[Q] Xperia T battery problem - Sony Xperia T, TL, TX, V

*snip*

From your description, it seems like the battery is defective.
I had a similar experience.

I am the king of this experience my battery was dead in the same way the phone shut donw immediately after unplug it from the wall
Inviato dal mio GT-I9300 con Tapatalk 4

It's coming, one year after release, all batteries will be dead.
Btw. I changed my battery about 2 months ago and now, when I have about 3% and I am using GPS, the phone shuts down without warning.
I guess I can say that. Xperia T is really poor product. I've never had so bad experience with battery or power manager or whatever is responsible for this, on any mobile device I've owned.
Poor Bond...

*snip*

Christophelaures said:
I got my phone less than 2 months ago, what fun it is when it already dies. they shouldn't have made built-in batteries, because you can't replace them so easily anymore
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Click to collapse
It's a longshot, but it might be that the battery connector is not completely secure, and ends up getting enough of a juice boost when you plug in the charger, maybe because it's a 5V charger and the battery is rated at 3.7V.
LT30p instruction: open the sim/memory flap, remove the little screw ion the side, and carefully pry the case open with a plastic tool along the entire edge, bit by bit, until it pops off real easy.
LT30a instruction: pry off the top and bottom back pieces (they feel more rubbery than the main piece) and remove all 4 screw holding down the main piece, and carefully pry the case open with a plastic tool along the entire edge, bit by bit, until it pops off real easy.
The battery connector should have the "+" and "-" symbols on the top, but there shouldn't be a problem finding it (it's obviously next to the battery )
Good Luck

This is really not the connector problem, when it happens over and over again, even with new battery.
I've been monitoring voltage drop under different circumstances. Even with new battery and over 1000mA drain, the voltage drops by almost 300mV.
I've been using batteries in other device types, capable to give more than 20C, without such voltage drop.
I know that I can't compare big batteries from helicopter models with this one, but 1000mA is only 0,56C of 1780mAh battery. And the worst thing is, that this should be a "Bond" phone.

Good morning I tried to disassemble the battery to change only the cell pack but without positive results the problem is the metallic pin where the battery is plugged they are in inverted position and the battery does not enter in its position. I am wait the new that come from Cina and need more time
Inviato dal mio GT-I9300 con Tapatalk 4

I had the same problem happen to me. I purchased my Xperia T in October 2012 and have only been experiencing these restarts for about 2 weeks from now. The gut feeling I had that started this was after I was using my phone as a GPS and charging it in my car at the same time, my phone became really hot and shut itself down.
Anyways, I almost 100% knew it was the battery. SO, I went online to purchase a Brand new battery and replaced it myself. After 2 days use, it is as good as New. (so far) Proving more to the point that is was indeed the battery.
I knew that if I sent it to Sony they would take too long and possibly not even fix it. Instead it took me a few mins to look for the New battery and less than 30 mins to install it!
If anyone needs help replacing their broken battery with a new one, message me.
Hope this helps.

My XT is 5 months old and last saturday I started experiencing same issues but I thought it was caused by faulty SIM card. I reset my phone, made repair several times with SUS and PC Companion but without success. When I remove SIM card phone will boot normaly but when SIM is inserted and battery level is under 50% it will shuts down as soon as it gets GSM signal.
Then I discovered that when it is connected to charger it will boot up normaly again and if I remove charger and try to send SMS or make call it will simply shuts down.
I am very dissapointed. I love Sony but this should not happening.

Replaced old battery with new one and all my problems gone

Related

[REVIEW] Samsung Note 2 Stand and Spare Battery Charger (3100mAh Battery Included)

I have bought this item: http://www.amazon.com/Samsung-Battery-Charger-3100mAh-Included/dp/B009M5J9HY/ref=sr_1_3?s=wireless&ie=UTF8&qid=1369030345&sr=1-3&keywords=note+2+charger
I am really disappointed with this. First, I thought the unit was defective, since I was completely unable to charge either my original battery or the one that came with the charger (battery EB595675LU, with Chinese writings added to the language list). I tried different cables and wall sockets and got nothing. The unit does have one LED light, but it never came on. Eventually, I noticed that it would actually work if I shoved the USB cable in really tight. I also learned that a 0.000001-inch move would disconnect the power, even if the cable was still physically connected to the charger. Keep in mind that this happened straight out of the box on the day it arrived. It was brand new.
After discovering that the charger could not be moved at all or it would not charge the battery, I was able to charge the battery that came with it (EB595675LU). It charged OK, but I felt it had less power than the original battery. It drained much faster than the original battery, even when I was home with Wifi on instead of LTE. I think that happened for one of two reasons: (1) the charger didn't completely charge the battery, or (2) the battery is indeed crappy/fake/less powerful than the original one.
At this point, I'm unhappy with the quality of the product. It's brand new and I already have to deal with the problem of the cable moving and disconnecting the power. If this charger is really from Samsung, this quality is unacceptable. That's terrible. But wait! There's more! I used the second battery until it died and tried to charge it in my phone. No problems there, but the charger completely died. Yes, died as in completely dead. And I've charged one single battery on this thing! Now nothing was working. Original battery, second battery, nothing. It just gave out on me. I looked at the battery contacts and noticed that one of them was not aligned with the other two. I touched the crooked one a little bit and it started working again, but still gave me the USB cable problem (disconnecting power). The crooked contact is still crooked as I didn't want to force it and risk breaking the damn thing.
I wanted to buy this charger and the extra battery because I'll be going on a trip soon and didn't want the extra weight and thickness of an extended battery. I chose to get a second standard battery and a separate charger, so I could just swap batteries on the go if needed. I really hope the unit I got is defective. I can't believe Samsung would put out such a crappy product and expect it to sell. I definitely don't want to be in the middle of nowhere on my trip and find out the stupid charger gave out on me at night and my second battery didn't charge. And what's worse is that just about every separate charger I found on eBay/Amazon has terrible reviews due to quality issues.
My goal is to have a reliable/trustworthy separate charger and a second standard battery. I'll be able to maintain my phone's thin profile, have enough power to take lots of pictures, and have no charge downtime other than overnight. Power banks and extended batteries wouldn't work for me in this case. I hope this review has been helpful.
I have the official Samsung battery & charger stand. Bought mine directly from Samsung using a 50% off code from registering the phone. Works as it should and can be moved around. Only cost 20 bucks, too(50% off)
Sounds like yours might be a knock off. Send it back & get a refund. If you need a 50% off code, pm me.

[Q] battery trick

hi, I'm having difficulties doing the battery trick with a particular nexus one phone. I have a second one, and it's not as hard to do with that second one. but my 'daily driver' is really driving me nuts, it can sometimes take over an hour to get the damn thing going, and it gets exponantially frustrating when flashing roms and having to do battery pulls because adb reboot won't work. Using different charges don't really help, but sometimes I get more lucky with a wall charger instead of a usb wire in a usb to wall charger
So, what triggers the battery bootup? is it a voltage boost? could I trigger it by sticking a second charger's stripped wires in the battery pins? I even have 2 extra batteries with the same voltage, if that can help anything!
What is a battery trick
Sent from my HTC One using Tapatalk
battery trick is to plug the charger in the usb port, then remove and reinsert the battery a few times because the power button is defective - a common problem with nexus ones
my profile is too new to post a youtube link
Not sure why its not working for you but you can get a replacement button for less then $15 and it takes less then 10 min to fix
Sent from my Nexus 4 using XDA Premium 4 mobile app
When I fixed mine about a year ago I just searched on eBay, it comes as the whole flex cable. I have fixed a lot of electronics over the years so I just took it apart and replaced it but I'm sure if you search there will be a disassembly guide somewhere. If you get stuck feel free to ask though
Sent from my Nexus 4 using XDA Premium 4 mobile app
Battery trick not working except in a certain house
I know this is an old thread but since I'm currently forced to use my nexus one (broken power button, repaired once under warranty, broke agai) as a temporary replacement, I've had to deal with the battery trick issue again.
I DON'T GET IT. Back when it was my main phone, the BATTERY TRICK worked fine, took a few times max. Now I have collated all the info I can find on how to do it (some of which is actually conflicting) and it WILL NOT WORK, except if I do it at my girlfriends house which MAKES NO SENSE.
IT IS NOT:
1.) The charger (various brands/both USB and wall socket)
2.) THe battery (authentic HTC battery)
3.) It doesn't work whether its fully charged (GREEN LIGHT) or charging up (ORANGE LIGHT)
4.) It doesnt work when I do it 20 times in a row with the "correct" timing (battery back in JUST as the light turns off), and not when I do it 20 times in the way which this video does it (waits for one orange flash before reinsertion)
https://www.youtube.com/watch?v=2O5adV-jj64&feature=relmfu
5.) Have tried removing sim and sd card, charging it for days, just EVERYTHING.
Sorry just venting as this just boggles my mind.
Anyone have any input on this age old issue? What's weirdest is that it used to work fine for me around 2012. And no, not buying the goddamn flex for 30 dollars, I have enough issues getting my One X+ diagnosed (been waiting 3-4 weeks on some incompetent repair shop).

[Not a post about battery life] What keeps killing my ACTUAL PHYSICAL battery?

So about 6 months ago I swapped the midframe and back on my N6 for the Moto X Pro ones. While I had the phone apart I replaced the battery. My original battery was still functioning fine but I figured since the phone's already torn down, why not replace it? My plan is to keep this phone until the 2016 Nexus is available. So I wanted to be sure that the phone would be problem-free until then.
I got the new battery off eBay from one of the many Chinese electronics retailers for around $15. It was sold as a Motorola OEM battery. When it arrived it looked identical to the original one out of my phone. Installed it, charged it up and went about my business. About 2 weeks later the phone e starts ****ting down suddenly. At first it would do it somewhere between 20%-30% on the battery meter. Then it progressed to shutting down at 50%-60%. Finally it would last only 10 minutes after taking it off the charger (at 100%) before shutting down suddenly. When it would do this, there wasn't the "shutting down" animation you would normally get from running out of juice. It would just go black.
So I deduced it was a junk battery and ordered another one. This time, I ordered one from a place here in the U.S. It was more expensive but not by much (around $30 I think). It arrives, I install it, works great for a month, then starts shutting down suddenly just like the eBay battery. It's at the "only lasts for 10 minutes off the charger" stage right now. So that's battery #2 that's suffered the same fate.
I have battery #3 on the way and it should arrive on Monday. Ordered from another U.S. retailer. Spoke to them on the phone and was assured that it's a brand new, OEM Motorola EZ30 battery. So we'll see how this one works.
At first I was sure I had just received a bum battery. But after the 2nd one had the exact same problem in such a short amount of time.e I can't help but wonder if it's something else causing the failure. 90% of the time I charge the phone via USB and the wall charger that came with the phone. The other 10% of the time it's charged via USB and my old GS4 wall charger. Would using a different charger cause battery failures? I had used the GS4 charger with the original battery that came with the phone and had no problems. Also, for a couple months, I had used a Cheotech 3-coil wireless charger. But I didn't like how long it took to charge so I quit using it. I used it for about 2 months on the original battery and the 2 weeks of the first replacement battery's short life. I haven't used it on the 2nd replacement battery at all as I was trying to see if that may have been the cause of the 1st failure. Can using a different charger damage the battery in such a short period of time?
Is there anything else I can look for before putting in battery #3? Like I said I'm hoping to keep checking this thing alive and kicking until this fall when the new Nexus is released.
Thanks.
Sent from my Nexus 6 using Tapatalk
buzzwyzr said:
So about 6 months ago I swapped the midframe and back on my N6 for the Moto X Pro ones. While I had the phone apart I replaced the battery. My original battery was still functioning fine but I figured since the phone's already torn down, why not replace it? My plan is to keep this phone until the 2016 Nexus is available. So I wanted to be sure that the phone would be problem-free until then.
I got the new battery off eBay from one of the many Chinese electronics retailers for around $15. It was sold as a Motorola OEM battery. When it arrived it looked identical to the original one out of my phone. Installed it, charged it up and went about my business. About 2 weeks later the phone e starts ****ting down suddenly. At first it would do it somewhere between 20%-30% on the battery meter. Then it progressed to shutting down at 50%-60%. Finally it would last only 10 minutes after taking it off the charger (at 100%) before shutting down suddenly. When it would do this, there wasn't the "shutting down" animation you would normally get from running out of juice. It would just go black.
So I deduced it was a junk battery and ordered another one. This time, I ordered one from a place here in the U.S. It was more expensive but not by much (around $30 I think). It arrives, I install it, works great for a month, then starts shutting down suddenly just like the eBay battery. It's at the "only lasts for 10 minutes off the charger" stage right now. So that's battery #2 that's suffered the same fate.
I have battery #3 on the way and it should arrive on Monday. Ordered from another U.S. retailer. Spoke to them on the phone and was assured that it's a brand new, OEM Motorola EZ30 battery. So we'll see how this one works.
At first I was sure I had just received a bum battery. But after the 2nd one had the exact same problem in such a short amount of time.e I can't help but wonder if it's something else causing the failure. 90% of the time I charge the phone via USB and the wall charger that came with the phone. The other 10% of the time it's charged via USB and my old GS4 wall charger. Would using a different charger cause battery failures? I had used the GS4 charger with the original battery that came with the phone and had no problems. Also, for a couple months, I had used a Cheotech 3-coil wireless charger. But I didn't like how long it took to charge so I quit using it. I used it for about 2 months on the original battery and the 2 weeks of the first replacement battery's short life. I haven't used it on the 2nd replacement battery at all as I was trying to see if that may have been the cause of the 1st failure. Can using a different charger damage the battery in such a short period of time?
Is there anything else I can look for before putting in battery #3? Like I said I'm hoping to keep checking this thing alive and kicking until this fall when the new Nexus is released.
Thanks.
Sent from my Nexus 6 using Tapatalk
Click to expand...
Click to collapse
Your batteries (#1 and #2) were not damaged by your usage pattern. They were bad quality period. And now you are paranoid about that. Those two batteries being bad does not surprise me at all because the inherent longevity of a battery is closely related to how well controlled the manufacturing process is, and we know how well that process is controlled for Chinese cheap batteries.
Modern batteries and chargers are built in a way that make them relatively immune to user abuse. Your battery lives for a certain number of charges and discharges. For a good battery from a reputable manufacturer that is around 500 to 1500 times. There is also a second order effect that if you recharge the battery before it completely dies it lives marginally longer. That is about it. The stuff you mentioned didn't cause your batteries to die. The poor manufacturing condition in a sweat shop in China did.
I think you also shouldn't use turbo charger with these batteries.
akholicc said:
I think you also shouldn't use turbo charger with these batteries.
Click to expand...
Click to collapse
The battery's microprocessor regulates the charge and is designed to prevent damage to the battery. Thus this statement is ridiculous. Especially since all turbo charge does is allow more energy to be transferred to the battery in a given unit of time than with a standard charge.
Strephon Alkhalikoi said:
The battery's microprocessor regulates the charge and is designed to prevent damage to the battery. Thus this statement is ridiculous. Especially since all turbo charge does is allow more energy to be transferred to the battery in a given unit of time than with a standard charge.
Click to expand...
Click to collapse
okay. Its my bad then. But i always notice that my phone heats up more when i use turbo charger. And heat is never good for these batteries.
The amount of heat generated on charging does not significantly impact battery life when compared to something like doing a deep discharge. I wouldn't worry too much about the heat. The battery can handle it.
Strephon Alkhalikoi said:
The amount of heat generated on charging does not significantly impact battery life when compared to something like doing a deep discharge. I wouldn't worry too much about the heat. The battery can handle it.
Click to expand...
Click to collapse
I see thanks for clearing things up. I saw those videos and images of nexus 6 with all those popped batteries and back covers. I have been afraid of its heating up since then. So i can use it without worrying about its battery and back cover?
I've had my Nexus 6 since the beginning of the year and have had no problems with it whatsoever. While there is no guarantee you won't encounter a problem, if your Nexus is relatively recent like mine you shouldn't have any issues.

New battery, original or fake?

Hi,
Yesterday i buy new battery for my old lg g2, but i'm not sure is it original.
My New battery is non stepped like this http://tanstartrade.ca/images/LG%20BL-T7.jpg
Do you think that it could be authentic?
Thanks in advance for your help.
I just got replaced battery in service - they told me that they use original LG parts. When I checked it under the cover, it shows manufactured date 6th of January 2016. It is not allowed by antena strips and curved back cover to have thicker battery and thinner would have less capacity. You could probably try but I don't see any benefits in that.
EDIT: After few days of usage I had to get my battery replaced by the old one. May be bad luck with not properly working battery but more probably faik one (runs for 0-10 mins, weird force charging in no OS mode). When they showed me the "new" battery in service it is thinner than the original, does not have the stepped back and thus makes gap between back cover and battery itself - 2mm of medium hard press. So it was like yours - flat design - no additional stepped part. The service was not authorised service but looked legit and had plenty of good reviews. So it's my experience of flat lg battery replacement stated as original.
Be noticed that all of below information are not yet confirmed.
I discovered the difference between original and fake since searching trough forums and own experience. :victory:
Design od LG BL-T7 battery has not changed ever since. Still the only one with the stepped back side. Should look like the battery on right side of these pictures, otherwise it is nor factory replacement (aka fake):
http://i.imgur.com/2Yt8cvDh.jpg
http://i.imgur.com/hkVpceYh.jpg
http://i.imgur.com/XtEH5AQh.jpg
The main difference is in litle bulk under printing "BL-T7", arrows under the NOM icon and next right is noticeable differnce in T in that symbol, fonts differ and last letter of chineese behind the manufactured day,...
There is a believe that non-original batteries are not that bad at all, only they have poor wiring and connection port which often makes them behave unexpectedly.
How to calibrate battery after replacement or when needed here.
I replaced my battery recently, they told me that it's not the original one, its a Chinese made but works well. So far, no issue.
Where did you get that one?
iubjaved said:
I replaced my battery recently, they told me that it's not the original one, its a Chinese made but works well. So far, no issue.
Click to expand...
Click to collapse
tiguy99 said:
Where did you get that one?
Click to expand...
Click to collapse
From Ebay. Bought it from a trusted seller.
Sorry for the late reply, i wasn't around for long.
Thanks. When possible, please pm me the sellers info.
Gonna buy one asap
iubjaved said:
From Ebay. Bought it from a trusted seller.
Sorry for the late reply, i wasn't around for long.
Click to expand...
Click to collapse
tiguy99 said:
Thanks. When possible, please pm me the sellers info.
Gonna buy one asap
Click to expand...
Click to collapse
http://www.ebay.com/itm/NEW-OEM-LG-...781964?hash=item51cfceb70c:g:oOEAAOSwv0tVNo12
Note that if you face any issue regarding charging since these batteries are years old, then feel free to contact the seller and you will get a replacement.
I bought that same battery. It had no glue residue and the year was rubbed off.
It looks genuine but I won't be able to tell until my replacement screen arrives and I can install them both at the same time.
I bought a 3950mah high capacity battery from aliexpress (so clearly not geniune but for the money I decided to give it a shot). it works fine, got my Screen on time from 2-3h to 5h or more. However, when charging, it will charge up to 95-99% and then, while still plugged in, go down to 83% and stay there. Then when I unplug it and start using it, it first goes back up to 90-95% before going back down like normal. Has anyone experienced something like this and/or know a way to fix it? I tried some battery calibration methods but no luck. Also, since the phone rarely reaches 100% (indicated) it doesnt always reset the screen on timer properly... this makes it difficult to keep accurate track of its performance. when it does work 5h seems to be the usual value.
That one sounds weird.
Definitely not normal.
Only solution is to buy another and test it or return the one you haveDefinitely and try another one
kili3981 said:
I bought a 3950mah high capacity battery from aliexpress (so clearly not geniune but for the money I decided to give it a shot). it works fine, got my Screen on time from 2-3h to 5h or more. However, when charging, it will charge up to 95-99% and then, while still plugged in, go down to 83% and stay there. Then when I unplug it and start using it, it first goes back up to 90-95% before going back down like normal. Has anyone experienced something like this and/or know a way to fix it? I tried some battery calibration methods but no luck. Also, since the phone rarely reaches 100% (indicated) it doesnt always reset the screen on timer properly... this makes it difficult to keep accurate track of its performance. when it does work 5h seems to be the usual value.
Click to expand...
Click to collapse
tiguy99 said:
That one sounds weird.
Definitely not normal.
Only solution is to buy another and test it or return the one you haveDefinitely and try another one
Click to expand...
Click to collapse
I have contacted the seller but so far they are not replying... I tried the Ampere and 3C Battery monitor the check the voltages and currents while charging. At first, I thought the phone showed the wrong percentage as it was not calibrated for the high capacity (so 80% was actually 120% relative to the standard battery capacity) but it showed that the phone was actually discharging once it reached full charge. Also, my assumption of it being 120% was wrong since the percentage probably comes from the cell voltage. So, next I checked the cell voltage using both ampere and 3C but the values were all over the place, jumping from 4.36 to 4.2 and back. this made no sense. The battery has a top voltage of 4.37 when fully charged so maybe the battery monitoring software of the phone is confused by this?
In any case I will wait for the seller to get back to me and if the problem becomes worse I will get a new battery to test out.
Thanks for the update.
Keep us posted on how it goes.
kili3981 said:
I have contacted the seller but so far they are not replying... I tried the Ampere and 3C Battery monitor the check the voltages and currents while charging. At first, I thought the phone showed the wrong percentage as it was not calibrated for the high capacity (so 80% was actually 120% relative to the standard battery capacity) but it showed that the phone was actually discharging once it reached full charge. Also, my assumption of it being 120% was wrong since the percentage probably comes from the cell voltage. So, next I checked the cell voltage using both ampere and 3C but the values were all over the place, jumping from 4.36 to 4.2 and back. this made no sense. The battery has a top voltage of 4.37 when fully charged so maybe the battery monitoring software of the phone is confused by this?
In any case I will wait for the seller to get back to me and if the problem becomes worse I will get a new battery to test out.
Click to expand...
Click to collapse
Hello guys, I am looking to buy new battery for my 2 and half years old g2. So here are my options:
1) Pollarcell - they says it's great battery, but still kinda expensive for a non-oem battery. It would cost me about 25e.
2) OEM LG battery - in LG official service, I have to check it they still got them, price was about 30e if I recall correctly.
3) Some random battery - I guess this is lottery.I can get good or I can get bad battery. There are many brands, and their price is from 8-9 to 15e.
OEM is best choice for sure, but I don't feel like investing 1/3 of phone price in battery, especially cause I don't know how long I will keep that phone. Dunno what to do
Edit: Did anyone tried this battery? It has quite high rating
https://m.aliexpress.com/s/item/32572840069.html#autostay
Beware of Pollarcell batteries I have read cases of burning
Bought my new battery at PhonTrading24 ,
Battery is class and from new production 12/2016 .
fake or original?
I also changed my battery after 3 years at LG service however I have some questions in my mind whether battery is fake or original one. Although new battery has same capacity like old one but it doesn not last like new one ( it lasts almost a day ) Pictures are attached new and old one. What do you think guys?
benveq said:
I also changed my battery after 3 years at LG service however I have some questions in my mind whether battery is fake or original one. Although new battery has same capacity like old one but it doesn not last like new one ( it lasts almost a day ) Pictures are attached new and old one. What do you think guys?
Click to expand...
Click to collapse
It looks like the original one and it might well be. But that also means it is not new, as the production of original batteries have stopped several years back. So what you have is probably an unused but ageing battery.
Batteries start degrading the moment they are produced, just that it degrades at a slower rate being unused (depending on temperature it's stored etc), compared to it being actively used everyday.
keyzjh said:
It looks like the original one and it might well be. But that also means it is not new, as the production of original batteries have stopped several years back. So what you have is probably an unused but ageing battery.
Batteries start degrading the moment they are produced, just that it degrades at a slower rate being unused (depending on temperature it's stored etc), compared to it being actively used everyday.
Click to expand...
Click to collapse
thanks a lot for the comment. I have been using this battery for a month now and the battery ends after completing one day. As and old production not bad as you said.
Dimensions of original battery BL-T7, taken off from LG G2 : 55.4mm x 66.4 mm x 5.6 mm (thickness in the middle), Weight: 45 G.

Replaced my Tab S battery/USB port but still not starting/charging

Hey everyone,
I recently replaced the battery and USB port in my Tab S 10.5 because it wasn't charging properly and the battery eventually died on me. The battery was sitting around for about 1.5 years before I got around to installing it and I believe it was second hand. After replacing the battery/USB port I realised it still wasn't charging so I tested the battery voltage and realised it's 2.81v when it should be 4.2v on both cells when charged (it's a 3.8v battery).
Does anyone know what is the likely problem? I don't know if 2.8 volts is too low or if that's just normal discharge voltage. I need to know if it's worth me buying a new battery or not because obviously I don't want to spend the money on another battery if the problem is something else. Is there any way of troubleshooting whether the battery is the problem or not? What other problems could cause a device to just not start entirely? I know the charging port could be another issue but that's why I replaced it, the replacement was second hand though (despite being advertised as new). Nothing bad has happened to the tablet, I've never dropped it or got it wet for example.
Sorry if this is the wrong place to discuss hardware like batteries but I couldn't find any other place to discuss something like this.
Thanks for any help,
quantumboner said:
Hey everyone,
I recently replaced the battery and USB port in my Tab S 10.5 because it wasn't charging properly and the battery eventually died on me. The battery was sitting around for about 1.5 years before I got around to installing it and I believe it was second hand. After replacing the battery/USB port I realised it still wasn't charging so I tested the battery voltage and realised it's 2.81v when it should be 4.2v on both cells when charged (it's a 3.8v battery).
Does anyone know what is the likely problem? I don't know if 2.8 volts is too low or if that's just normal discharge voltage. I need to know if it's worth me buying a new battery or not because obviously I don't want to spend the money on another battery if the problem is something else. Is there any way of troubleshooting whether the battery is the problem or not? What other problems could cause a device to just not start entirely? I know the charging port could be another issue but that's why I replaced it, the replacement was second hand though (despite being advertised as new). Nothing bad has happened to the tablet, I've never dropped it or got it wet for example.
Sorry if this is the wrong place to discuss hardware like batteries but I couldn't find any other place to discuss something like this.
Thanks for any help,
Click to expand...
Click to collapse
Hello,
Please check the soldering join of the battery socket on the PCB. You may need to use a magnifier or similar tools to get a good look. The solder joins seem to be pretty weak and could be damaged when you replaced the battery. Socket pins on the plastic plug came with those Chinese replacement battery has high insertion force. They make good contact with the pin on the plastic PCB receptacle but could exert excessive force on the PCB join during engaging or removal. It is feasible to repair it if you have suitable soldering tip (chisel type is better) and good eyes. Space is limited due to the RF shielding cage right besides the join. Try going in from the top near vertical way. If available, try working with a microscope.
I went through more or less the same thing you had. First replacing the battery, and port, But performance was strange. Sometimes it charges well to 100% But once in a while it stops in the middle. When the capacity went below 60%, tablet could reset under heavy use. Sometimes it drops from 40% to 15% in less than 15 minutes. It got worse and worse. After installing 3C Battery Manager, I found out there was sudden and severe voltage drop and temperature spike when resetting happens. At the beginning I suspected battery issues as we all know getting those replacement battery is like a gamble. I got another battery from a different vendor and similar thing happened. After fixing the soldering joins, it works really well now and I can enjoy a few days on light use without charging.
Also, some of those replacement batteries are picky on charger. Most likely due to the "innovative" cost-cutting protection circuit design. Some fast charger use a very low charging current and takes very long time to get to 100%.
Good luck !
If it's a multilayered PCB be very careful soldering it. You need to know how to solder well. Excessive/prolonged heating and poor desoldering technique can destroy them.
Replace the battery and go from there. It may have auto shutdown from low cell voltage, if so it's not worth mucking with.
If that doesn't get it's probably a mobo failure of some type.
Hey guys thanks for your replies. Sorry that I forgot about this after I didn't get any replies or I would of updated it. I did manage to get it sorted, the problem was the charger I was using, it wasn't providing enough current so the battery refused to charge at all. It would only charge when plugged into the mains on a decent adapter.

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