Can you use phone with charging but no battery? - Xiaomi Redmi Note 3 Questions & Answers

Hi, recently my rn3 pro stopped charging today and i'm trying to figure out if it's the charging connections or the battery itself.
Therefore, if i disconnect the battery, should the phone turn on if i plug it to the charger? I mean there is a direct connection between the charging port and the motherboard, then from the motherboard the battery takes current and charges, so i guess the answer is yes, but i want someone who might have dealed with this to confirm or deny this idea. Thanks!!

In case anyone confronting with this, yes you can, so if your phone doesnt turn on without the battery if plugged then it's the charging pcb that you should replace and not the battery necessarily

AgentBuBu said:
In case anyone confronting with this, yes you can, so if your phone doesnt turn on without the battery if plugged then it's the charging pcb that you should replace and not the battery necessarily
Click to expand...
Click to collapse
If I understood correctly the device can be used without a battery if it is plugged in? The original battery still provides decent backup. So if the above is true I won't bother to replace it with original battery which is still available but can go permanently OOS at any time.

amn1987 said:
If I understood correctly the device can be used without a battery if it is plugged in? The original battery still provides decent backup. So if the above is true I won't bother to replace it with original battery which is still available but can go permanently OOS at any time.
Click to expand...
Click to collapse
yep

Related

Charging/Battery

do you need a battery to turn on a wallaby? i have one and dont want to buy both a battery and a charger to see if it even works.
Well it doesnt run on solar power so i am pretty confident that you would need a battery but if the battery is dead you will need a charger to obviously, charge it. A charger costs £5 in the uk so i cant see it costing you much to try
You misunderstood. I have neither a battery or a charger. i want to know if you can power it on with just a charger. or do i need both the battery and charger just to get it ON?
it works without a battery.
cerjam said:
You misunderstood. I have neither a battery or a charger. i want to know if you can power it on with just a charger. or do i need both the battery and charger just to get it ON?
Click to expand...
Click to collapse
The battery in the wallaby is inside the case, so if you have no battery who took it out and why? But as the previous post states you can use the wallaby without a battery.
it came dissassembled, missing the battery and antenna. and it looks like someones done some wiring in it, but the screen isnt broken from what i can tell. so if its tits up, anyone who needs a screen or parts i probably got em.

sgs2 wont boot up, start up

hi, my battery was really low than my phone turned off. i went home to charge but no charging sign. tried to charge it for 1 hour nothing happend. did my phone just died? or can i do somthing to get it back to work?
also i drained it 3 times the past 3 days, could i have broken the battery becouse of this?
try plugging the charger in with the battery out, and fit the battery after and see if it starts to charge? maybe leave it connected overnight or try another battery if possible.
lector007 said:
hi, my battery was really low than my phone turned off. i went home to charge but no charging sign. tried to charge it for 1 hour nothing happend. did my phone just died? or can i do somthing to get it back to work?
Click to expand...
Click to collapse
I'm not an expert, so double check the information I'm giving you, as it might be wrong.
Have you tried to use a USB jig to revive the phone? You can buy one on eBay for €5. Hopefully it will solve the problem.
Otherwise, I don't think that it should be the case, but it is reported that SSD drives can be completely erased when they suffer a subtle power cut. In this case, there is no damage other than the complete wipe of all information on the memory. As far as I'm concern, the phone's memory is quite similar to SSD and other flash memories, therefore it would be a possibility, although it is not likely.
Should it be the case, it's better to seek Samsung Service Centre's help. Running out of battery should never damage the phone, therefore, if you have warranty it should be covered.
also i noticed that after a few hours of trying to charge it the battery feels really colld. could this mean the battery is dead?
lector007 said:
also i noticed that after a few hours of trying to charge it the battery feels really colld. could this mean the battery is dead?
Click to expand...
Click to collapse
Veram said:
Click to expand...
Click to collapse
normally when you charge a battery it heats up a litle. mine stays really cold
Have you tried another charger, or charginging with the usb lead? Soundlike the charger could be duff.
mrm1 said:
Have you tried another charger, or charginging with the usb lead? Soundlike the charger could be duff.
Click to expand...
Click to collapse
tried 3 diffirent chargers. and usb as well. no sign of life
hi any chance did u solve your problem?
i am having the same problem my voltage on the battery drops down to 0 so it does not charge or power on when connected to a charger.
i had to shock the battery with 5v dc till i got the voltage upto 3.2v than put back into phone than on charge but it still drains out completely. any help on how u solved your problem?

[Q] Charging issue

Hello!
I am facing,lets say a issue, when charging my L920 on charger and phone is OFF. I put on charger after 2-3 minutes it starts by it self....
Does it to anyone else also? It is normal? I just want it to remain switched off while charging like this, but its not a big deal ofc.
Thanks
It is the normal behaviour of ur phone, so be cool with it. It is not an isssue.
miodrage said:
It is the normal behaviour of ur phone, so be cool with it. It is not an isssue.
Click to expand...
Click to collapse
But isnt it better for phone to charge up while its off? i mean it deffinately has less power consumtion in off state :] so it can charge better ..i guess
Seeing as the phone has a 2 Ah Battery and the charger is 1A, you can recharge your phone in about 2 hours (That's from 0 to 100 with a 100% efficiency, usualy efficiency is lower but you usualy don't let the phone drain to 0 ). The power it drains during that time will probably not affect the charging time to much, you can probably charge it in 2h 15m if it's turned on. In short: The time you would save by charging the device turned off is insignificant.
Liborzbrna said:
But isnt it better for phone to charge up while its off? i mean it deffinately has less power consumtion in off state :] so it can charge better ..i guess
Click to expand...
Click to collapse
This question came up a lot when the WP7 came out (it's not a Nokia-specific issue at all).
The gist of the reasoning is that the phone's charging isn't a "dumb charger" that dumps a bunch of current into the battery and hopes it charges eventually (ideally without exploding). Instead, the phone has an actual charging circuit that tests the battery capacity & incoming current to determine how charged the battery is, and cuts off the current when it's at 100%.
This is actual "software" that runs on the phone's processor, and thus requires that the phone be on for it to work.
You'll get used to it.
Brad.
bpsmicro said:
This question came up a lot when the WP7 came out (it's not a Nokia-specific issue at all).
The gist of the reasoning is that the phone's charging isn't a "dumb charger" that dumps a bunch of current into the battery and hopes it charges eventually (ideally without exploding). Instead, the phone has an actual charging circuit that tests the battery capacity & incoming current to determine how charged the battery is, and cuts off the current when it's at 100%.
This is actual "software" that runs on the phone's processor, and thus requires that the phone be on for it to work.
You'll get used to it.
Brad.
Click to expand...
Click to collapse
Thats one serious answer, something i hoped for. Thx a lot for explanation.

[Q] Battery Wtf

So i just played with Custom ROMs to find the best for me...
But from one point my Phone f*cked up the battery detecting...
CM9 and CM9 detect the battery at 45% and then he Level instantly just drop to 0%...
I cant even restart my phone, so i guess the battery really went out...
So how can i fix, that the ROM would not detect it 45% but 3-4% ?
And let me fully chage my phone ?
Stock rom Always Detect it 100% and then randonly the phone shut down in random times (cuz it drops the level to 0%)
I've tried the "Fully-Charge, Fully-Discharge" But the ROM still detect the Battery wrong...
Even tried to delete the battery stats...
Any solution, or idea ?
I currently use CM with the built-in CM9 kernel...
I think its battery problem.use a new battery.ur prblm will be solved
Sent from my WT19i using xda premium
RabirX said:
So i just played with Custom ROMs to find the best for me...
But from one point my Phone f*cked up the battery detecting...
CM9 and CM9 detect the battery at 45% and then he Level instantly just drop to 0%...
I cant even restart my phone, so i guess the battery really went out...
So how can i fix, that the ROM would not detect it 45% but 3-4% ?
And let me fully chage my phone ?
Stock rom Always Detect it 100% and then randonly the phone shut down in random times (cuz it drops the level to 0%)
I've tried the "Fully-Charge, Fully-Discharge" But the ROM still detect the Battery wrong...
Even tried to delete the battery stats...
Any solution, or idea ?
I currently use CM with the built-in CM9 kernel...
Click to expand...
Click to collapse
How old is the battery? What charging cable are you using and what is the cable plugged into?
If the battery is more then a year old it could be 'tired' and not holding a charge correctly (trying another known good battery in your phone will determine this, as will trying your battery in another phone, and if it works well you may have more issues to deal with). If you got the phone second hand, you have no way of knowing the battery's history. Repeated overcharging is also not recommended, as well as leaving the battery in very hot places as it can damage the onboard circuitry in the battery.
Cheap aftermarket (non OEM) USB cables are not that great imo, they are generally not as well made and soon get loose connections, resulting in poor connectivity (charging with a bad cable can also damage the battery). Always use the original cable or a good quality aftermarket one, like Belkin.
Charging the phone from a USB port on a PC or laptop (and/or via a USB hub) is not as efficient as charging it directly from a wall mains USB adapter, because the power often gets interrupted. Ideally for the best charge you should turn the phone off and use a wall/mains socket USB lead, so as give a direct, constant, power supply to charge a battery. A typical full charge is done in two hours. If you charge this way and the battery still has issues buy a new one.
smirnofred said:
How old is the battery? What charging cable are you using and what is the cable plugged into?
If the battery is more then a year old it could be 'tired' and not holding a charge correctly (trying another known good battery in your phone will determine this, as will trying your battery in another phone, and if it works well you may have more issues to deal with). If you got the phone second hand, you have no way of knowing the battery's history. Repeated overcharging is also not recommended, as well as leaving the battery in very hot places as it can damage the onboard circuitry in the battery.
Cheap aftermarket (non OEM) USB cables are not that great imo, they are generally not as well made and soon get loose connections, resulting in poor connectivity (charging with a bad cable can also damage the battery). Always use the original cable or a good quality aftermarket one, like Belkin.
Charging the phone from a USB port on a PC or laptop (and/or via a USB hub) is not as efficient as charging it directly from a wall mains USB adapter, because the power often gets interrupted. Ideally for the best charge you should turn the phone off and use a wall/mains socket USB lead, so as give a direct, constant, power supply to charge a battery. A typical full charge is done in two hours. If you charge this way and the battery still has issues buy a new one.
Click to expand...
Click to collapse
First of all, the Phone is manufactured in 11W41 (2011 Week #41) and the battery in 11W39 (2011 Week #39)
I use a tipical Micro USB charger which does not connect to the wall with USB but the cable directly integrated into the adapter...
And the phone's shipped official cable to charge throught my PC...
The battery worked fine before i forgot to delete battery stats and flashed a ROM...
After that, all ROM is getting fake battery data...
After using my phone i noticed:
-When the phone displays 70-80% charge, the battery actually have 10-15%
-When the battery reach 0% the phone not just jumps to 0% but the Phone shut down within a half second (as no more energy)
-When i charge it to 3-4% the phone show 80% again...
-So i can charge it to about 10 or max 15% when the OS detect 100% and does not charge it further more, which prevent me from properly re-calibrate the battery stats, cuz 10-15 will be always the max charge of the battery...
Now i'm looking for some kind of Mod / App that fake the Battery level to the OS (for example lock it to 5% and the OS continue to charge the battery) i know its dangerious cuz if i'm not aware i'll overcharge it and it will die permanently, but i have no better idea ATM...
Update: Sometimes after my phone dies from no remaining electron in the battery It displays 5% charge when i switch it on while connected to a charger (the only way i can switch it on) And starts to increase.. (5-6-7-8 etc..)
But sometimes it instantly jumps up to 70-80% if i think right when the screen switches of..
So i enabled "No-screen-off-whili-on-charger" and letit charging..
Will notice you about the result...
RabirX said:
First of all, the Phone is manufactured in 11W41 (2011 Week #41) and the battery in 11W39 (2011 Week #39)
I use a tipical Micro USB charger which does not connect to the wall with USB but the cable directly integrated into the adapter...
And the phone's shipped official cable to charge throught my PC...
The battery worked fine before i forgot to delete battery stats and flashed a ROM...
After that, all ROM is getting fake battery data...
After using my phone i noticed:
-When the phone displays 70-80% charge, the battery actually have 10-15%
-When the battery reach 0% the phone not just jumps to 0% but the Phone shut down within a half second (as no more energy)
-When i charge it to 3-4% the phone show 80% again...
-So i can charge it to about 10 or max 15% when the OS detect 100% and does not charge it further more, which prevent me from properly re-calibrate the battery stats, cuz 10-15 will be always the max charge of the battery...
Now i'm looking for some kind of Mod / App that fake the Battery level to the OS (for example lock it to 5% and the OS continue to charge the battery) i know its dangerious cuz if i'm not aware i'll overcharge it and it will die permanently, but i have no better idea ATM...
Update: Sometimes after my phone dies from no remaining electron in the battery It displays 5% charge when i switch it on while connected to a charger (the only way i can switch it on) And starts to increase.. (5-6-7-8 etc..)
But sometimes it instantly jumps up to 70-80% if i think right when the screen switches of..
So i enabled "No-screen-off-whili-on-charger" and letit charging..
Will notice you about the result...
Click to expand...
Click to collapse
try reflash stock.ics ftf should fix this
Already tried, the Stock rom always showed 100% charge, and when the battery ran out, just powered off...
(Jumped from 100 to 0 instantly)
As i mentioned, in the reply you quoted, today it started charging from 0...
It went good, but somewhy, it just stopped at 26% and not a single volt went into the Battery...
As i Pulled out the Cable, the indicator jumped to 100 instantly...
Can you link several stock ROMs ?
I've tried with the 4.0.4 Android
but maybe the 2.3 can still work with it...
RabirX said:
Already tried, the Stock rom always showed 100% charge, and when the battery ran out, just powered off...
(Jumped from 100 to 0 instantly)
As i mentioned, in the reply you quoted, today it started charging from 0...
It went good, but somewhy, it just stopped at 26% and not a single volt went into the Battery...
As i Pulled out the Cable, the indicator jumped to 100 instantly...
Can you link several stock ROMs ?
I've tried with the 4.0.4 Android
but maybe the 2.3 can still work with it...
Click to expand...
Click to collapse
but i think theres some HW damage. even if not rhe battery maybe some config chip is broken or whatever on the board. normally flashing a stock.ics.ftf resloves all software issues, as its resets all stuff to factory..
anyway, here u can find links to other android versions: http://talk.sonymobile.com/t5/Andro...y-Bean-ICS-Ice-Cream-Sandwich-and/td-p/154389
bejunk said:
but i think theres some HW damage. even if not rhe battery maybe some config chip is broken or whatever on the board. normally flashing a stock.ics.ftf resloves all software issues, as its resets all stuff to factory..
anyway, here u can find links to other android versions:
Click to expand...
Click to collapse
One solution still, that my frind has the same phone as me, so when i meet him, he can charge my battery to really full and maybe when i insert it to my phone it might work...

Question Charging issue

Hey Guys,
Anyone else experience slow to almost non existent charging speed if the phone has been on for a few hours?
The only way it goes back to charging fast is if I restart the phone while its plugged into a charger.
I have tried using the stock charger and aftermarket ones and different cables as well. Makes no difference until restart.
Chime in if anyone has any idea whats happening and/or how to fix it.
PS: I am unlocked and rooted if that matters.
Is the screen off? Having the screen on during charging will skew the charge cycle.
Does it charge normally when shutdown?
Possible battery, charging port, or mobo failure.
Check phone for any signs of battery swelling.
Same issue here. Got the phone today, charges sloooow by USC-C as well as QI... Although it shows "fast charging" in settings. I will check, if it's better after a reboot.
blackhawk said:
Is the screen off? Having the screen on during charging will skew the charge cycle.
Does it charge normally when shutdown?
Possible battery, charging port, or mobo failure.
Check phone for any signs of battery swelling.
Click to expand...
Click to collapse
Doesnt matter if the screen is on or off, I even left overnight and gained like 8% charge.
Battery seems to hold a charge fine, there is no swelling and discharge behavior is normal. Used to charge normally a few days ago.
morphius88 said:
Doesnt matter if the screen is on or off, I even left overnight and gained like 8% charge.
Battery seems to hold a charge fine, there is no swelling and discharge behavior is normal. Used to charge normally a few days ago.
Click to expand...
Click to collapse
SOT has it diminished significantly?
Charging at a start temperature above 72°F?
If so it sounds like a charge port or mobo failure... sorry.
Try clearing the system cache and a hard reboot.
Try toggling fast charging on/off 3 times.
blackhawk said:
SOT has it diminished significantly?
Charging at a start temperature above 72°F?
If so it sounds like a charge port or mobo failure... sorry.
Try clearing the system cache and a hard reboot.
Try toggling fast charging on/off 3 times.
Click to expand...
Click to collapse
Ill have to check the temp next time I am at room temp. I was playing some COD so I was over 80F when I started charging just now. Did not have to restart so maybe its good.
morphius88 said:
Ill have to check the temp next time I am at room temp. I was playing some COD so I was over 80F when I started charging just now. Did not have to restart so maybe its good.
Click to expand...
Click to collapse
Make sure the port is clean and free of debris.
Inspect and carefully clean* if needed with a toothbrush and a small amount of anhydrous isopropyl alcohol.
Lol, RO water if needed than the alcohol.
Allow to dry completely.
*I live in a dusty environment and even after 2 years never had to clean my C port. However my bdu cargo pants pockets are lint free, not all pants pockets are. In general these ports seem to stay clean but you know how that goes...
Same here. Did someone find a solution?
In my case it just normalized itself after a few days of usage... strange thing was, that the slow charging affected both, usb and qi charging.
Glad you fixed.
Btw maybe intelligent charging. If phone can't detect a time where you don't use it it have problem adapting charging speed. If you change everyday the moment you put it on charge better deactivate that option
If I may continue this thread, I have another question about the charging. Is it possible to disable fast charging?
I only charge at night so I don't need my phone to warm up from quick charge. On my old Samsung Galaxy Note 9 I could do it, but now I can't find the setting.
Thanks.
MK73DS said:
If I may continue this thread, I have another question about the charging. Is it possible to disable fast charging?
I only charge at night so I don't need my phone to warm up from quick charge. On my old Samsung Galaxy Note 9 I could do it, but now I can't find the setting.
Thanks.
Click to expand...
Click to collapse
The only harmful part of the charge cycle on this phone is the top-off, and you can adjust that. You could use a 5W charger but I doubt it would extend the life.
More beneficial is checking other threads for features that may drain (add wear to) the battery.
MK73DS said:
If I may continue this thread, I have another question about the charging. Is it possible to disable fast charging?
I only charge at night so I don't need my phone to warm up from quick charge. On my old Samsung Galaxy Note 9 I could do it, but now I can't find the setting.
Thanks.
Click to expand...
Click to collapse
Simply use a 12 watt or less brick.
Fast charging needs a compatible 25w brick and cable (Samsung). In most phones it has to be enabled. Disabling fast charging is easy... enabling it sometimes is not
kevinmcmurtrie said:
The only harmful part of the charge cycle on this phone is the top-off, and you can adjust that. You could use a 5W charger but I doubt it would extend the life.
More beneficial is checking other threads for features that may drain (add wear to) the battery.
Click to expand...
Click to collapse
blackhawk said:
Simply use a 12 watt or less brick.
Fast charging needs a compatible 25w brick and cable (Samsung). In most phones it has to be enabled. Disabling fast charging is easy... enabling it sometimes is not
Click to expand...
Click to collapse
The whole point of having a feature is to use it when needed. If I am in a hurry I want to activate 30W charging with a single toggle in the settings. I don't have to bring two different power bricks, one 5W, one 30W, and manually switch between them.
morphius88 said:
Hey Guys,
Anyone else experience slow to almost non existent charging speed if the phone has been on for a few hours?
The only way it goes back to charging fast is if I restart the phone while its plugged into a charger.
I have tried using the stock charger and aftermarket ones and different cables as well. Makes no difference until restart.
Chime in if anyone has any idea whats happening and/or how to fix it.
PS: I am unlocked and rooted if that matters.
Click to expand...
Click to collapse
you should get a new phone it's the only way to fix it because it's broken and you can't fix it when it's like that.

Categories

Resources