug the phone into the wall socket it says charging(usb)
when i plug it in laptop usb using the cable the same charging(usb).
wasn't it supposed to say charging(ac)?
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Click to collapse
Not sure about that, but even so my DHD will charge from flat in less time than yours was plugged in, how warm / cold was the room you had the phone charging in? Possibly it's getting too hot whilst charging which would lead to the phone reducing the charge rate?

now it;s on charge from about 30 min. it's not even warm. the battery is reported to have 27*

You might be having a damaged battery try replacing it with a new one.

the phone is new.
could it be because of setcpu 230-1228?

gangstar said:
so......i think i have a problem.
when i plug the phone into the wall socket it says charging(usb)
when i plug it in laptop usb using the cable the same charging(usb).
wasn't it supposed to say charging(ac)?
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Click to collapse
Yes I think it's supposed to say charging AC. Try cleaning the usb connectors thoroughly.

Yeh being informed that it is chargng over USB when in the well is definitely wrong. I suggest trying to get another cable or something like a newer style blackberry charger.
Sent from my Desire HD using XDA App

how long does it take to charge the nexus 7 FHD?

mine seems to charge to slow, or maybe cuz im not using the stock cable and im using my usb ports on computer
but if i have stock charger on wall outlet, how long is the charge top up take from 10% to 100%, thanks

yea mine is charging slow through the computer but I dont know if its because of the nexus 4 usb cable im using.

Hello,
http://forum.xda-developers.com/showthread.php?t=2380875&highlight=charge
Best regards,
pootney

TG2708 said:
yea mine is charging slow through the computer but I dont know if its because of the nexus 4 usb cable im using.
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Click to collapse
Obviously charging through a 500mAh USB 2.0 port would be slower then through a 1.35A wall charger.

can I use 2A charger?

Yes you can use a 2amp charger I was using my S4's and it charged fast
Sent from my totally stock Nexus 7 FHD

Interesting, I've only charged mine twice since getting it last sunday, and I've not paid any attention as to how long it's actually taking, one was through a proper charger, and finally today plugged into my computer

The New N7 ships with a 1.3 amp charger, and it's definitely slower to charge than the old N7 (which shipped with a 2.1 amp supply).
But I have yet to determine if putting a higher current supply on the new N7 will result in more current being delivered than the stock charger.

angry english said:
Yes you can use a 2amp charger I was using my S4's and it charged fast
Sent from my totally stock Nexus 7 FHD
Click to expand...
Click to collapse
thanks, I will try to see how much it will be faster or not

It takes about 3 hours to charge from 0% to 100% with the charger it came with. Using a 2 amp charger doesn't decrease the time, as the device will charge at a maximum of about 1100-1200 mAh.

rmkilc said:
It takes about 3 hours to charge from 0% to 100% with the charger it came with. Using a 2 amp charger doesn't decrease the time, as the device will charge at a maximum of about 1100-1200 mAh.
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Curious, do you know this from experience, or is there a technical document you could share?

Obveron said:
Curious, do you know this from experience, or is there a technical document you could share?
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Click to collapse
Android Tuner battery history.

Can anyone tell me what the power draw should be using the stock charger and cable?
Battery monitor is telling me that it is +237ma, it is taking 12 hours to charge. I have sent back to Asus via PC world (what possessed me to buy from there I dont know) and they have told me there is nothing wrong with the device. I have flashed the stock image and still getting notoriously slow charge times.

ricey1986 said:
Can anyone tell me what the power draw should be using the stock charger and cable?
Battery monitor is telling me that it is +237ma, it is taking 12 hours to charge. I have sent back to Asus via PC world (what possessed me to buy from there I dont know) and they have told me there is nothing wrong with the device. I have flashed the stock image and still getting notoriously slow charge times.
Click to expand...
Click to collapse
About 1300 mAh.

ricey1986 said:
Can anyone tell me what the power draw should be using the stock charger and cable?
Battery monitor is telling me that it is +237ma, it is taking 12 hours to charge.
Click to expand...
Click to collapse
With the stock charger and cable, the battery should be charging with close to 1200mA; the charger draws 7.4W from the outlet (at 230V).
There is current limiting based on the voltage the tablet sees, a USB cable with thin wires can drastically limit the charge current.

Slow Charging

When I plug in my power adapter to charge the tablet more often now I get the Slow Charging notification that says battery is charging slowly due to low electric current of TA/USB connection. Any one else seeing this? I am using the stock charger supplied with the tablet. I have tried this on several AC outlets in several different locations. It does not seen to affect the ability to charge the tablet it just charges it a little slower.

MarkLI88 said:
When I plug in my power adapter to charge the tablet more often now I get the Slow Charging notification that says battery is charging slowly due to low electric current of TA/USB connection. Any one else seeing this? I am using the stock charger supplied with the tablet. I have tried this on several AC outlets in several different locations. It does not seen to affect the ability to charge the tablet it just charges it a little slower.
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Click to collapse
i havent experienced this message except for when i connect the tablet to the pc where the electric current is indeed low

katsika said:
i havent experienced this message except for when i connect the tablet to the pc where the electric current is indeed low
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Click to collapse
Thanks for the reply. I am starting to think my power adapter is not putting out the correct current it should be. I will try using a different 2A charger and see how it goes.

MarkLI88 said:
Thanks for the reply. I am starting to think my power adapter is not putting out the correct current it should be. I will try using a different 2A charger and see how it goes.
Click to expand...
Click to collapse
You might also try a different cord!

You may try to install "battery monitor widget", it will tell you charging in USB mode or AC mode.
I also find the stock LG charger slow charging, the widget shows I'm only charging at around 1100mA max. While the charger itself label said Output 1.8A max. I can't reach this level yet.
If I charge with a stock nexus 7 charger (which is 2A rated), it'll get worse...just reach around 800mA max.
I'm still not sure what's wrong with the charger or the tablet itself...

I can say that the cable that came with the gpad does charge faster than a thinner cable I had. Both were tested plugged into the stock LG charger.
Sent from my LG-V500 using XDA Premium HD app

When I pulled my g pad out of the box and saw the stock charger was below 2A I put it back in the box. I charge my tablet with the 2A charger that my note 2 uses.

I've seen this problem intermittently with the stock LG charger and today it seems to have become a permanent fault. Swapping to my Note 3 charger things are back to normal once more. Swapping back and forth repeatedly the LG charger triggers the warning and the Note charger is fine. It looks like the LG charger is a bit rubbish. I'll press for a warranty replacement.

I have noticed mine recharges really slowly as well. Using the stock charger, and the battery app previously mentioned, it gives me about 1.1A from the stock charger. Using my Vita charger rated at 1.5A I get about 1.4 into the G Pad. It seems their charger just stinks.
I sent them a support query to see if they will replace it without hassle, if they want me to send it back I'll just buy something else instead.
Edit: Heard back from LG, they want me to send the whole thing back to them or return it to Newegg. Not sure why they won't just ship me a replacement charger, it would be much cheaper for them in the long run.

tdodd said:
I've seen this problem intermittently with the stock LG charger and today it seems to have become a permanent fault. Swapping to my Note 3 charger things are back to normal once more. Swapping back and forth repeatedly the LG charger triggers the warning and the Note charger is fine. It looks like the LG charger is a bit rubbish. I'll press for a warranty replacement.
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Click to collapse
Further investigation revealed the original cable to be at fault, as it would not make a data connection with either of my laptops. Another cable from my old Galaxy Note worked perfectly. Even so there is still a question mark about the charger as well. Today I spoke to an LG support rep who promised to send a new charger and cable. They should arrive within five working days. I had read of mixed opinions on LG's support, but so far it all seems encouraging.

Slow charging on PC

Not sure if this has happen after the 8.1 update, but on my pixel XL I'm not longer able to get fast charging via usb type c to type c cable. I tried another cable that is known good and still doesn't work.
Factory usb type c cable works from wall outlet to phone. The phone will fast charge. Phone will not fast charge when connecting to pc (usb type c to type c. no adapters)
I tried to factory reset just now. Never unlocked the bootloader on this phone never installed any custom rom.
Safemode still does slow charging
Factory reset still does slow charging
Used SkipSoft Unified Android Toolkit to install drivers - still slow charging
Tried to change device from "charge only" to "transfer files" - slow charging
Any ideas?
Thanks.

that's normal. fast charging doesn't work with a PC, their USB ports charge at a lower rate...

nine7nine said:
that's normal. fast charging doesn't work with a PC, their USB ports charge at a lower rate...
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Click to collapse
It did however did work at some given point. I was able to do fast charging on my pc. motherboard is a x370 SLI Plus from msi.
Edit : never mind you are correct. I was wrong. Thanks for the heads up.

ytv said:
It did however did work at some given point. I was able to do fast charging on my pc. motherboard is a x370 SLI Plus from msi.
Edit : never mind you are correct. I was wrong. Thanks for the heads up.
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Click to collapse
all good. glad u sorted it out...
if you've ever noticed custom kernels that advertise 'USB fast charge' as a feature; those kernels can charge via your PC's USB ports faster.... it still doesn't give you actual fast charging, but it gives it a boost.

Hi guys,
I too experienced this change. My PCs used to charge my Pixel XL quite well, even faster than a wall charger. The phone would say "Charging Rapidly."
Looks like ever since the newest release, my PCs only provide "Charging Slowly."
What's the deal?

gooberphx420 said:
Hi guys,
I too experienced this change. My PCs used to charge my Pixel XL quite well, even faster than a wall charger. The phone would say "Charging Rapidly."
Looks like ever since the newest release, my PCs only provide "Charging Slowly."
What's the deal?
Click to expand...
Click to collapse
I think you are mistaken.... read my posts on the subject. USB ports don't support rapid charging and never have... there is a kernel patch that allows faster charging, but even then, it's still not as fast as a charger.

nine7nine said:
I think you are mistaken.... read my posts on the subject. USB ports don't support rapid charging and never have... there is a kernel patch that allows faster charging, but even then, it's still not as fast as a charger.
Click to expand...
Click to collapse
I am clearly not well-versed in the technological aspects of charging, I'm just telling you what I have seen and experienced with this phone.
- When I plug it into the wall - phone shows "Charging Rapidly....... XX%"
- If I use a crappy charger or regular USB cable - phone shows "Charging slowly....... XX%"
Up until a few weeks ago, my PCs (work and home, same motherboard, same USB-C outlets) would charge it blazingly fast - the same, if not faster than the wall charger.
I even used Ampere app on my phone which showed 1200-1500 mA charing.
Now Ampere shows 310 mA max wtf

gooberphx420 said:
I am clearly not well-versed in the technological aspects of charging, I'm just telling you what I have seen and experienced with this phone.
- When I plug it into the wall - phone shows "Charging Rapidly....... XX%"
- If I use a crappy charger or regular USB cable - phone shows "Charging slowly....... XX%"
Up until a few weeks ago, my PCs (work and home, same motherboard, same USB-C outlets) would charge it blazingly fast - the same, if not faster than the wall charger.
I even used Ampere app on my phone which showed 1200-1500 mA charing.
Now Ampere shows 310 mA max wtf
Click to expand...
Click to collapse
USB 3.x has a Max current of 900mA. that's in the specification... by default, your pixel would still only be using 500mA, but with the kernel patch that I spoke of; it bumps it to 900mA ...
I forget at what capacity, but basically it ramps down charging, after it hits a certain capacity, which might explain the 310mA in Ampere...
i don't know how you possibly could've been getting 1500mA out of a USB 3.x port from your PC, that exceeds the spec by a very large margin... not saying it didn't happen, but AFAIK that shouldn't even be possible.

Question Poco f3 fast charge works then stops

Hi guys
I recently bought a poco f3 256g 8g ram, it's a great phone but one thing I have noticed is that when you try to fast charge it, it works then stops with the charging icon saying its charging even when you pull the charging cable out. I checked it with accu battery and it show that its not charging with minus amp age going in. You then turn the phone off and the charging icon resets. It charges fine when you don't use a fast charger and use a non fast charge brick. I don't have the original f3 charger but have tried my mate 20 Pro fast charge brick as well as my old s8 plus charger and new cables it only charges on a non fast charger. Any ideas anyone?

make sure the fast charger is 33W

Hi thanks for the reply are these phones really that sensitive to the the wattage, the charger I had is a 40w Huawei fast charger and the other a Samsung 18w both start to charge then stop and you cannot charge it with any charger until you turn the phone off. I have tried to get a official poco 33w charger but they are not easy to find.

i have used my 33W charger and another charger 18W fast charger and everything looks fine. if your phone is still under warranty, go to your nearest mi service center.

Hi I got it secondhand so I can't I'm afraid I'm sort of wondering if its a protocol thing as it charges fine with a non fast charger I might flash it in time and see if its a software issue, I can live without the fast charge but it would be nice to have the capability.

fishboy25 said:
Hi thanks for the reply are these phones really that sensitive to the the wattage, the charger I had is a 40w Huawei fast charger and the other a Samsung 18w both start to charge then stop and you cannot charge it with any charger until you turn the phone off. I have tried to get a official poco 33w charger but they are not easy to find.
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Click to collapse
They are ... You need to look at what's written on the charger , not the big W numbers.
Original charger supplies 33W by using 11V and 3Amps.
Written like this on the charger : 11V=3A 33W
Nothing else will work , I for example use 6A cable and it does not charge well - the amps are enough as you can see but the cable most likely can't handle 11V...
Open google , search for authorised xiaomi repair center and buy charging brick/cable from them. Sometimes they too just pick random charger so you'll have to check when you receive it that both the cable is rated at 3A and the brick supplies 33W like written above

Rstment ^m^ said:
They are ... You need to look at what's written on the charger , not the big W numbers.
Original charger supplies 33W by using 11V and 3Amps.
Written like this on the charger : 11V=3A 33W
Nothing else will work , I for example use 6A cable and it does not charge well - the amps are enough as you can see but the cable most likely can't handle 11V...
Open google , search for authorised xiaomi repair center and buy charging brick/cable from them. Sometimes they too just pick random charger so you'll have to check when you receive it that both the cable is rated at 3A and the brick supplies 33W like written above
Click to expand...
Click to collapse
Hi thank you for the reply I will endeavour to try and find a legit charger and cable many thanks again.

fishboy25 said:
Hi thank you for the reply I will endeavour to try and find a legit charger and cable many thanks again.
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Click to collapse
Yw. My reply above mainly covers how to get 33W charging , but I have no idea why it's refusing to charge?
Oddly enough I have the same exact issue happen like bi monthly... Pretty rare but usually happens when phone is REALLY hot ( mine is modified to allow higher temp ) + the charging port is fked and I'm using non compatible cable lol.
Is possible that every once in a while it all lines up so that the phone doesn't recognize charging brick due to bad port situation + it being rly hot sends it into some sort of charging lockdown?
Either way mine is very rare.
I suggest you first get the cable/brick those are like 20/30$ + I bet any repair store would ship it to you. Then if it still doesn't work you can start troubleshooting software/port/motherboard see where the issue is...

Rstment ^m^ said:
Yw. My reply above mainly covers how to get 33W charging , but I have no idea why it's refusing to charge?
Oddly enough I have the same exact issue happen like bi monthly... Pretty rare but usually happens when phone is REALLY hot ( mine is modified to allow higher temp ) + the charging port is fked and I'm using non compatible cable lol.
Is possible that every once in a while it all lines up so that the phone doesn't recognize charging brick due to bad port situation + it being rly hot sends it into some sort of charging lockdown?
Either way mine is very rare.
I suggest you first get the cable/brick those are like 20/30$ + I bet any repair store would ship it to you. Then if it still doesn't work you can start troubleshooting software/port/motherboard see where the issue is...
Click to expand...
Click to collapse
Hi thanks for the reply I have found a poco charger on ebay and a lead not too sure about the lead but I think its suitable. I'm not sure what's going on with it but I will let you guys know if it works. I did read somewhere that someone had a similar issue and that they disconnected the battery and after that didn't have a problem, I think I will try the charger first.

Hi guys got the charger connected it up works then goes into minus amps and stops charging until you turn it off again. So I'm wondering if its worth flashing it? Really frustrating

fishboy25 said:
Hi guys
I recently bought a poco f3 256g 8g ram, it's a great phone but one thing I have noticed is that when you try to fast charge it, it works then stops with the charging icon saying its charging even when you pull the charging cable out. I checked it with accu battery and it show that its not charging with minus amp age going in. You then turn the phone off and the charging icon resets. It charges fine when you don't use a fast charger and use a non fast charge brick. I don't have the original f3 charger but have tried my mate 20 Pro fast charge brick as well as my old s8 plus charger and new cables it only charges on a non fast charger. Any ideas anyone?
Click to expand...
Click to collapse
our phone is still under warranty, go to your nearest mi service center.
Nox Vidmate VLC​

Hi guys just a quick update I connected it up the other day and watched the ampage and voltage go into minus again frustrated I just left it and came back 10 minute later and it charged. It turns out with the original charger it goes into minus amps and voltage but if you leave it it charges and ampage goes up with the voltage.if you disconnect the charger while its in minus amps and voltage it says its still on charge and you have to reset or turn the phone off before you can attempt to charge it again. But if just connected with the original charger without disconnecting it while in minus volt and amps it will charge and the volts and ampage starts charging. I have come to the conclusion its a glitch or bug in the charging protocol for the fast charging or software..