my wizard battery won't charge.
i have tried another battery and another rom with no change.
wehn i plug in the sync cord, the izard reognizes that it is on external power but just won't charge the battery.
any ideas.
thanks
...try to find out, by measuring, if the ±5Volt DC is present on the pins on the inside of the ppc which is needed to charge the battery. Probably your charging circuit is busted and the ppc should brought back for repairs...
thanks for the response
what is ppc
where do i measure the voltage.
when i first connect the sync cable, it starts to charge for one or two seconds and then stops and reverts to a normal non charging screen.
thanks
PPC stands for Pocket PC
What you speak of, I had the same problem on my wizard.
My battery finally died and I couldnt re-vive my phone.
I bought a new battery off of ebay, put it in, plugged it into the charger that came with my phone, let it charge overnight and I havent had a charging problem yet.
My advice, as well as alot of others on this board, dont use any other charger other than the one that the phone came with. I know I wont be.
...inside your ppc,when you remove your battery, you'll see different connection pins which are normally connected to the battery. With power attached (and without battery) you measure between 2 pins at a time. WATCH OUT for shortcircuiting, be careful!!!. You can use an analog or digital voltagemeter. I don't know which pins, so you have to try it yourself.
You should measure ±5 Volt DC which's delivered by your adapter. If there's no power then your charging circuit is defect and you'll have to let it repair...
reading about a volt on the internal pins that connect to the battery.
so it's the charging circuit.
damn
I had the same problem twice with 2 different batteries. it seems if the batterie dies completely, the device can not recharge itself. something like a car, you need to have enough juice to start the car so you can recharge the battery.
I took 2 paper clips that i used to connect the charger directly to the battery( bypassing the phone). you need to be careful with that, make sure you connect the right battery pins. I left my battery like this for 15min, just enough to have aniough power to start the phone and continue the charging process regularly.
As mlarif said the battery can fail to charge if totally discharged. So if you are not absolutely certain your circuit is faulty there are at least two threads here describing how to butcher a usb cable to jump start the battery.
Sorry I can't remember the colours of the wires off the top of my head. But a search may find the relavent posts.
...you can also use a 9 VDC battery to give the ppc batteries a boost for a few seconds. But indeed be sure to use the right pins
(btw did you measure any VDC on the batteries..?)
The tablet doesn't seem to be charging with the provided charger ... is this normal ? Any known issue ? Or just a defect (bad luck) charger ?
disconnect charger for 20 mins , retry check USB connector it can be inserted backward. remove country prong adapter,check and reattach. Make sure the battery is never discharged to zero. LiPos do not like this.
I freaked out like this too for a whole day until I realized that damn country prong adapter had come a little bit loose. Its unnoticeable, but does happen. Try like the previous poster said and remove and reattach the country adapter to the plug.
I will try this, but even plugged into computer it won't go over 15% ... and even discharge when plugged ...
masterfred said:
I will try this, but even plugged into computer it won't go over 15% ... and even discharge when plugged ...
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Click to collapse
If you mean here you were trying to charge with the computer. It makes sense. as the usb port on a computer has very limited current capability and will charge with TF off but takes 24 hrs.
This happened to me as well. Took apart the charger, blew on it a couple times and dusted it off, then reattached the 2 pieces. It's now charging again!
Ok so last night I flashed my HD2 with MIUI last night and everything worked out great. So I went to sleep, the battery was around 35% so I let it sit in the charger in my computer. Next morning I wake up no response from the phone. Nothing, net even the orange charging light at the top. Everything is connected properly what do you think is the issue? Should I let it sit for a bit more? I also think there is an issue with the USB cable it's those one dollar cables off e-bay and it's starting to show the internal wires at the end.
probably battery is dead flat & will need charging externally from your device.
You can use a cut usb lead with + & - leads on correct battery pins for 10 minutes or so then insert battery & boot device & connect to charge.
Problem is MIUI will not charge when device is off or with a totally flat battery.
Mister B said:
probably battery is dead flat & will need charging externally from your device.
You can use a cut usb lead with + & - leads on correct battery pins for 10 minutes or so then insert battery & boot device & connect to charge.
Problem is MIUI will not charge when device is off or with a totally flat battery.
Click to expand...
Click to collapse
Ok, this time I'm about to buy a GOOD quality micro usb cable. With the old one I'll try what you said I don't want to ruin the battery or anything so is there anything I should take in account before and tips?
hi i have a nexus 4 12 months . i bought a battery from ebay 5 months ago .before 1 month my main battery was inflate a little and the back housing of the phone cant close proper.i swaped the battery .the new battery charge only to 16% and then discharge with the charger on .when i plug out the charger the battery discharge fast to 4% and shut down.
i bought a 3rd battery from ebay
i charge my phone closed 30min now and the phone dont have power to turn on.
the charger is the official with the official cable from lg
I do something wrong??
sorry for poor english.
It could be the charging flex that is broken. But these batteries from ebay could easily be bad copies which don't work. I know spareslg.com sell genuine parts if you want to be sure.
I have a similar problem. The battery was draining really fast and not charging when plugged in, so I got a new battery. It still didn't charge so I tried a wireless charger. That does work but it will not charge via USB. When plugged in, the icon changes to the charging icon but it doesn't say that it is actually charging. In the battery status screen it says "not charging."
Would my next step to be to try to replace the USB port? I've cleaned it out as best as I can with a toothpick and used some contact cleaner as well.
I think the problem is with the way you replace your old battery
Are you sure you replace it correctly ?
I had previously successfully replaced the screen after I dropped and shattered the phone. To do that, I successfully disassembled and reassembled the phone with no issues. I ensured all connections were tight when I replaced the battery and disassembled again tonight to check all the connections and the battery still will not charge -- both the old and new battery. I do not believe at this point that the battery is the problem.
As many other of you, I have had problems with my battery charging properly. Often it would only charge up to 40-60%. Usually, I could fix this problem by running my battery down to 2%, then turning it off and plugging in the charger. Most of the time it would charge up to 100% then, save for a few times it didn't.
Still, I was getting annoyed by this, so I figured I might as well try pulling the battery out and plugging it back in. And, wow, did it fix some issues for me. So far, my battery is charging itself back to 100% without having the pull the plug multiple times. But maybe even better, it gave me a completely renewed battery life.
Before reseating the battery, I was getting about 5-7.5 hours battery life depending on what I was doing. After reseating, I now have about 10.5 hours of battery life. That's a HUGE difference. The attached images below show my latest 10.5 hour battery life with about 9% left, which should give me another 45 minutes to an hour if I needed it. Power saving was on during the entire time, screen brightness varied between 10-25%. Mostly I internetted, reddited, used Feedly, 1.5 hour of youtube viewing. I put the tablet in airplane mode for one night to see if it gave any significant battery life, but it only took about 1% during the night it wasn't in airplane mode. Sync with all my accounts was also on the entire time. Android version is stock, rooted, though I only use Xposed and Greenify.
If it stays like this, this will be the first time I am truely happy with my battery life.
To reseat the battery, I used this Youtube video:
www.youtube.com/watch?v=lEVFYQksmxM
If you want to try it, which I certainly recommend, you can try pulling out only the battery cable. I wasn't able to, I didn't want to put too much stress on the cabling, so I unscrewed the entire battery. It's not stuck with adhesive anyway. I do however recommend strongly that you use this guide to pull of the back cover, instead of opening at the screen:
www.youtube.com/watch?v=f5vTAeWyq7I
Can't link to the video's themselves, I am not allowed to do that yet. I believe this video was made by someone on XDA? Please give a shout out, so I can give you proper credits for it. Becareful when opening the device when near the USB port and the audio jack. The plastic connecting to the tablet itself seems very fragile in those places.
Thanks for sharing.
Same experience, I did it two days ago after noticing that it stopped charging at 96%. With the same usage I should have needed to recharge it by now but I still have 52% battery left with my usual 3 hours of screen on over 48 hours. So it doubled the battery life .
I did remove only the connector, I used a plastic coated paper clip that I passed under the cables to pop it off. The cables are strongly attached enough to remove the connector without any issue.
I think I'll keep this tablet longer than I thought, the processor and screen being future-proof.
I'll try it and post my results...
Anybody else tried that or has a clue why that happened?
reseating battery helped, now won't charge from USB
I too have been frustrated with charging and battery issues on my Tab Pro 8.4. So I tried the battery reseating trick.
I can now report, that it has helped with battery life. But a new issue came up.
Previously, I could not reliable charge the tablet on AC power ( USB cable connected to the AC charger ). It would not charge to 100%. The solution was to charge from an USB port on my Mac. This would charge to 100%.
After the battery reseat trick, the tablet does not charge over USB, but charges nicely to 100% on AC. And the battery life is much better.
Right now, I am trying if the battery is even charging over USB while off. The little dots are scrolling on the screen, seems something thinks the charging is ongoing, but I need more time to see if the charge level has moved up.
Any ideas ? Thanks, Paul.
I had also proceed to that "surgery". Battery life seems better but it could be placebo. Im not sure.
But 3 times in a row charging went from 15, 20, 35 % straight to 100.
To the usb charging issue mentioned, due to the bad contactivity of the battery cable before tha fix, it may displayed false reading of charging level. The normal changing time from a standard usb port is at least 4 to 5 times longer than the original charger (2000mA vs 500mA max). So you have to wait longer for a usb charging level change.
About the USB charging issue - the device does charge when off, while plugged into an USB port on a Mac. When the device is ON, the battery icon shows a red cross, and the info in the Battery windows of settings is showing Not Charging. My guess is that this is some restriction on the firmware, that does not attempt to charge the device while having a data link on the USB. I will try to obtain a charging-only cable, to see if that fixes the issue.
Paul.
Just checked for myself, but my cable that came with the tablet doesn't work either. Tried it with different cables too and the same red icon pops up in the battery. I honestly never tried charging it myself via my PC before I reseated the battery. Maybe it has something to do with the fact a PC USB 2.0 port can only supply 500mAh, which isn't enough for the tablet (while it is turned on)?
I m also suffering from this charging problem...i wish to reseat bt i have a question...after opening the back cover does it reinsert normally or i need glue..?
I tried first to remove the back cover. Some of the clips chipped off. So I removed the screen. No damage removing the screen. Just be patient to unclip all spots all around the screen
kensheen said:
I m also suffering from this charging problem...i wish to reseat bt i have a question...after opening the back cover does it reinsert normally or i need glue..?
Click to expand...
Click to collapse
There is some adhesive between the cover and the tablet itself, but mostly there are a lot of small plastic pins that lock in place. I did not add any new adhesive, and I honestly can't tell the difference.
paokaras45 said:
I tried first to remove the back cover. Some of the clips chipped off. So I removed the screen. No damage removing the screen. Just be patient to unclip all spots all around the screen
Click to expand...
Click to collapse
Oh that doesn't sound good. Is the back cover still fine now with the chipped pins? I personally didn't try via the screen since I saw an image in a different thread of someone getting bubbles of some kind in one of his screen corners.
The fit close to the ir port is not as tight as before. I don't mind because i use a case. The screen came off without any issues.
PS: after power on the tablet for the first time, i forgot to set time and date. It didnt connect to any secure site or servive (play store, youtube, facebook). So keep in mind to set them correctly
paokaras45 said:
The fit close to the ir port is not as tight as before. I don't mind because i use a case. The screen came off without any issues.
PS: after power on the tablet for the first time, i forgot to set time and date. It didnt connect to any secure site or servive (play store, youtube, facebook). So keep in mind to set them correctly
Click to expand...
Click to collapse
So, after some days, how do you note the battery? Improved indeed?
favero_ said:
So, after some days, how do you note the battery? Improved indeed?
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Click to collapse
I think yes. I now get full charge every time (5 times from various percentages) and screen on time increased by an hour approximately. Maybe its from the better changing cycles.
With medium usage (tapatalk 20%, greader 30%, facebook 20%, youtube 30%) no gaming at all i get about 6 or more s.o.t. at 20% brightness most of the time.
Right now i am at 30% left with 5 hours sot, unpluged 13 hours ago.
I reseated my battery..now my tab pro showed it is full charged after long time. Previously it didnt cross 29% even i charge it for whole day..battery is better now. I opened the back cover by ruler and reseated only the battery connection as shown by video...
thankx sicron.
are you guys sure there is nothing wrong with your charger, you should get a usb amp reader (like $5 on ebay) and make sure the tablet is pulling 1800~ mA when it charges from 50% or less (rate will drop when it gets close to full)
Also always use the Samsung cable that came with the tablet since it has high quality Copper wires that can carry the correct 2A current , if you use another cable it is most-likely only rated for 500 mA (Computer USB current) and will either
1. Not carry enough current to properly charge the tablet.
2. start charging ok but as the cable heats up (or contact pins on the usb parts) it will start to degrade
I suggest only using the Samsung wall charger, and never Ipad , iphone, computer or other brand chargers to charge it.
otyg said:
are you guys sure there is nothing wrong with your charger, you should get a usb amp reader (like $5 on ebay) and make sure the tablet is pulling 1800~ mA when it charges from 50% or less (rate will drop when it gets close to full)
Also always use the Samsung cable that came with the tablet since it has high quality Copper wires that can carry the correct 2A current , if you use another cable it is most-likely only rated for 500 mA (Computer USB current) and will either
1. Not carry enough current to properly charge the tablet.
2. start charging ok but as the cable heats up (or contact pins on the usb parts) it will start to degrade
I suggest only using the Samsung wall charger, and never Ipad , iphone, computer or other brand chargers to charge it.
Click to expand...
Click to collapse
It is definitely not the charger, otherwise the problem wouldn't be fixed by reseating the battery. Which happens to work for a lot of people. I personally tried a Nexus 7 2012 2A charger both with the original cable and with my Samsung cable. I also tried the OnePlus One charger (2A or 2.1A, not sure) with both cables and it didn't charge. It seems to me it is some kind of calibration issue, that somehow gets fixed by unplugging the battery and plugging it in again.
Sicron said:
It is definitely not the charger, otherwise the problem wouldn't be fixed by reseating the battery. Which happens to work for a lot of people. I personally tried a Nexus 7 2012 2A charger both with the original cable and with my Samsung cable. I also tried the OnePlus One charger (2A or 2.1A, not sure) with both cables and it didn't charge. It seems to me it is some kind of calibration issue, that somehow gets fixed by unplugging the battery and plugging it in again.
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Click to collapse
Yeah strange, maybe some-kind of a bad connection on the battery clip where on the assembly line it didn't get fully pressed down or just comes loose overtime, and maybe the battery wasn't reporting back stats correctly (if you look in logcat you can see it constantly is getting updates from the battery circuitry)
would be interesting to see what logcat reports on a device with this problem (might need root logcat)
IE mine shows this.
D/BatteryService( 944): level:61, scale:100, status:3, health:2, present:true, voltage: 3836, temperature: 248, technology: Li-ion, AC powered:false, USB powered:false, Wireless powered:false, icon:17303447, invalid charger:0, online:1, current avg:-784, charge type:0, power sharing:false
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I completed the battery reseating and can say it definitely has improved the battery charging and performance. Prior to I was having the charging stopping issue at various percentages. Since the reseating it now charges 100% and the battery performance has definitely increased by at least 20%. Would recommend to do this if your having battery issues. Take off the back cover as it is very easy. Just need to go slow around the perimeter. It is help on by small clips and glue. Use a slow and forceful prying with a credit card and the back cover will slowly become undone. Area around the charging port has a little extra glue so may take a little more force.