Fast Charge problem - Redmi Note 8 Pro Questions & Answers

hi all guys
my phone switch from fast charge to normal charge during charge .
2flash swith to 1flash after some time ... and by reconnect cable back to 2 flash and fast charge ...
what may be problem ?

Maybe dust on cable or phone, try to clean it very gently with tooth paste
Sent from my Redmi Note 8 Pro using Tapatalk

Uhmm.. I believe there's limit to actual fast charge, I don't remember the exact number, but it slows down (maybe on 90%?) before the battery is full to prevent overcharging and overheating. So that's why the flash sign went from 2 to 1.

Related

charging issue

hi, i hav been facing charging prob, my does not charge whn its remain on rather drains batt more quick but it was charging whn i turn it off but slow. i thought its the issue of sense 5 so i degrade to sense 4+ viper 3.8 but it got worse. idrained my batt and than put to wall charge for whole night but the charging led kept blinking and than it disappeared than again i unpluged and plug the cable to phn than it starts blinking and than again blinking of led disappeared. i thought it will take time to become stable so i left it charge for whole night. in the morning led was disappeared and i tried to turning phn on but it did not respond. than i plug it to pc and it started blinking without disappearing of led. i left it for the whole day to charge but the led didnt turned to green due curiosity i turned phn on and batt lvl showed 20% ......so plzz any 1 tell me wht can be the solution of the problem plzzzzzzzz:crying::crying::crying:
You probably have a dead battery...Someone who has seen this problem before could confirm.
The way you write is pretty hard to read, so you might wait a while until someone does confirm this .
1. Never charge the phone for the whole night.
2. I had the same problem. I changed my charger and now, it is perfectly charging. Try it.
Anish Shah said:
1. Never charge the phone for the whole night.
2. I had the same problem. I changed my charger and now, it is perfectly charging. Try it.
Click to expand...
Click to collapse
thanx for suggestion, how much do i hav to pay for a new charger??
But you said you left it to charge via USB cable on your PC and it didn't charge properly. If you used the same USB cable with the charger, then the cable might be to blame. You should try a friends cable before buying a new charger.
If the charger does not work with the same USB cable you used to connect to the PC, your battery is most probably dead.
Anish Shah said:
1. Never charge the phone for the whole night.
2. I had the same problem. I changed my charger and now, it is perfectly charging. Try it.
Click to expand...
Click to collapse
Charging all night isn't an issue.
The battery will charge to 100% then drop to 95% and back up, will cause no damage.
Also smaller and often charges are better for the battery as it slows the formation of crystals so the battery holds its capacity longer.
Sent from my HTC One X using xda app-developers app
unikulkiss said:
But you said you left it to charge via USB cable on your PC and it didn't charge properly. If you used the same USB cable with the charger, then the cable might be to blame. You should try a friends cable before buying a new charger.
If the charger does not work with the same USB cable you used to connect to the PC, your battery is most probably dead.
Click to expand...
Click to collapse
using different cable phn is getting charge but the charging speed is very slow, in 6 hrs it has charged only 64% and dont know wht to blame batt or charger???
solidsnakecod4 said:
using different cable phn is getting charge but the charging speed is very slow, in 6 hrs it has charged only 64% and dont know wht to blame batt or charger???
Click to expand...
Click to collapse
If you have used 2 different cables to charge and none worked properly, that is probably too big of a coincidence. Your phone has something broken; it's either the battery or the charging circuit in the phone. You should take it to a specialized phone service to see what's wrong. They will also try charging it before disassembling, and if there's nothing wrong with the phone, they probably won't even charge you anything.
If indeed they have to disassemble it, you should ask them if there will be any visible differences once they assemble is back. I had a cracked digitizer on my old One X and took it to service and replaced the display+digitizer(they come together) and, although the screen was new, it did not fit as snugly as before, so you could see light leaking out the side margins of the display.
They probably had many of these phones under repair and should know if this will be the case with your phone.
unikulkiss said:
If you have used 2 different cables to charge and none worked properly, that is probably too big of a coincidence. Your phone has something broken; it's either the battery or the charging circuit in the phone. You should take it to a specialized phone service to see what's wrong. They will also try charging it before disassembling, and if there's nothing wrong with the phone, they probably won't even charge you anything.
If indeed they have to disassemble it, you should ask them if there will be any visible differences once they assemble is back. I had a cracked digitizer on my old One X and took it to service and replaced the display+digitizer(they come together) and, although the screen was new, it did not fit as snugly as before, so you could see light leaking out the side margins of the display.
They probably had many of these phones under repair and should know if this will be the case with your phone.
Click to expand...
Click to collapse
thnx bro, my phn is fully charged now but ill be visiting service center..
You can use/try every USB charger and cable you have in your house, I also charge my HOX with my iPad charger (only different cable ) no porblem at all. And it's no problem to charge your phone the whole night.

My Note 2 doesn't charge all

When I charge my mobile phone in the nights, it doesn't charge all. Sometimes it charges until 70 or 43...(random numbers) and it stops charging although led is red and it says that's it's doing.
I cleaned the USB port with a pin and with contact cleaner and it didn't disappear. Thank you.
Some idea?
Sorry my english hehe
check charger cable , some arent good , it may drain battery not chargin it
Get the galaxy charging current app and it will tell you how much charge is going into your phone. It opened my eyes to why my phone was taking no charge.
https://play.google.com/store/apps/details?id=com.abmantis.galaxychargingcurrent.free
Sent from my GT-N7105 using Tapatalk
I installed that app and where it puts Now it always says 1698 but Maximum is from 100 to 1700, different values when I refresh.
That's bad?
Yea, that's weird. Try charging from USB cable connected to your PC or try with another charger.

[Bricked] Flat battery, Won't charge, No recovery, No root

Hello all,
I'm at my wits end to put it lightly... I have the P-605, I was trying to flash ng1 official firmware through Odin v3.09, which the file in question, I have used a few times before so it isn't a bad download.
It got about half way through and died. The tablet still boots to the 'firmware upgrade has encountered an issue screen', I can still enter download mode. One major issue I can't charge it and i have no recovery [emoji22] its now dead flat.
Even with my 2.1Amp tablet charger it boots for a few seconds and dies. I've tried multiple cables and USB wall chargers as I thought that may be the issue all to no avail! I am completely lost. Any help would be muchly appreciated
What was the firmware before you flahed the stock ng1? cm11?
Have you try to flash recovery with Odin, don't let it boot up and see if you can boot into recovery.
Did you try to flash with low battery juice??
The prior firmware version is unknown :-/ but it was X KAT v3. I did try to flash recovery but it resets before it gets it done, if I hold the PWR, VOL+, HOME the screen seems to light up stay black a little longer than if it was going to the firmware issues screen then go to 'firmware upgrade has encountered issues' screen. It seems the longer I keep it off charge the longer it takes for it to reset next time its plugged in, so I will leave it for a hour and try to flash recovery. I didn't know what the battery was at 'probably very low' as I haven't used it in yonks and it was already in a bootloop from flashing X Kat v4.0 incorectly otherwise I would have charged it
I'm thinking about taking the battery out and manually charging it with a old USB cable. From pictures on the internet the battery has 2 red 'positive' 2 black 'negative' and 2 green. I'm unsure of what the green cables are. Is there anyone that can shed some light on this?
blakie21737 said:
I'm thinking about taking the battery out and manually charging it with a old USB cable. From pictures on the internet the battery has 2 red 'positive' 2 black 'negative' and 2 green. I'm unsure of what the green cables are. Is there anyone that can shed some light on this?
Click to expand...
Click to collapse
Hi,
have a look here for the USB pinout !
The original cable uses only four of the micro usb pins. The second ground pin is missing. This can be used to put the device into certain modes. I used different cables, all with five pins, no problems, but it does not mean, that the fifth pin was wired in these cables. Batteries have an internal security circuit which cuts power vis a polyfuse, if the voltage drops too low. The fuse should be re-armed when connecting the device to the charger, although the device may not recognize its own battery. Let it charge for a while, that the fuse doesn't blow again when disconnecting. Plug in again to charge fully. Some devices have a design fault which makes them unable to recover with a discharged battery. Charging Voltage is not 5, but 3.7v! The additional cables at the bsttery are either for a dumb temp probe, or a bus to communicate with the security circuit. The latter maybe impossible to charge externally. Otherwise you probably need some professional charging station, which can handle all sorts of Nimh and LiOn batteries AND have to make an adapter for the custom battery plug. Too much hassle, right?
blakie21737 said:
I'm thinking about taking the battery out and manually charging it with a old USB cable. From pictures on the internet the battery has 2 red 'positive' 2 black 'negative' and 2 green. I'm unsure of what the green cables are. Is there anyone that can shed some light on this?
Click to expand...
Click to collapse
Get one of this usb filter charging adaptor and use your pc to charge it. This also allow you to charge your tablet using any power source like PC, car charger etc... you will not see the X mark when using your pc to charge.
http://www.amazon.com/gp/product/B007IXBTCK/ref=oh_details_o02_s00_i00
This adaptor adds Apple signaling for charging currents above 0,5A. If the current charger won't support Apple stuff.
And yes, I suspect that the Note expects the Apple signal for 2A iPad charging.
I don't know whether there are any supported charge modes in between, like 900mA, but it charges from a standard 500mA usb port, but only in soft-off and idle deep sleep, and ultimatively slow.
But then, since the KK update, some people's Notes charge only during active state.
HELP
blakie21737 said:
Hello all,
I'm at my wits end to put it lightly... I have the P-605, I was trying to flash ng1 official firmware through Odin v3.09, which the file in question, I have used a few times before so it isn't a bad download.
It got about half way through and died. The tablet still boots to the 'firmware upgrade has encountered an issue screen', I can still enter download mode. One major issue I can't charge it and i have no recovery [emoji22] its now dead flat.
Even with my 2.1Amp tablet charger it boots for a few seconds and dies. I've tried multiple cables and USB wall chargers as I thought that may be the issue all to no avail! I am completely lost. Any help would be muchly appreciated
Click to expand...
Click to collapse
I have the same issue.........!!!
I'm lost at this point and dont know what to do.
Any attempts at flashing appear to be useless as there is now zero battery and it wont charge.
It boots straight to 'Firmware encountered a problem screen'. I can get it to the download screen.
It also made it 47% of the way through a recovery via kies, but i think the battery issue caused the failure.
If the cable is pulled out while in the firmware encountered a problem screen it instantly dies and wont start. It wont start unless the plug is in........
Anyone??? Please???
With zero battery, you can't perform any maintenance requiring a usb connection.
Without OS and/or custom recovery, i don't know any advice.
ADB and probably Fastboot operations can be performed via wifi, while the thing is at the charger, but in brick state this won't help.
lecorbusier said:
With zero battery, you can't perform any maintenance requiring a usb connection.
Without OS and/or custom recovery, i don't know any advice.
ADB and probably Fastboot operations can be performed via wifi, while the thing is at the charger, but in brick state this won't help.
Click to expand...
Click to collapse
Thank You
Advice to is find a way to Charge the battery then attempt other methods.
I think Kies may work if I have Charge
Cheers
Tim
Maybe the Note froze and drained the battery till it's safety circuit kicked in.
Then you should leave the Note charging for a while(hopefully), to reset the circuit's fuse and get enough juice to not trigger it again immediately. Normally, after unplugging and replugging, the battery should get recognized again and charge normally till full. Monitoring charge in Off-State requires(only) a working kernel, i think.
It also could be a defunct usb jack or just the connection with the main pcb is loose, which is typical for the Note, like loose display and backlight cables.
lecorbusier said:
Maybe the Note froze and drained the battery till it's safety circuit kicked in.
Then you should leave the Note charging for a while(hopefully), to reset the circuit's fuse and get enough juice to not trigger it again immediately. Normally, after unplugging and replugging, the battery should get recognized again and charge normally till full. Monitoring charge in Off-State requires(only) a working kernel, i think.
It also could be a defunct usb jack or just the connection with the main pcb is loose, which is typical for the Note, like loose display and backlight cables.
Click to expand...
Click to collapse
Thanks Lecorbruiser.
I have had the unit aprt a few times to verify battery connections and all ribbon connections on the boards are ok.
Im note sure of the safety circuitry uou mention though.
I have also power the device up with out the battery plugged in at all. So i know the supply is there. Maybe i have run the battery too low to recover?
Sent from my SM-G900I using Tapatalk
The safety circuit is in the battery or attached to it. Once its fuse has been triggered(normally at 2,5v), the battery shows zero voltage & open circuit. Current from a charger should reset the fuse and the battery will charge unless it had been discharged below 1,5v.
Normally devices with 3,7v batteries are shut down by the system at 3,5-3,0 volts, mostly 3,5 like the Note.
Well the device started to flicker and couldn't keep the screen back light on when it go low.... I'd say I have trashed the battery then if it got below 1.5?!
I have left it on charge for over 10 hours a couple of times and achieved nothing
Android shuts down at 3,5v, in case of a freeze(which could go unnoticed if it happens in standby) the circuit at 2,5v. Then it's a matter of self discharge, till the battery reaches the critical point of 1,5v.
The flickering backlight denotes one of the other cables running across the battery, like that for usb.
I think the connections loose by holding the note in your hands, pressing on the backside. A case with a stiff back will stabilize the Note, like mine. Otherwise all pressure goes thru the flimsy back and is applied on the battery, the metallic shields or some spacers. And the cables get bent very slightly during pressure. Should be harmless, but seemingly isn't.
I have done some testing... here it goes:
Battery Voltage disconnected 2.69V
Battery Connected and USB connected 2.8V
Battery not connected or ( after accidently) shorted 1.5V
From my reading android min voltage is about 3v?
Normal voltage from 3.7v to 3.2V and Charging voltage at a max of 4.4V
I also see some talk of 2.7V figure as a minimum cutoff point, this maybe why it will not give 4.4V to charge as below 2.7v maybe considered a write off?
Thanks for your info lecorbusier
With some custom roms, but none i know for the Note, you can modify the shutdown voltage, to squeeze out a couple of minutes battery life, though the voltage goes down rapidly after having reached 3,5v.
lecorbusier said:
With some custom roms, but none i know for the Note, you can modify the shutdown voltage, to squeeze out a couple of minutes battery life, though the voltage goes down rapidly after having reached 3,5v.
Click to expand...
Click to collapse
Thanks for all your help.
I purchased a new battery and did a normal kies recovery and it's back from the dead... Thanks again
Sent from my Pixel XL using Tapatalk

RedMi 1S won't Turn on after Battery drain

Hi
I have a RedMi 1S running V45 (Indian Version). I am using this mobile since last 1 month. I am facing a strage issue with the phone.
Whenever the battery drains completely and the phone get switched off, it is taking forever to switch on the phone even after charging. I atleast need to charge it for 1 or 2 hours to see something on the screen. Its like the phone is completely dead.
I tried taking of the battery and inserted it and then charged. At this stage only thing I notice is the status LED glows in RED for a couple of seconds and like dead. After one or 2 hours, I see that LED starts blinking in RED. After this I need to wait for another 30 min or 1 hour to be able to switch on the phone. It is like the phone is taking almost 2 hours to get the initial charge to switch on the phone.
Is anyone facing same kind of issue?
Thanks
No mine is fine..
It only takes about 10-15s normally to gain initial charge to boot up !
Maybe some issue with charging?
No such issue faced yet. Once mine got fully discharged , but started in few seconds of charging.
Issue with the Charger
Hi
Looks like issue/compatibility with the Charger. I was using Samsung 2.5A charger which I bought for old mobile. Today, I tested with the original MI charger and the phone immediately showing the charging status. The MI original charger is 2A one. But still I think it has some compatibility issue with other chargers.
Thanks for your replies.
Dont!!!
@mail2eswar Please Dont use any other charger except xiaomi charger!! Its Snapdragon 400 8228 and it actually supports Qualcomm Quick charge 2.0 but its not working (donno bcaz of kernel or its locked) So if u use any other charger u'll end up in SoC failures :silly: and leads Motherboard replacement!!!! :cyclops:
Pavan l said:
@mail2eswar Please Dont use any other charger except xiaomi charger!! Its Snapdragon 400 8228 and it actually supports Qualcomm Quick charge 2.0 but its not working (donno bcaz of kernel or its locked) So if u use any other charger u'll end up in SoC failures :silly: and leads Motherboard replacement!!!! :cyclops:
Click to expand...
Click to collapse
Thank you. I just started using the Original Mi charger today. I will continue using the same.
i'm newbie ! ( sorry for bad english )
I'm new here. i did everything in this thread and i don't think the battery works for me . how many percent battery drained over 1 hour ?
and universal initd said that my kernel does not support init.d . had anyone encountered this ?
mail2eswar said:
Hi
Looks like issue/compatibility with the Charger. I was using Samsung 2.5A charger which I bought for old mobile. Today, I tested with the original MI charger and the phone immediately showing the charging status. The MI original charger is 2A one. But still I think it has some compatibility issue with other chargers.
Thanks for your replies.
Click to expand...
Click to collapse
Don't ever use another's phone as your Charger. Different V and A are the main cause of your issue.
mail2eswar said:
Hi
I have a RedMi 1S running V45 (Indian Version). I am using this mobile since last 1 month. I am facing a strage issue with the phone.
Whenever the battery drains completely and the phone get switched off, it is taking forever to switch on the phone even after charging. I atleast need to charge it for 1 or 2 hours to see something on the screen. Its like the phone is completely dead.
I tried taking of the battery and inserted it and then charged. At this stage only thing I notice is the status LED glows in RED for a couple of seconds and like dead. After one or 2 hours, I see that LED starts blinking in RED. After this I need to wait for another 30 min or 1 hour to be able to switch on the phone. It is like the phone is taking almost 2 hours to get the initial charge to switch on the phone.
Is anyone facing same kind of issue?
Thanks
Click to expand...
Click to collapse
Did you get any solution for this issue I'm facing the same the same problem. I'm unable to restart my redmi 1s
Eaxct same problem on my Redmi 1S
Exactly the same issue with mu Redmi 1S. Initially everything was fine. Then one day I lost my original Charger (1 Amp) , and I started looking for a replacement charger. I got one 2 Amp Fast charger from a local store and initially everything was fine and the Phone used to charge fine but then it wont hold the charge for too long. So I started using my Redmi Note4 charger which again is a 2 Amp charger.
But as I see is that if my phone is once drained fully, it is not easy to start back. 2 Amp charger connected for 3 hours straight did'nt help, apart from the intermittent flicker of the LED once a while. No battery charging animation on the screen.
Then I took 1.2 Amp Nexus Charger and behold the full screen battery charging animation pops up immediately. I could start my phone while charging.
My inference is that get an original Xiaomi Redmi 1S (1 Amp) charger if you can. Or else suffer like me
i have the same problem . did you fix it
exactly same problem here. Difference is that I'm using Redmi 1s for more than 3 yrs and suddenly out of nowhere these happened ( after battery discharged its not starting and a red led is blinking, even removing battery and connecting to the charger didn't work). Someone mentioned here not to use different charger, probably they r right bcz I used samsung charger while this happened. Went to Mi Authorized Servicing Centre they told Motherboard is damaged and will cost Rs. 4800/-. No way man! my Mi was of 5999/- not gonna fix it with 4800/-. I'll rather go for a new one.
can i solve this problem by changing another os
Yes You are right. Today after complete battery drain, I have connected phone to another charger that time LED on mobile start blinking so I assume that it started charging while it was not. After another one hr I tried to switched on but it was not switching on so I was worried and I started searching solution, Strangly when I connected Orignal Charger , it immediately shows battery symbol which was showing 0% charge. Thanks to this thread which help me to find solution.

[HELP] Phone won't charge.

First it stopped fast charging. I then later it would only charge sometimes and then accidentally dropped it and now it wont charge at all. I don't know what to do. I tried another note 4 charger and it won't charge on that either. I just got the phone last Feb and it broke already? Is there anything to try before I take it somewhere to be fixed?
Phone won't charge on a note 4 fast charger
Tried 2 note 4 fast chargers.
When the phone is off it sits on the screen with the battery and the thunderbolt but never charges or shows a charge %.
Please help. The phone is in a pelican case. It doesn't look damaged from the outside but I don't know about the inside.
Edit: As soon as I posted this I tried again and it charged with fast charger. I don't understand what is going on.
Maybe the charging port is loose...You can try using wireless charging thought that will require a new back cover/ insert and a qi charger
Warranty. Go to AT&T Device Service Center
The battery could be defective as well. Try another battery or take it to ATT and tell them its not charging, they should have an extra battery to test with as well.
When you tried the other chargers, did you use their cable or the power block with your cable. My son had a similar issue with his Note 2 and did what you did but used his cable. Turns out the cable had a short in it. Replaced the cable and it charges fine ever since.
herox said:
first it stopped fast charging. I then later it would only charge sometimes and then accidentally dropped it and now it wont charge at all. I don't know what to do. I tried another note 4 charger and it won't charge on that either. I just got the phone last feb and it broke already? Is there anything to try before i take it somewhere to be fixed?
Phone won't charge on a note 4 fast charger
tried 2 note 4 fast chargers.
When the phone is off it sits on the screen with the battery and the thunderbolt but never charges or shows a charge %.
Please help. The phone is in a pelican case. It doesn't look damaged from the outside but i don't know about the inside.
Hi did you fix it ?
Edit: As soon as i posted this i tried again and it charged with fast charger. I don't understand what is going on.
Click to expand...
Click to collapse
hi did you fix it ?
Yep. Was a bad wire. Not sure why others were not working at the time but eventually one started working and then they all started working again. I have no idea what was the problem.

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