One solution for strange battery behavior - Epic 4G Q&A, Help & Troubleshooting

We have three Epic 4G phones in my family. Two of them would exhibit strange battery behavior where the battery % would drop by 20-30% suddenly, and in one case, refused to charge even though the indicator said it was at 100% while it was plugged into the charger (or USB). (I'd unplug it and it would drop instantly to some random low %.)
After experimenting with ROMs and kernels, none of which provided a permanent solution, I finally discovered the problem.
Loose battery.
The batteries in some Epic 4G phones simply don't fit snugly enough to work properly. I selected a bit of thin cardboard and folded it around the bottom and back of the battery to hold it snugly in place (add another thin piece if it helps the fill in the space between the battery and back of the phone). Now the batteries in the two erratically functioning phones work normally.
Cardboard may not be the best material for doing this, but if cardboard works for you, I'm sure you can find a better substitute if you've established this is the cause of your battery problem.

Related

HTC Hero battery bulging

I have a HTC Hero, and noticed recently the cover seems to be almost popping off a little bit by the volume rocker, I thought I maybe broke a clip taking it off/putting it on a lot (I tend to do it a lot while I'm bored lol)
I noticed today however when I push it on, it comes back off. I took the cover off, and the battery seems to be almost popping out. I push it in, and it pops out a bit more. I held it in front of me and each side isn't straight, one is raised maybe a millimetre in the middle
Is this still safe to use, and is it covered by a warranty?
I would not use it. Batteries are actually fairly dangerous because of the lithium parts. They can, in rare cases, catch fire. I don't know why a battery would bulge out, but I can't imagine it being any good.
I'd try to look for warranty. If you don't have warranty (I'm not sure if it's covered) you can buy a new one from DealExtreme for a mere 5 USD, shipped free. But those batteries are fairly low quality, so using them is not actually recommended.
It might be an idea to buy a new one off eBay, or email htc about your problem.
Nothing to worry about the battery is overused/overcharged that is it won't funvction properly any more and it might cause damage to your phone...best suggetsion is to buy another battery
I had this issue with my HTC Glacier. I was swapping ROMs on my phone without having a fully charged battery and I believed that messed with the phone's abilty to detect the charge level. I ended up overcharging the battery without realizing it and it developed a bulge. I had to get a new battery because the phone would eventually crash even with a full charge and then reboot showing 0% battery.

[Q] Is it the Battery or is it something else?

Hi there.
My Mother has a One V which she is really happy about. But recently she says that it has been draining the battery so fast. At first i didnt really believe it (you know old people and tech), and asked if she had charged it correctly. She then told me that the charging process was also quite strange.. She had plugged it in one night, and the phone displayed that it was charging.. Then 8 hours after, in the morning it had only charged 2% ! This doesnt happen all the time, but only some times.
Now she has given it to me and hope that i can fix it. At first im just going to factory reset it, even though i dont think that is the problem. But i have noticed that what she is telling me is true to some extend. I have had the phone sitting on the table all night. No simcard and no nothing.. It had only used about 5%, but as soon as i began using it, to take backup and prepare for the reset oh boy.. It uses 1% in merely seconds! Approx 26 seconds per 1%!
I think this is rather strange and im unsure if the battery is the problem.. Do you guys have any ideas ?
Oh and i have to say that the phone is running newest stock software. It has never been rooted or anything like that.
Well, the charger port is probably bad. My first htc one m8 and my droid incredible 2 both have weak ports on them from the factory. Send it in for warranty and say nothing < about a possible bad charging port if it still has warranty. And, if nothing Less try a brand new charger, and see if that one works and if it's loose when it's plugged in. If it Is loose with new charger it's a bad charger port.
Yeah this confuses me as well. It happens once every few months. The battery drains really fast and charging is extremely slow. The first time this happened my One V dropped from 100% to 27% in 20 minutes! And just like it randomly happens it randomly goes; battery consumption goes back to normal after a day or two.
A possible reason is the charger and USB cable that is used. My cable is worn out so that might be why charging is slow but it doesn't explain why the battery drains so fast even when the phone is disconnected from the charger. So the only reasonable explanation would be some hardware problems in the battery pack.
But this is all just me guessing... I don't know for sure.
tylerleo said:
Well, the charger port is probably bad. My first htc one m8 and my droid incredible 2 both have weak ports on them from the factory. Send it in for warranty and say nothing < about a possible bad charging port if it still has warranty. And, if nothing Less try a brand new charger, and see if that one works and if it's loose when it's plugged in. If it Is loose with new charger it's a bad charger port.
Click to expand...
Click to collapse
It could be the charger port. I tried cleansing it with a toothpick (heard dust could be the problem), but the problem persists
swhatevers said:
Yeah this confuses me as well. It happens once every few months. The battery drains really fast and charging is extremely slow. The first time this happened my One V dropped from 100% to 27% in 20 minutes! And just like it randomly happens it randomly goes; battery consumption goes back to normal after a day or two.
A possible reason is the charger and USB cable that is used. My cable is worn out so that might be why charging is slow but it doesn't explain why the battery drains so fast even when the phone is disconnected from the charger. So the only reasonable explanation would be some hardware problems in the battery pack.
But this is all just me guessing... I don't know for sure.
Click to expand...
Click to collapse
The problem here is that it happens every second time or so the phone is charged at the moment. But i have bought a new battery and will try and change it. Ill write here how it goes and if there is a improvement, so that you know where the problem relies if you are thinking about doing the same.
Same problem here. Every few months the battery drops from > 50% to 2% or so. This happens within some minutes and my phone gets really hot.
But normaly I use it with a 2 amp charger and I think this happens more often if I use chargers with 1 amp.
Edit: This happened for me with every rom I used.
I changed the battery two days ago, and i can already feel a huge improvement.. 8 hours ago i took it out from the charger. Data and Bluetooth has been on all day. Been browsing a little, and sent som SMS and stuff like that.. 65% now.
The conclusion must be that in my case at least, it was a battery hardware fault.
I'm also thinking about replacing my battery, was replacing it easy?
jonas2790 said:
I'm also thinking about replacing my battery, was replacing it easy?
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Click to collapse
Yes it was actually pretty easy. Although i have done it on my One S too, and that was even easier.
Some recommendations: Get your self a repair tool kit before you start. Everything has been so much easier for me after i got that. It is all the money worth it . This is what i got http://www.ebay.co.uk/itm/261399617620?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT <- They ship worldwide.
The battery i brought : http://www.ebay.co.uk/itm/321303229844?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
First i took the plate off at the bottom of the phone (the one where there behind is sim card and sd card). Unscrewed all six screws. Once done you can take all the plastic off the large plastic part (the one below the simcard and sd card when inserted, and covering everything behind the outer cover). This part is also taped/glued, but should not be a problem to get off.
After you have taken that off, use a pry tool to pry the plate open around the camera lens and flash (beware that this plate is also taped together. Unscrew the last screw behind.
Now comes the tricky part. You need another more solid pry tool to pry the lcd/board out from the front. Use the pry tool in between the screen and the cover of the phone, and all the way around. The LCD and board needs to come out from the phones front.
After that the battery becomes visible. There is nothing special to getting the plug out for it as far as i can remember and should just be pulled towards the battery to get it out. Battery is glue to the inside of the phone, but using the solid pry tool you should be able to get it out. If you order the battery i linked to, it comes with new 3M tape.
Heres a video showing it pretty good i think:
https://www.youtube.com/watch?v=gPasbSobzwA
Da9L said:
Yes it was actually pretty easy. Although i have done it on my One S too, and that was even easier.
Some recommendations: Get your self a repair tool kit before you start. Everything has been so much easier for me after i got that. It is all the money worth it . This is what i got http://www.ebay.co.uk/itm/261399617620?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT <- They ship worldwide.
The battery i brought : http://www.ebay.co.uk/itm/321303229844?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
First i took the plate off at the bottom of the phone (the one where there behind is sim card and sd card). Unscrewed all six screws. Once done you can take all the plastic off the large plastic part (the one below the simcard and sd card when inserted, and covering everything behind the outer cover). This part is also taped/glued, but should not be a problem to get off.
After you have taken that off, use a pry tool to pry the plate open around the camera lens and flash (beware that this plate is also taped together. Unscrew the last screw behind.
Now comes the tricky part. You need another more solid pry tool to pry the lcd/board out from the front. Use the pry tool in between the screen and the cover of the phone, and all the way around. The LCD and board needs to come out from the phones front.
After that the battery becomes visible. There is nothing special to getting the plug out for it as far as i can remember and should just be pulled towards the battery to get it out. Battery is glue to the inside of the phone, but using the solid pry tool you should be able to get it out. If you order the battery i linked to, it comes with new 3M tape.
Heres a video showing it pretty good i think:
https://www.youtube.com/watch?v=gPasbSobzwA
Click to expand...
Click to collapse
Aah so it was the battery pack after all!! Interesting to know.
Glad it worked out for you and thanks for the battery replacement links.
My One V is retired but since the battery is cheap I will buy one and replace it just in case I ever need the phone as backup.

removeable battery

just curious can note 7 avoid this catastrophe if the battery was removeable ,what are your views ?
Since we don't know what the cause was, my opinion is I don't know (well, I read something I haven't seen anywhere on the boards or any other news source but one but I won't state it because I have been accused of reading the news, it is in a language most won't understand anyway). But I am confident they should be able to fix the issue. I would largely prefer them to keep the IP68 rating.
You asked for some views so here are mine, much to the chagrin of many I'm sure but that's ok, that's just fine, really.
Based on currently available information which includes how Li-Ion batteries actually work, I personally would say the actual reason(s) that the Note 7 devices are considered to be defective is not because of the battery itself. So, while having a removable battery is a great thing - and I prefer devices that have removable batteries personally and only buy such devices with my own cash (I got my GS7A as a trade for a laptop so it didn't cost me any cash out of pocket).
Try this hypothetical situation for just a moment, if you will.
Without naming name brands or particular models, say you have a smartphone that has a removable back cover and a removable battery inside. To get to that battery and remove it you must handle the device well enough to be able to get at the back cover, probably find the tiny little gap that most have so you can insert a fingernail into it or perhaps a nail file, a butter knife, anything at all that can fit in that little gap so you can then start to lift the back cover off the device, unsnapping the retainer clips as you do so.
Follow me so far?
After the back cover is fully removed from the device you then have to remove the actual battery itself. Most removable batteries have a spot where you can "hook" a fingernail into and then pull gently to pry the battery up and out of the frame of the phone itself. If necessary you can probably turn the smartphone display side up and then smack the phone into your palm and the battery would probably drop out into hand, but generally most people just use their fingernail or perhaps a spudger to pry the battery loose from the device.
Voila, you've removed the battery entirely, congratulations.
Now here's where it gets interesting:
Say this smartphone has a defect that is occurring at random times on some devices - some of them will exhibit the defect (as cause and effect) and some devices may never exhibit it because of the random nature of how it presents itself. Considering this random nature of the defect presenting itself, say that at some point either while you are actually using your smartphone in your hand, or it's in your pocket, or it's mounted to your dash in your car with a holder, or it's sitting on a desk or table, or anywhere at all really and...
It starts smoking.
I mean it literally starts smoking and the smoke is quiet visible and you can see it easily. You can even smell it as it's happening. If the phone is in your hand when it starts smoking your most common reaction will be to drop the device right then and there, especially if in addition to the smoke you feel some heat buildup, like it was somewhat cool a few seconds ago but now it's smoking and it's getting damned hot, fast.
Again, most people in that situation are going to drop the device immediately.
But your device has a removable battery under the removable back cover, right? So...
If you dropped the device because it was smoking and getting hot there's a chance, a small chance but a chance nonetheless, that in the act of dropping your device when it hits the ground or it lands on a desktop or table top it might just cause the back cover to pop off and the battery might just pop out of the device entirely. That's a possible thing, right, you can actually imagine that dropping a smartphone with a removable back cover and removable battery might just make the back cover pop off and the battery pop out.
Still following me? Good but here's my point.
If you have a smartphone and it starts smoking, anywhere - be it in your hand, pocket, dash holder, tripod holder for pictures, on a flat surface, in a pool, under water, in a toilet, desktop, table, gravel, dirt, sand, on a road, it doesn't matter - the primary way to get the battery out of that device means you have to remove the back cover and then remove the battery and that requires you to hold it but since it's smoking and getting hotter by the second that's not really an option anymore.
So what then? Does that mean having a removable battery is a bad thing? Well, no, not really, but in a situation where the device fails in some manner and causes - that's the important thing here, the cause - the battery to fail as well and burn itself up it means you could potentially suffer some injury yourself because you have to manually remove the back cover then the battery.
tl;dr Yes it's a good thing to have a removable battery, but if a device with a removable battery fails and you want to remove the battery during the failure hoping to save the device itself from further damage, you might be injured yourself because you have to handle the device to some degree to get that failing battery out before it does damage the device or in the most extreme situation explode which destroys the device and also might release the gases from the battery which are incredibly toxic to humans.
I'm just speculating here.
My answer is: Maybe.
If I read is correct and the fault lies with the design flaw more than a battery defect, having removable battery would mean losing water resistance and the curve design, and maybe not apply too much pressure on to the physical battery itself.
What I do know is, if we had removable battery, Samsung would have avoided a full on major recall and just exchange the battery. If size is a problem, maybe a smaller capacity in exchange for safety. And maybe a small refund or a token of gesture to make up for the smaller capacity.
Oh well. What a waste.
Aimara said:
just curious can note 7 avoid this catastrophe if the battery was removeable ,what are your views ?
Click to expand...
Click to collapse
IF the battery is-was the problem then your question has an obvious answer. WE don't know yet what the problem is so no one can yet say.
Its yet more of these threads with yet more speculation over a done and dusted deal.
Ryland
I do agree with broadband. Even with removable batteries, if the batteries were damage, I wont be fast enough to remove it to prevent total loss.
But yah, it will drastically affect the recall process. Recall batteries are still better than the whole phone. And there will be plentybof after market alternatives to tide over temporarily
One of the reason is also easy troubleshooting , but a faulty set is needed to test the theory, example a faulty note 7 came with a removable battery, reports states that it will get extremely hot before smoking up, sure many of you who own Samsung older version of phones, changing battery is quite fast if the techniques is right, ok just a example, if the first one is a sdi battery as claimed, went faulty, threw it off before smoking up.
Went to claim from Samsung, which is ampere battery(forgot the name), if it didn't does a thermal? What's the deduction then?
If the second battery did smoke up, high chance its the phone issue? Of course this is just a theory, with all the reported note 7 smoking up and burned like crisp, it's quite hard to csi it.
Based on my observations, it seems like the replacement units are more prone to blowing up than the original. Even with the ATL batteries.

Oneplus 3 shuts down when dropped no more than an inch

I recently changed the battery for my 5-year-old OP3 with an OEM version. The OEM battery was marginally smaller than the original battery, leaving a tiny gap at the bottom in the phone's battery cavity. It worked fine for a few weeks, then I noticed it would have random shutdowns with the slightest of drops. I tried to fix the problem by (1) putting adhesive tape on the battery so that it wouldn't move; (2) filled the gap at the bottom with a roll of electrical tape to further stop any possible movement.; (3) taped the battery connector so that it wouldn't be dislodged from the socket.
None of these worked. You can see from this video how the phone will shut off with the slightest of drops:
https://imgur.com/a/ach7OCZ
It seems more likely to shut off when the mild impact is on the left side of the phone.
Tired of having to handle my phone like it was an egg, I reinstalled the original battery and the problems were gone. But now I'm left with a fast-draining battery that will only get worse.
Any idea what else I can do?
I can't find the original battery, and this was actually my second OEM battery purchase (the first was marginally too big to fit into the cavity), so I'm hesitant to try buying another one.
dltk said:
I recently changed the battery for my 5-year-old OP3 with an OEM version. The OEM battery was marginally smaller than the original battery, leaving a tiny gap at the bottom in the phone's battery cavity. It worked fine for a few weeks, then I noticed it would have random shutdowns with the slightest of drops. I tried to fix the problem by (1) putting adhesive tape on the battery so that it wouldn't move; (2) filled the gap at the bottom with a roll of electrical tape to further stop any possible movement.; (3) taped the battery connector so that it wouldn't be dislodged from the socket.
None of these worked. You can see from this video how the phone will shut off with the slightest of drops:
https://imgur.com/a/ach7OCZ
It seems more likely to shut off when the mild impact is on the left side of the phone.
Tired of having to handle my phone like it was an egg, I reinstalled the original battery and the problems were gone. But now I'm left with a fast-draining battery that will only get worse.
Any idea what else I can do?
I can't find the original battery, and this was actually my second OEM battery purchase (the first was marginally too big to fit into the cavity), so I'm hesitant to try buying another one.
Click to expand...
Click to collapse
Don't you have OnePlus service centres? The original battery should be available with them. I replaced mine from the service centre with no issues.
Anything bought outside is a hit or miss.
TNSMANI said:
Don't you have OnePlus service centres? The original battery should be available with them. I replaced mine from the service centre with no issues.
Anything bought outside is a hit or miss.
Click to expand...
Click to collapse
The ones where I'm located don't have batteries for anything prior to OP6
dltk said:
The ones where I'm located don't have batteries for anything prior to OP6
Click to expand...
Click to collapse
Buy a op3 battery from ifixit. The batteries are on par with manufactuer. The shutting off issue is caused by a loose plug from the battery.

Question Z Fold 3 'Too Cold To Charge' after water damage

Okay, hello XDA Forums peoples! Ive been lurking here for like a decade. I feel bad for bothering you nice people, but now I'm at my wits end with this phone.
Okay, so, long story short:
Z Fold 3, let it run the One U.I. 4 update, bricked the whole phone, wouldnt come back on. This happens a week away from being out of warranty. So i get samsung to agree to let Asurion/uBreakiFix repair it (I almost always fix my own electronics, I hate Asurion, I've had problems dealing with them before, but its free so whatever). Well they get it working, i asked what they did and they were basically like 'uhhh idk'. I assume it was just an 'unplug the battery and plug it back in' kind of thing.
Anyways fast forward to a couple months ago. Im walking along the creek, i always keep my phone in my backpack for safety. Zipper on my backpack comes open some, phone falls out and directly into the water for about 3-5 seconds. Goes black within 15 minutes. Alright, so it seems like maybe the boys who worked on this didnt seal it back properly. Whatever.
I let it dry for about 4 or 5 days. Comes back on, everything works except the front screen's digitizer(which is cool for me, because the inside screen still works fine) and its reporting too cold to charge, so now once the battery runs out i have a new foldable brick! Yay! I check the battery temperature thats reported in settings and its completely fine. I hit it with a hair dryer for like 5 minutes to try and trip the thermometer, and nothing happens.
I tried some cheap shots in the dark, i replace the USB charging board, i replace the wireless charging coil, both of which have thermistors on other older samsung phones, so i figured it was a decent guess. Still too cold to charge.
So I find a schematic, or not exactly a schematic, but like a boardview, i guess. So at least i know where the thermistors are to check them. Theres about 10 thermistors on the main and sub boards. 5 of which are covered by metal shielding which i am just terrified of trying to remove, mainly because i havent done it before. So i check the other half.
The thermistors used in these phones are like inverse, so they have less resistance for higher temps and more resistance for lower temps. If one of them is dead, it will have like "maximum resistance", right? Which would report the coldest possible temperature, right? So that all makes sense, to me at least.
The 5 i can get to with my meter to check, they seem to work completely fine. From what research ive done they seem to be like 100k resistors when measured at ~70 degrees f, and i can watch the resistance go up and down when its cooled or heated past that temperature. Okay, perfect. That all checks out.
Because the other ones are under some metal shielding, i assume theyre most likely fine because any water would have a harder time getting in there. So i skip to the most expensive option so far: i buy two replacement batteries. The schematics do not include the battery, so i dont know where the thermistors are on my current batteries to check them, if that was the problem.
Well, batteries came yesterday, i pop them in, still too cold to charge. I've already ran the phone dead checking it, so i cant do any further diagnostics with the phone on. And now the most i get is a Yield sign with a thermometer in it when i plug it in.
Okay, so... Idk?? This problem is starting to get over my head. What do y'all think? It seems like my options are becoming more limited and expensive.
I can try and put a big blob of solder on the top of the shielding and pull it off to check the remaining thermistors, which seems to be how people remove those things. I also have have hot air at my disposal, which is always risky with tiny things because too high airspeed might blow components away on the board and then i'll probably cry.
It could just be a connector somewhere on some flex cable? Maybe? I mean like maybe what if one of them is for reporting temperature, and water corrosion is stopping it from sending a signal through???
Im fine with doing whatever, but i just want a charged battery first so i can recover my data before i do anything that drastic. I mean, back in the day they had 4 big pads on a removable battery. You could buy a universal samsung battery charger or rig a USB cable to charge it, but I have literally no idea what to do here. Does anyone know of some specialized battery charger that will connect to these flex cables?? That would be a gigantic help right now. Or if i knew where to get a Z Fold 3 just to pop it open and charge my battery with? Or maybe just sit there for 2 hours holding two wires to the positive and negative pins?!??!?? I dont know. Someone throw ideas at me, please!
Might be worth buying a bench power supply and either injecting voltage through the phone or connecting it to the cells to trickle charge them back up? Im not an expert it these just throwing ideas

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