got this tonight,
let the battery get down to ~10%
plug it into the OEM USB wall charge and cable, "battery disconnected"
plugged it into my PC with standard micro USB cable " battery disconnected"
pulled out the battery, and now it seems to be taking a charge, is this something others have seen? is a brand new phone on the first battery charge
Charge over four hours to 100%.
Still a problem return it to the seller .
jje
wesg79 said:
got this tonight,
let the battery get down to ~10%
plug it into the OEM USB wall charge and cable, "battery disconnected"
plugged it into my PC with standard micro USB cable " battery disconnected"
pulled out the battery, and now it seems to be taking a charge, is this something others have seen? is a brand new phone on the first battery charge
Click to expand...
Click to collapse
If it says 'battery disconnected' it probably means that your battery is not touching the pins properly.
I had the same problem and i put a small wad of folded paper behind the battery and then slid it in its place. The battery is now pushed firmly against the pins and voila! the connection is proper and no more 'battery disconnected' !
Hope this solves the prob, if it hasn't already been solved
Same situation here, used some contact spray and problem is soled so far.
galaxy s2 i9100 ''battery disconnected '' pop up message
hi ti all
im new here on XDA
reading and searching for solution for my s2 (2 pcs same problem)
battery not charginig, i clean everything, change dock/charge pcb with flat cable and ribbon, change batt, did factory reset,....
still i get message pop-up ''battery disconnected'' if i charge batt outside the phone, insert it in s2, phone works normally
i thing problem is in PBC / motherboard
does anybody have some solution ? or
pcb drawing/blueprint so i can search for problem and fix it (if possible), found drawings on alibaba but 20USD :/
thx in advacne
rgds to all
drago
^^^^
Replace USB board/port. Search for KeithRoss39's guide (it isn't stickied, do a search for 'replace USB charger board' or similar). This is quick/cheap (US$10-$15)/easy to do, Keith's thread has all the info you need.
Dont worry
Hey, This is not a big issue. If you get a message as battery disconnected, then it probably means that you have to turn off your phone and take off your batter and put it back. Simple.
If you see same result again, then just simply buy a new batter. I have faced with this issue but now is ok after just taking off and putting it back.
All the best
Check blogowebgo.com for more tips
that was so simple and efficient
that was so simple and efficient
Took a Q-tip dipped in 91% alcohol and rubbed it to the contacts on both the battery and the phone. No more error. Battery appears to be charging, no problem.
gdanzig1 said:
Took a Q-tip dipped in 91% alcohol and rubbed it to the contacts on both the battery and the phone. No more error. Battery appears to be charging, no problem.
Click to expand...
Click to collapse
Thanks alot
none of the above worked. looked closely at the contacts and realized there was a thin plastic strip on top of the contacts to protect them. a bit hard to remove the plastic strip, but then the battery was no longer "disconnected" of course
old coach said:
none of the above worked. looked closely at the contacts and realized there was a thin plastic strip on top of the contacts to protect them. a bit hard to remove the plastic strip, but then the battery was no longer "disconnected" of course
Click to expand...
Click to collapse
try not to force much the contacts of the usb port or you will be without MTP connection (as happened to me, you can only charge the phone)
Related
Hi all,
I just want to share the solution I used to solve a big shared problem I had with my X10 Mini. During a call my battery went so down I couldn't even turn it on without any sign of hope. As we know in this cases the phone CAN'T charge itself cause it need a software "help" and without a minimal charge the phone is dead. In my case scenario even with Seus holding back the button couldn't solve it.
I decided to solve it without taking it to the 60km away SE support center and:
- taken apart a usb data phone cable
- divided the red wire and the black one
- considered that the USB port gives 5v at 0.5ma
- taken apart the phone case and the rubber cap on the top of the phone
- take out the battery wires connector from the logic board
- inserted red + wire into red hole of the battery connectore and same with the black ones
- connect it to the usb port of a spare computer (you could sacrifice it if something goes wrong)
- wait for a hour to have a good charge starting point
- disconnect everything, reconnect connector, close case and connect to the normal micro usb cable
- evrything will charge as usual.
NOTE: If someone try at his personal risk, BE CAREFUL cause if something cause wrong you could ruin battery, or logic board or pc motherboard!!!
See attachment.
Bye
Nice hack!
Thanks for sharing.
Sent from my E10i using XDA App
Good job, but did u try to charge for a few hours without SIM card? Because I already drained completly and solved problem just removing SIM, putting to charge and waiting. After 2 or 3 hours the system start to charge normally.
WTF? This phone has this problem? Did 2.1 fix it? My wife has the habbit of letting her mobiles die.
I hope that she will not need to take out the SIM card every week to charge her phone.
Thanks for the share by the way.
Yeah this phone got this problem and it's quiet usual I see in different forums. But not always it drains so much like me. I did the BIG error to try a couple of times to turn it on. I tried any combinations of tricks with or withous sims differents ones, different buttons, different charger, etc.... No way! I think that SE support centers has got some kind of charger that has got the female connector of the battery to solve this problem.
Ah I now realised you have a mini and not a mini pro, as mini pro's can have their batteries removed.
I hope I will not have to solve this problem , any time soon.
Good to know anyway.
My battery's been on the fritz for the last days now. Whenever I turn my GS2 off, it will shows tha battery charging screen, then flash to another icon that shows a battery, exclamation mark in a yellow triangle, and a thermometer. It had to plug the charger in to get it to turn on, even though battery was at 100%.
So, I decided to download Battery Doctor to check my batter stats, and it says 'Health: Over Voltage'.
Does anyone know how to fix this? Help would be much appreciated.
I have exactly the same problem. I have not found a sollution, am thinking of calling samsung and explaining the situation. I will post here if i have a sollution.
What OS version are you running?
What Kernel version are you running?
What carrier (if any) did you purchase the phone through?
I'm on 2.3.3 (KE7), using Chainfire's kernel. Phone is carrier unlocked, unbranded from clove.co.uk.
Btw, I think I may have fixed it. I discharged the battery and used a charger with a lower voltage output to get it fully charged. (Charger I used if from my spare phone, a Samsung Champ). It now says that my battery health is good.
Now, the problem is that my phone won't stay powered off when I turn it off. It will stay off for 1-2 secs and power back on. Even if I remove the battery, the phone will power on after i place the battery back without me touching the power button.
Sent from my GT-I9100 using XDA App
aridoasis said:
I'm on 2.3.3 (KE7), using Chainfire's kernel. Phone is carrier unlocked, unbranded from clove.co.uk.
Btw, I think I may have fixed it. I discharged the battery and used a charger with a lower voltage output to get it fully charged. (Charger I used if from my spare phone, a Samsung Champ). It now says that my battery health is good.
Now, the problem is that my phone won't stay powered off when I turn it off. It will stay off for 1-2 secs and power back on. Even if I remove the battery, the phone will power on after i place the battery back without me touching the power button.
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
I have the exact problem. Is the battery health still good? I would like to fix this by myself and not send it in and be without my GS2 for that time.
You should try this:
1. be sure, that your battery is full (charging over night)
1. run the app battery calibrator
2. unplug charger
3. drain battery all the way down till it shuts off
In this way your phone can remember what is 100 % and what is 0%
My sgs2 shows 4,194 V at 100 %
I think your stats (look into battery calibrator) said that 100% are for example 3,8 V
PS: You need root permissions
---------- Post added at 04:55 PM ---------- Previous post was at 04:49 PM ----------
Please post us your current voltage.
I have this exact problem. Battery Calibration is pointless, we all know that.
Did anyone ever find out if this is fixable, or do I have to contact Samsung for a replacement?
It's quite annoying that I can't turn off my phone, it just powers on after about 2 seconds. In addition, I never know how much juice I have left in the battery as the reported capacity can jump from 90% down to 6% in an instant. After a reboot it might go up to 12% but I can still use the phone for hours without it shutting down...
Yeah
I've been having the same problems as all above...
Galaxy S2 on Sensation rom, but its not the rom, i flashed to another and the problem still remains...
It all started with phantom charging...(charging when the charger is not even plugged in and constantly making the "charger connected" sound)
I got the phantom charging fixed by cleaning the charger port with a cotton bud and some cleaning alcohol...But now i have overvoltage...
And just like the others, it'll stay on for example 100% and if you reboot its suddenly on under 10% and slowly works its way up to 20 or 30% without even being charged.
I'm assuming the battery got messed up during phantom charging, in tthis case calibration doesnt help, nor does flashing another rom. Flashing another rom leaves the phone stuck in MTP mode therefore unable to use it as a flash drive.
A vid on youtube reccomends replacing the part of the circuit board to which the charger port is attached and as well as the battery at the same time as the battery always gets messed up with the overvoltage issue....
When i have overvoltage i cannot charge even when its under 10%, unless i leave the charger in and reboot the phone it will then charge once it comes back on and it even says GOOD HEALTH until i unplug the charger.
I'd really like a definite solution to the overvoltage issue...
Bump!
Did anyone find an answer to this problem? Mine has started exhibiting the same behaviour. I haven't been able to search out any solutions...
Cheers, PF.
EDIT: Whoops! Just realised I'd better change that signature to SGS2-able. lol
I am also seeing the same issue for the past 3-4 days, I have switched off the phone and took out the battery, planning to visit samsung support center.
I hard rebooted the phone(which reset it to factory) that did'nt help.
will update once I get more info/help from Samsung support.
Vikas
i had the same problem as you guys and i fixed it by cleaning the contacts on the phone where you connect the charger. use some cotton buds and a needle and some alcohol and clean all the contacts at the bottom of the phone (usb cable slot).
make sure phone is turned off tho whilst doing it. that fixed my over voltage issue.
Hi Guys,
I went to Samsung Mobile Support Center today, they told me that USB mini port has turned slightly green, which means that it has in contact with Water
this will not be covered under warranty and might need to be replaced with charges
Tomorrow they will tell me the exact cost.
I still believe, its not an issue of Power port but with the battery port.
will update if I am able to get it solved.
It's a problem with your usb charging port. The only way to truly fix it is to have the charging port plus circuit board replaced. Happened to me a week back and I tried virtually everything- stock roms, removed root, replaced batteries etc. None of that worked. Some posts said it was a port problem. Went to a tech guy I knew and he confirmed the issue when he disconnected the port. It was relatively cheap for me to fix but some people have climed that samsung charges a large amount to fix it. You're better off trying to get it fixed on your own. If you're on warranty, try and claim it.
Also alot of people are having this issue- yours is about the 5th topic I've seen about this problem this week
Hi Guys,
My problem is solved. Samsung support replaced charging port and the chip it was in(total cost 650/- INR, about 13$)
now phone is working as before.
i have the same problem on my gs2, so can i fixed this problem by cleaning the mini usb port?
andyyody said:
i have the same problem on my gs2, so can i fixed this problem by cleaning the mini usb port?
Click to expand...
Click to collapse
Cleaning the usb port will/might help with phantom charging , but not overvoltage.....
For Overvoltage you may need to replace the whole USB port part of the circuit board (easily obtainable on EBAY) and you have to replace the battery at the same time as well cause the battery (also easily obtainable off ebay) gets damaged with the overvoltage problem.
I have ordered both about a week ago, awaiting 3 weeks for it to arrive to my country.
Good luck with that...
Theres videos on youtube of how to do the repair for overvoltage yourself...
Will report back here if circuit replacement worked for me...
RiD123 said:
Cleaning the usb port will/might help with phantom charging , but not overvoltage.....
For Overvoltage you may need to replace the whole USB port part of the circuit board (easily obtainable on EBAY) and you have to replace the battery at the same time as well cause the battery (also easily obtainable off ebay) gets damaged with the overvoltage problem.
I have ordered both about a week ago, awaiting 3 weeks for it to arrive to my country.
Good luck with that...
Theres videos on youtube of how to do the repair for overvoltage yourself...
Will report back here if circuit replacement worked for me...
Click to expand...
Click to collapse
thank you for you explain,i want to know is it difficult to replace the circuit board by myself?
hey guys, my gs2 also have the same problem, i fixed the problem after i cleaned the usb mini port, it will not show charging whatever i haven't plugged the charger and the problem of over voltage also fixed it YEAH!!!
sorry for my poor english
andyyody said:
thank you for you explain,i want to know is it difficult to replace the circuit board by myself?
Click to expand...
Click to collapse
When you open your s2 for the first time it is tough, but after that it is very easy...
I have already opened mine before to replace the loudspeaker, so it is now easy for me.
Heres the video of how to open your s2:
youtube.com/watch?v=evDCM84xQCA
Heres the video of how to replace the charger port circuit:
youtube.com/watch?v=aChzv3IzxsU
(or do a YOUTUBE search for "Galaxy S2 USB Flex Cable Replacement ")
This video also has comments that explain the cause of this problem...!!!!!!!!!!
That is the part you need to replace, the USB FLEX CABLE...(its the ribbon cable and the board, but they call it a flex cable)
Hope they help you.
RiD123 said:
When you open your s2 for the first time it is tough, but after that it is very easy...
I have already opened mine before to replace the loudspeaker, so it is now easy for me.
Heres the video of how to open your s2:
youtube.com/watch?v=evDCM84xQCA
Heres the video of how to replace the charger port circuit:
youtube.com/watch?v=aChzv3IzxsU
(or do a YOUTUBE search for "Galaxy S2 USB Flex Cable Replacement ")
This video also has comments that explain the cause of this problem...!!!!!!!!!!
That is the part you need to replace, the USB FLEX CABLE...(its the ribbon cable and the board, but they call it a flex cable)
Hope they help you.
Click to expand...
Click to collapse
Thanks, but the problem is solved by cleaning th usb min port, i no need to replace the flex cable anymore,.
Hi There, Does anyone know if it's possible to use the Galaxy S2 without a battery, or trick it into thinking it does have one and just run off power?
My phone works, but kills a battery in about 30 minutes. There's one resistor in there that gets super hot after being water damaged, but only with a battery in.
Wouldn't know where to buy a new resistor, so wouldn't mind leaving it permanently docked and run my audio for the house through it if I can somehow run it without a battery
.
I think it can run without battery but can't boot without battery
Sent from my sgs2 running cm9 using xda app
Makrilli said:
I think it can run without battery but can't boot without battery
Click to expand...
Click to collapse
Just tried that on another S2 I have and it didn't work
Sorry to revive a old thread, but I would also like to know if there is a way to trick the phone into booting from a power supply instead of a battery. I am attempting to hardwire an old S2 into an imbedded in car media player blah blah blah.....long story short I have issues using the battery.
If I leave the phone plugged into a constant powered USB when the car is off and the phone is sitting dormant it over charges, the battery gets super hot, I get the overcharge/overheat warning etc. If I disconnect it, then I have two issues, first it loses charge as it is in use and pulling it when I park means having to bring it inside and top it off etc. The second problem is....it kind of defeats the purpose of an "embedded system".
I have the software set up perfectly and I love the way it all works. My only current hitch is the battery issue. If I can bypass it I know I can run a off delay relay, so that when the car is shut off the USB cord stays "hot" for say 1 hour then shuts off thus removing power. This option seems tedious and the parts more expensive then a simple power supply replacement. Unfortunately I do not know the software side.
I have been able to get the phone to boot without a battery, however as soon as it is done booting I get the "battery low, plug in" warning, then a few seconds later the phone shuts off........Is there a way to keep the phone from shutting down at that point, or get it to ignore the fact the "battery" is at 0%?
Edit: When I say I can get it to boot without a battery, I am wiring a power supply directly to the two pins that the battery + and - would be touching.
techoverload said:
Sorry to revive a old thread, but I would also like to know if there is a way to trick the phone into booting from a power supply instead of a battery. I am attempting to hardwire an old S2 into an imbedded in car media player blah blah blah.....long story short I have issues using the battery.
If I leave the phone plugged into a constant powered USB when the car is off and the phone is sitting dormant it over charges, the battery gets super hot, I get the overcharge/overheat warning etc. If I disconnect it, then I have two issues, first it loses charge as it is in use and pulling it when I park means having to bring it inside and top it off etc. The second problem is....it kind of defeats the purpose of an "embedded system".
I have the software set up perfectly and I love the way it all works. My only current hitch is the battery issue. If I can bypass it I know I can run a off delay relay, so that when the car is shut off the USB cord stays "hot" for say 1 hour then shuts off thus removing power. This option seems tedious and the parts more expensive then a simple power supply replacement. Unfortunately I do not know the software side.
I have been able to get the phone to boot without a battery, however as soon as it is done booting I get the "battery low, plug in" warning, then a few seconds later the phone shuts off........Is there a way to keep the phone from shutting down at that point, or get it to ignore the fact the "battery" is at 0%?
Edit: When I say I can get it to boot without a battery, I am wiring a power supply directly to the two pins that the battery + and - would be touching.
Click to expand...
Click to collapse
bump
any solutions to this yet?
the phone has a circuit that controls power and charge level by communicating with the battery so it will always know that the battery is removed because the battery feedback circuit will not be present.
Sorry for reviving an old thread, but i have a solution that may help others out.
I have found a way to power the Galaxy S2 GT-I9100T from an external power supply ( i have also tested on S3 GT-I9300 and S5 SM-G900I).
My first step was to create a dummy battery out of perspex, you could use any non conductive material.
Make sure you include the alignment notches and keep it as close to the size of the original battery so it is a snug fit and wont accidentally fall out.
When you know the perspex fits you can start fitting the contact terminals, make sure you have the polarity correct and that they line up with the contact terminals of the original battery and the spring terminals in the phone.
Once you have the terminals fitted you can then look at powering up your phone, i used a LM2596 based DC-DC converter that i had laying around.
If you are using a variable DC-DC converter like i did make sure you adjust the output of the power supply BEFORE connecting to your phone to prevent you destroying your device.
My DC-DC converter is set at 3.88 Volts, this value seems to trick the phone into thinking it has a battery with greater than 40% charge that way you don't get the annoying low battery alerts.
Pic.1
Pic.2
Pic.3
Pic.4
Pic.5
How about taking your admittedly innovative idea one stage further.......
If you have an old battery laying around, why not (very carefully) remove the top part of it for use with your perspex replacement....this top section contains the overcharge protection circuit which would help to provide added protection to the device....it also has the benefits of the facts that the battery connection points are already in place and correctly aligned (it also has those alignment notches at either end).....imo, an improvement on an already good idea....
I got problem with my SGS 2 - after long on-shelf time battery drained to absoltely zero. My voltometer showed 0 on every connector. I was unable to charge or boot my phone (24h+ on charger, no signs of life). Dead, bricked, gone... Battery was relatively new (some months) so I didn't want to buy another one. Then I read Spud2233's post... and tried it .Well, kind of variation. I connected charger to phone's USB port and additional power (Motorola's dual port charger) to internal batterys connector (simly stripped old USB cable). Then battery was inserted and.... voila! After 2 or 3 retries my phone booted in and started to charge. I disconected additional power cable, phone is loading as usual. Battery revived!
Thanks for inspiration, Spud2233!
szydas said:
I got problem with my SGS 2 - after long on-shelf time battery drained to absoltely zero. My voltometer showed 0 on every connector. I was unable to charge or boot my phone (24h+ on charger, no signs of life). Dead, bricked, gone... Battery was relatively new (some months) so I didn't want to buy another one. Then I read Spud2233's post... and tried it .Well, kind of variation. I connected charger to phone's USB port and additional power (Motorola's dual port charger) to internal batterys connector (simly stripped old USB cable). Then battery was inserted and.... voila! After 2 or 3 retries my phone booted in and started to charge. I disconected additional power cable, phone is loading as usual. Battery revived!
Thanks for inspiration, Spud2233!
Click to expand...
Click to collapse
Just registered to say thanks for this tip!
I too have had SII batteries go dead after too long, and the SII seems to be unable to power up without a voltage across the battery terminals.
I used a small variable power supply set to about 3.5 V. I trimmed some thin hookup wire until only a few strands were left and 'pinched' them between the battery terminals and the phone battery contacts. Then with a charger plugged in to the phone I was able to 'trick' the phone into turning on. Once booted the battery charged fine.
Note I think this should be done quickly as the phone and power supply will fight each other for as long as the voltage is placed on the contact, so I pulled the PS wires out (keeping the battery in) as soon as the phone was booted up.
szydas said:
I got problem with my SGS 2 - after long on-shelf time battery drained to absoltely zero. My voltometer showed 0 on every connector. I was unable to charge or boot my phone (24h+ on charger, no signs of life). Dead, bricked, gone... Battery was relatively new (some months) so I didn't want to buy another one. Then I read Spud2233's post... and tried it .Well, kind of variation. I connected charger to phone's USB port and additional power (Motorola's dual port charger) to internal batterys connector (simly stripped old USB cable). Then battery was inserted and.... voila! After 2 or 3 retries my phone booted in and started to charge. I disconected additional power cable, phone is loading as usual. Battery revived!
Thanks for inspiration, Spud2233!
Click to expand...
Click to collapse
Thank you so much for the solution to my problem! I have purchased TWO batteries already and they both stopped working after drained to zero. I was blaming a charger or a quality of the battery. I found other posts suggesting to remove a capacitor but it wasn't broken...
Thanks to you, I have just booted my phone, pulled out extra power after couple minutes and it charging on its own now! (well 5% as I speak).
fpN3eqU said:
Just registered to say thanks for this tip!
I too have had SII batteries go dead after too long, and the SII seems to be unable to power up without a voltage across the battery terminals.
I used a small variable power supply set to about 3.5 V. I trimmed some thin hookup wire until only a few strands were left and 'pinched' them between the battery terminals and the phone battery contacts. Then with a charger plugged in to the phone I was able to 'trick' the phone into turning on. Once booted the battery charged fine.
Note I think this should be done quickly as the phone and power supply will fight each other for as long as the voltage is placed on the contact, so I pulled the PS wires out (keeping the battery in) as soon as the phone was booted up.
Click to expand...
Click to collapse
szydas said:
I got problem with my SGS 2 - after long on-shelf time battery drained to absoltely zero. My voltometer showed 0 on every connector. I was unable to charge or boot my phone (24h+ on charger, no signs of life). Dead, bricked, gone... Battery was relatively new (some months) so I didn't want to buy another one. Then I read Spud2233's post... and tried it .Well, kind of variation. I connected charger to phone's USB port and additional power (Motorola's dual port charger) to internal batterys connector (simly stripped old USB cable). Then battery was inserted and.... voila! After 2 or 3 retries my phone booted in and started to charge. I disconected additional power cable, phone is loading as usual. Battery revived!
Thanks for inspiration, Spud2233!
Click to expand...
Click to collapse
I am in the same situation with SII batteries go dead after too long.
I do not understand this part
''I connected charger to phone's USB port and additional power (Motorola's dual port charger) to internal batterys connector (simly stripped old USB cable). Then battery was inserted and.... voila!''
or this part
'' I trimmed some thin hookup wire until only a few strands were left and 'pinched' them between the battery terminals and the phone battery contacts. Then with a charger plugged in to the phone I was able to 'trick' the phone into turning on.''
how is this different than inserting the battery in the phone and then connecting the usb power supply?
blue whale said:
how is this different than inserting the battery in the phone and then connecting the usb power supply?
Click to expand...
Click to collapse
The phone won't charge the battery if it doesn't detect (sufficient) voltage. You can "jump start" the charging process by tricking it with a fixed voltage across the terminals.
so I take my dead battery, then
-take a usb charger+usb cable
-strip the usb cable to get two strands
-put one strand of the usb cable on the + of the battery
-put one strand of the usb cable on the - of the battery
=>the battery is charging
[or easier, I take battery like this,
put one strand of an electric cable on the +, connect this cable to the + of the phone battery, then put one strand of the electric cable on the - of the battery and the - of the phone battery
then I put the battey in the phone with usb power supply IN and the phone boots ???
I wouldn't use a USB cable, 5 V is probably too high.
blue whale said:
or easier, I take battery like this, put one strand of an electric cable on the +, connect this cable to the + of the phone battery, then put one strand of the electric cable on the - of the battery and the - of the phone battery then I put the battey in the phone with usb power supply IN and the phone boots ???
Click to expand...
Click to collapse
Yep, that's exactly what I did (except I used a 3.5 V power supply).
Once the phone has begun booting you should probably disconnect the "jump start" battery as quickly as possible or it'll fight the charging circuit.
fpN3eqU said:
I wouldn't use a USB cable, 5 V is probably too high.
Yep, that's exactly what I did (except I used a 3.5 V power supply).
Once the phone has begun booting you should probably disconnect the "jump start" battery as quickly as possible or it'll fight the charging circuit.
Click to expand...
Click to collapse
but you agree that connecting the phone battery the charged green battery is like charging the phone battery [at least a bit]?
then I would just use the phone battery normally, by inserting it into the phone and boot the phone and finish to charge the phone battery.
blue whale said:
but you agree that connecting the phone battery the charged green battery is like charging the phone battery [at least a bit]?
then I would just use the phone battery normally, by inserting it into the phone and boot the phone and finish to charge the phone battery.
Click to expand...
Click to collapse
Not really, the SII battery will still be dead after a few seconds "charging". Getting the voltage across the phone battery terminals tricks the phone that there's a charged battery present so it will boot and continue charging it. Otherwise it gets stuck in something like a boot loop looking for the battery (mine did anyway).
If you could charge it separately from the phone then obviously you'd just do that.
Thank you for all your tips. I tried similar stuff, but I guess the voltage was just not right.
So I asked around to get a spare battery, which which I powered on the phone. It worked like charm.
I change the battery while the phone was running and tada! my phone was loading the "out of order" battery just fine.
Pretty much the same trick you guys did, but with less soldering and more quick magic happening ^^
regsnerven said:
Thank you for all your tips. I tried similar stuff, but I guess the voltage was just not right.
So I asked around to get a spare battery, which which I powered on the phone. It worked like charm.
I change the battery while the phone was running and tada! my phone was loading the "out of order" battery just fine.
Pretty much the same trick you guys did, but with less soldering and more quick magic happening ^^
Click to expand...
Click to collapse
I did just that to my s2 and his dead battery.
I was scared to go with ONLY a 18650 battery to charge the dead battery (no phone or usb charger involved) : I did not know if I should connect pole+ of the 18650 with pole + of dead battery (and pole - of 18650 with pole - of dead battery) which is the parallel scheme or the opposite, to go with the ''series'' scheme
blue whale said:
I was scared to go with ONLY a 18650 battery to charge the dead battery (no phone or usb charger involved) : I did not know if I should connect pole+ of the 18650 with pole + of dead battery (and pole - of 18650 with pole - of dead battery) which is the parallel scheme or the opposite, to go with the ''series'' scheme
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You were right to be scared. You should not do that. The dead battery might draw too much current. That could be dangerous. Read a bit about how charging of Li-Ion batteries works: first you charge with constant current (CC), which depends on the battery's design, once it reaches the correct voltage (4.2 V for a single cell), it should go into constant voltage mode, and then you have to know at what time or remaining current you shut the charger off. A good rule of thumb is to wait till the current drops to 10% of the charging current. E.g. if you were charging the battery with 1 A***, you should turn off the charger when it's down to 100 mA.
***1 A is just an example that would work for most modern phone batteries. However, this can be different! Ideally it's written on the battery.
Also, it's very well possible that in newer phones the battery will only output voltage if the charging circuit inside the phone allows it to. At least that's the case in notebooks for many years, and I don't see why it should be very different for phones.
:crying: So this is the first time in a while I have posted here. But annoyingly enough my Gtab (for the second time) has not been taking charge. It will turn on when plugged it (but no red light) so I assume its the battery that won't take a charge. The last time this happened I formatted it, then nvflashed it, and let it sit for 24 hrs before charging. I will try that again but any help or input is appreciated
One of my Gtabs doesn't charge very well either. The charging pin is messed up and will only charge when I plug it in and prop it in a certain way. Sometimes the red light turns off, sometimes it stays on but still doesn't charge. Eventually I will have to re-solder the connection, but have been putting it off. If you cannot fix it by other means (try a different charging cable? reflash as you suggested?) here is a good set of instructions on how to do this.
Gtab Charging Pin Repair
Good luck and I hope it doesn't come to this. You could also buy a charging dock if you don't want to tear apart and solder your tablet. Also, here is some info on battery replacement if that turns out to be your problem.
Info on Gtab Battery
Gtab Battery Ebay (not advertising, just trying to help)
+1 to DaggerDave's suggestion.
From my research the Gtabs power plug is very VERY flimsy. I've had to solder mine back on (and a hefty amounts of glue) and now it works fine, though I treat it very delicately. The dock is going at around $50 on fleabay (search malata/gtab dock)
YAY
DaggerDave said:
One of my Gtabs doesn't charge very well either. The charging pin is messed up and will only charge when I plug it in and prop it in a certain way. Sometimes the red light turns off, sometimes it stays on but still doesn't charge. Eventually I will have to re-solder the connection, but have been putting it off. If you cannot fix it by other means (try a different charging cable? reflash as you suggested?) here is a good set of instructions on how to do this.
Gtab Charging Pin Repair
Good luck and I hope it doesn't come to this. You could also buy a charging dock if you don't want to tear apart and solder your tablet. Also, here is some info on battery replacement if that turns out to be your problem.
Info on Gtab Battery
Gtab Battery Ebay (not advertising, just trying to help)
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tthats really good information thanks! :laugh:
but i did get it to work. I opened up my tablet and checked to make sure the battery was plugged in its socket thing. Guess what. it wasnt.
It probably became loose when i had to open it up to fix my screen. So all i did was reattach it and put a small piece of electrical tape over it, just in case.
:laugh:
Im using android 4.0.4 (officially updated) on my galaxy s2 and when i put the charger the phone dont even recognize it ,and it shows like is charging all the time.The battery icon on the corner keeps going and showing again after some min i take out the charger .This happens until buttery goes to 60% or something like that and than the text (charging) on the lock screen goes away and the icon on the corner stays like normal,but if i put the charger the same thing happends again. I tried different chargers and another battery.
My brother told me that after i updated my phone he saw something like "Charging paused. Voltage too high" but i havend seen it anomore.The battery on options menu says "1 day 8 hours 16m 33s on battery which is not normal i thing"
Please help me with this thing.
sorry for my bad english.
funnycun said:
Im using android 4.0.4 (officially updated) on my galaxy s2 and when i put the charger the phone dont even recognize it ,and it shows like is charging all the time.The battery icon on the corner keeps going and showing again after some min i take out the charger .This happens until buttery goes to 60% or something like that and than the text (charging) on the lock screen goes away and the icon on the corner stays like normal,but if i put the charger the same thing happends again. I tried different chargers and another battery.
My brother told me that after i updated my phone he saw something like "Charging paused. Voltage too high" but i havend seen it anomore.The battery on options menu says "1 day 8 hours 16m 33s on battery which is not normal i thing"
Please help me with this thing.
sorry for my bad english.
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check the usb port may need cleaning this happened to me and one of pins were bent unlucky for me i fiddled and broke usb completely now i swap battery's from desktop charger.
DJBoxer said:
check the usb port may need cleaning this happened to me and one of pins were bent unlucky for me i fiddled and broke usb completely now i swap battery's from desktop charger.
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Hmm , can you tell me how to clean the port or what to use not to bent them and one more thing, as i can see the pins are so small so how do i know if one of them is bent or not
,,,
tried cleanin the port,removing the battery for 20 min and still the same
its port problem, i tried fixing myself but didnt work, i had exact same problem, i sent it in for warranty, and samsung just sent my phone back today, and they replaced "usb port" according to receipt
"Cyber Clean" did it for me, was able to get in to the tiny spots and pull out the dust, etc. that was causing the problem.
DO NOT try to shove anything hard (Like a Q-Tip) into the space, it will break the connection.
You can also place a *newish* USB port in and out a few times, often that can dislodge whatever got in there.
BE VERY GENTLE as this is the weak part in the phone. If you break this you will need to use a wall charger.
i tried cleanin with a lot of things and it seems to be so clean now and the pins are not bent , but i dont think that the problem is at this part because when the battery goes under 60% everything returns to normal ...
I also have the same issue...is it the hardware or software issue?? kindly assist....
This is called "ghost charging". It has dozens of threads already, use the search before posting.
Your solution is here - http://bit.ly/10U9n1r
Sent from my digital submersible hovercraft.