[Q] Samsung Tab 7.7 - Battery Life & Warnings - Galaxy Tab 7.7 General

Hi there, I purchased my 7.7 Tab 3 weeks ago. Loved it as expected. I've got few concerns about the battery though. Hope someone can share solutions / experiences with me.
The battery life isn't so impressive as I heard about from reviews and all. It lasts hardly 48 hours after a full charging with no real use for more than 30 minutesx2 times within less than 48 hours. However, it was connected to WiFi all the time and was syncing as well (but on standby all the time). Now another bugging problem is that when I plug the charger after the battery having completely drained and the device is turned off by itself (before completing 48 hours), the screen shows a warning logo first instead of the charging icon. The warning logo has warning sign and the icon of a drained battery with a red color at the bottom of it. I do not know what does that mean. I just know that when that appears, the device is not charging at all. I have unplugged and plugged it back 3 times to get it charging again. So far, it happened two times and I am sure it will happen again but I just want to know whether this is the sign of an unhealthy battery or any other parts of the device? This happened to anyone else? Your feedback is welcome and well appreciated.

Install SetCPU. :good:

kable said:
Install SetCPU. :good:
Click to expand...
Click to collapse
How setCPU solve that problem?
Sent from my GT-P6800 using Tapatalk 2

terraccan said:
Hi there, I purchased my 7.7 Tab 3 weeks ago. Loved it as expected. I've got few concerns about the battery though. Hope someone can share solutions / experiences with me.
The battery life isn't so impressive as I heard about from reviews and all. It lasts hardly 48 hours after a full charging with no real use for more than 30 minutesx2 times within less than 48 hours. However, it was connected to WiFi all the time and was syncing as well (but on standby all the time). Now another bugging problem is that when I plug the charger after the battery having completely drained and the device is turned off by itself (before completing 48 hours), the screen shows a warning logo first instead of the charging icon. The warning logo has warning sign and the icon of a drained battery with a red color at the bottom of it. I do not know what does that mean. I just know that when that appears, the device is not charging at all. I have unplugged and plugged it back 3 times to get it charging again. So far, it happened two times and I am sure it will happen again but I just want to know whether this is the sign of an unhealthy battery or any other parts of the device? This happened to anyone else? Your feedback is welcome and well appreciated.
Click to expand...
Click to collapse
sometimes... the cable is the culprit... a damage cable will gave the same error... btw.. it is not advisable to really drain the battery dry before charge it... but that just my opinion... just try to check the cable... and if there is anyone around you that having the same cable... test to charge your device with their charger...
kable said:
Install SetCPU. :good:
Click to expand...
Click to collapse
and wtf are you talking about...

terraccan said:
Now another bugging problem is that when I plug the charger after the battery having completely drained and the device is turned off by itself (before completing 48 hours), the screen shows a warning logo first instead of the charging icon. The warning logo has warning sign and the icon of a drained battery with a red color at the bottom of it. I do not know what does that mean. I just know that when that appears, the device is not charging at all. I have unplugged and plugged it back 3 times to get it charging again. So far, it happened two times and I am sure it will happen again but I just want to know whether this is the sign of an unhealthy battery or any other parts of the device? This happened to anyone else? Your feedback is welcome and well appreciated.
Click to expand...
Click to collapse
First of all, you may not want to have left the battery completely drained, as this might damage the battery. Secondly, since your battery is completely drained, some undercurrent protection mechanisms must be activated, and there should have enough input current before the battery could be charged again. The data cable should not have enough current to charge up the battery at this state, it is lucky for you that you got it charging again after three trials.
If you drained up the battery again, it's recommended to charge it up with the AC charger.

Related

Wizard suddenly died yesterday

Hello,
I've a Wizard that is approximately 20 months old. Yesterday, before I went to bed, I set the alarm clock on the Wizard, put it next to bed and went to sleep.
This morning upon waking up I tried to switch on the Wizard but it couldn't. Firstly, I thought the battery was discharged, so I tried charging through USB on my computer -- it wouldn't charge or start. Then, I tried charging on the default charger -- again nothing.
I tried removing battery and soft reset - nothing. It's really weird, yesterday I left it working, no-one has touched it and today it's totally non-responsive.
Any ideas what might be wrong/how can I bring it back to life? Would a hard-reset help?
Regards,
1. how much charge was in the battery last night?
2. is your battery 20 months old also?
3. do you have a spare battery to try?
4. do you have many applications, music etc. on the device?
1. how much charge was in the battery last night?
Click to expand...
Click to collapse
Unfortunately I can't remember, however I have an alarm which sounds periodically when the battery is below 20%, so I'm guessing I had at least 20 percent. Could be wrong, of course, but most likely above 20%.
2. is your battery 20 months old also?
Click to expand...
Click to collapse
Yes, this is the original battery. Aprx. 20 months old.
3. do you have a spare battery to try?
Click to expand...
Click to collapse
I don't have that. I guess I could go to mobile phone service shack and check there. Do you think it's the battery?
4. do you have many applications, music etc. on the device?
Click to expand...
Click to collapse
The Wizard came with a 64MB card I think. I had around 10MB free space. 3-4 applications, 2-3 mp3s. Nothing unusual.
Same thing (sort of) happened to mine after about 187 months. I was using mine and it hung up. I hit the reset button and that was the end of that. Even when plugged in it does nothing. Tried a hard reset... nothing. Soft reset.... nothing. Dead. Zip. Nadda.
Good news? Replaced it with a Kaiser!
vivanov said:
Hello,
I've a Wizard that is approximately 20 months old. Yesterday, before I went to bed, I set the alarm clock on the Wizard, put it next to bed and went to sleep.
This morning upon waking up I tried to switch on the Wizard but it couldn't. Firstly, I thought the battery was discharged, so I tried charging through USB on my computer -- it wouldn't charge or start. Then, I tried charging on the default charger -- again nothing.
I tried removing battery and soft reset - nothing. It's really weird, yesterday I left it working, no-one has touched it and today it's totally non-responsive.
Any ideas what might be wrong/how can I bring it back to life? Would a hard-reset help?
Regards,
Click to expand...
Click to collapse
Mine died too when i was flashing...
Leave the phone in the original charger for a while and see if it picks up...sometimes it comes back to life by doing that...
If that doesnt work, try a new battery, you might be lucky...
A somewhat strange development occurred today:
Today (3 days after it stopping working) I randomly tried to switch the Wizard on and it indeed switched on. It showed that it had 0% battery. It didn't even show 0%, basically the battery charge graph was empty - no number, no fill, nothing.
While it was on charge the charge light was on (while it was 'broken' the charge light was off when I tried to charge). So I left it to charge and when I checked back in 15 minutes it was back to being 'dead'. Can't be started, no charge light, nada.
I don't really know what's going on, however I'm highly suspicious of the battery. Currently, I'm periodically trying to switch it on again so I can backup my data.
Any ideas what might be wrong with it, do you think it's the battery or is it more serious?
Regards,
The battery won't charge if it gets to low.
There is a thread about using a 9V battery to get the battery up to a level so it will charge. I don't have the link for it, try searching for it or maybe someone else will reply.
You might have a bad battery. I bought a new battery because I didn't think I was getting the life that I should. I tried using the old battery about a month after when I had to run out and my main was low. About 15 minuets later my phone started shutting of and rebooting. That was the end of that battery.
Yep, it's possible. If the battery is to empty, you can't charge the phone. It is stupid but it's just like that. You also can't power on the phone without a battery with the charger connected.
Yesterday I received my wizard and I had to revive my battery too because it was completely empty. I used a self made 5V power supply and after 2 minutes charging I placed the battery in the wizard and was able to charge and boot with the charger connected.
Here's the 9v battery trick, connect the + from the 9v battery to the + of the phones battery and the - to the -, hold there for only 10 seconds then remove the connection for 10 seconds and then repeat the process about 8 to 10 times and then put the battery back in the phone and connect it to the wall charger to fully charge.
Thanks for the advice. I'm going to do the jump-start thing.
However, I've hard time determining which is the - and which is the + pin layout on the battery, since the label is not correctly applied.
As far as I can see the - is the one at the far right, however I'm not sure which is the + pin.
Can someone help me with this, please?
Regards,
vivanov said:
Thanks for the advice. I'm going to do the jump-start thing.
However, I've hard time determining which is the - and which is the + pin layout on the battery, since the label is not correctly applied.
As far as I can see the - is the one at the far right, however I'm not sure which is the + pin.
Can someone help me with this, please?
Regards,
Click to expand...
Click to collapse
When you take out the battery and put it back in that direction ,turn and face up the connector side fasing you,the first connector from the rightside of the battery is the ' + ' and the last is ' - ' towards the leftside.Be careful while connecting and try not to touch other connectors. Don't keep the connections longer then 10 seconds interval.
good luck
Xeno1,
My MDA battery also died and went below re-chargeable state. Your trick to use 9volt battery to jump-start it worked just fine for me. I connnected for about 20 seconds (2x times) and plugged it back into phone and connected USB cable to it and my nice yellow charging light came back on. After about 30 mins, I could use the phone.
THANKS FOR THE GREAT TIP!!!
easier fix, take a standard usb cable. rip off the smaller end with a wire cutter, expose the red and black wire. take out your battery, than connect the negative(black) wire to the negative end of the battery, than the red wire to the positive end of the battery, leave it in there for exactly 3-5 minutes for jump start. after that turn your wizard on, and quickly shove it inside a new usb cable. or the wall charger.
note:
if not done correctly, you may damage your wizard or the battery. if theres a power overload or your power goes out. your wizard will burn out!
feedback is greatly appreciated.
p.s after that my battery seem to be weak, charge barely holds for 12 hours. after 12-14 hours it will die out. so i suggest buying a new battery after couple of days.
Thanks guys! Vario died yesterday and wouldn't turn on or charge.
Tried the 9v battery recommended here and it worked! I was a little unsure which end was - and which was + but using the advise above, got it right. Wasn't too worried as found and ordered a replacement from ebay this morning for £7.
The first connector on the right hand side, nearest the end of the battery is the + the one more towards the middle and further away from its corresponding end is -, or at least, thats what worked for me.
Thanks again!
Experiencing the same issues after I set aside my Mini S as it was experiencing problems with regards to its screen alignment. Wasn't able to charge it during that time I kept in the drawer unused - due to frustration as I can't use it anymore. After downloading a guide to disassmble it so I could remedy the problem I found out that it won't power up anymore even with a new battery.
Well, haven't tried the jumpstart thing and the original battery was disposed of already to try the jumpstart idea. Could it be the internal battery is causing the problems? I opened my unit up and tested the internal battery for power and it registers a measly .2V left. Will use the 9V thing to power it up (as been doing that before on watch batteries that are hard to find replacements) before I do it on the main battery. Here's hoping it works as the Mini S has been quite useful for me until now.
UPDATE: I charged the internal battery and it now reads 1+ V and the external battery at 3+ V. No luck yet though as the unit still won't show any life. Any suggestions?
Vivanov, I know it's been a few years now, but did you end up fixing your problem? If so, how?

hero won't charge

i drained my hero completely now when i plug my charger into the amber light blinks and the device won't turn on or charge like i said the amber light is blinking not solid please help!
im guessing its blinking because its low. have you tried pluggin it into the pc usb slot? tried another cable? maybe its just your one charger
how did you drain it? were you tethering and it got hot?
98classic said:
im guessing its blinking because its low. have you tried pluggin it into the pc usb slot? tried another cable? maybe its just your one charger
how did you drain it? were you tethering and it got hot?
Click to expand...
Click to collapse
Try another charger, i had two chargers go bad on me.
i ran the battery down while i was talking on it.
and now it just does that.. im very depressed about it lol!
let it charge for a while until it has enough power to complete a boot cycle.
i tried this, it sat overngiht for 7 hours and stil ldoes the same thing..
Tried pulling the battery and putting it back in after a minute or two?
absolutely man i've tried everything i've known..
Just leave it plugged in with the blinking amber. It should charge up enough to turn solid amber within 15 minutes.
that's the thing i left it plugged u for 7 hours and still flashing amber
wow... don't know what to tell you. call sprint about that
Have you tried booting w/o the battery into recovery and resetting the battery stats?
I would definitely try what Biggz said above. I do recall hearing once that the type of battery the Hero uses isn't meant to be completely drained, and that's why it shuts off before it runs completely down to 0. You may have messed up your battery or something. I think the easiest thing to do would be to call Sprint.
Sounds like a problem ipods have lol..when the battery completely drains it,it sometimes doesnt charge up..n if it does it takes forever....try a different battery.if that dont work,take it to sprint..thats weird.keep us posted on what they tell u.....most likely the battery overheated.id probably take the battery out meanwhile i take it to sprint,just in case the battery leaks; it wont mess up the phone.
Yeah, Lithium-Ion batteries aren't meant to be deep cycled (completly draining them and then trying to charge them). It can shorten the batteries lifespan, or kill it altogether.
Mr. Biggz said:
Have you tried booting w/o the battery into recovery and resetting the battery stats?
Click to expand...
Click to collapse
You can't boot into HBoot, Fastboot, or recovery without the battery. Tried it on mine.
battery issue
I've run into this issue like 4 times. Its one of my biggest issues w the hero. I go to bed w a low battery warning plug it in then i wake up to a paper weight.
Has anyone found a good answer? my phone charged 7hrs and I've been pulling the battery on off plug unplug for about 2 hrs now. I've already ordered a new battery but that wont help me today.
Anyone find a fix? I'm up for any and all suggestions: eek:

Milestone 2 - Died..?

My girlfriend has a MS2, it is approx 5 weeks old.
It is as factory, she not interested in modding it.
Today, she took a call. Battery was at approx 60%, call lasted about 10min.
When she took the phone away from her ear, it powered off.
It has failed to restart.
We've left it connected to power for a few hours, we've left the battery out for a bit..
We've tried all the different versions of key presses + power on (camera+power, x+power, @+power, vol dn+power, etc, etc) but the phone simply does not respond to anything.
The only thing it will do is, the little light illuminates next to the micro-usb port when it's connected to power/pc.
Any suggestions as to what may have caused this?
Suggestions for a cure?
As stated, it is 5 weeks old, totally as it left the factory (unmodified/unmodded)
Not happy!
Don't like the idea of having to return it to HK (ebay vendor) for warranty, if it comes to that, think we'll get a refund and abandon Motorola. Pathetic.
TIA for any suggestions..
Did you try to remove battery for a while? That helped me in similar situation.
yes, we have tried that.. :-(
I had a similar problem last week! It really shocked me.
I connected the charger and left it connected. After about 5 hours it booted up again, but the battery was only at 5%.
After that I simply let it charge and finally the Milestone worked again. You might want to try another battery if it really doesn't charge or boot anymore.
w0ndersp00n said:
I had a similar problem last week! It really shocked me.
I connected the charger and left it connected. After about 5 hours it booted up again, but the battery was only at 5%.
After that I simply let it charge and finally the Milestone worked again. You might want to try another battery if it really doesn't charge or boot anymore.
Click to expand...
Click to collapse
It happened the same here. Just leaved it charging, when I least expected it booted up. Let it on the charger, if it doesn't fix, return to ebay.
Make sure you are using the wall socket charger. If my battery dies, USB won't charge the phone, at least not in a reasonable amount of time.
There might be a part on ur motherboard thats draining too much juice. I had the same problem on my phone though the battery depletion wasn't as significant as yours. Check with ur dealer and claim it from ur warranty. Its apparently a common problem with the milestone range
Sent from my MotoA953 using XDA App
Similar thing happened to mine one afternoon, after a quick play around I left it plugged into the charger for a few hrs and it eventually booted back up itself.

phone charging problems

hey xda friends,
i have a small problem with my batterie /charger.
it is charging very slowly i am running cm7 so i plug it in very often yesterday at 6 pm it was almost flat so i plugged it in but keep on chatting and surfing/reading so battery wasn't gaining and it kept reading 5% (same as when i plugged it in) i thought well it's just usb so i use a lot of power and it keeps it's level
but when i got to bed (1am ) it let my wallcharger do the task
today when i got up(6am) i looked at my phone and it only read 80% (before i deplugged it) perhaps somebody knows the problem (battery /phone) i have just original parts (charger and battery) i am running cm7 for a while (yesterday i just switched to 2.3.3) never had this problem before....
i tried
power off
power on
pull battery
wipe battery stats
....
thank you for your help
Could it be you have something draining the battery heavily?
try a full wipe then reflash
ghazi.urfali said:
Could it be you have something draining the battery heavily?
try a full wipe then reflash
Click to expand...
Click to collapse
no new installed apps and unplugged it drains normally
Pull the battery, and with the battery out hold the power button for a good 30 sec, on most hardware these days this is how you usually hard reset the power management unit. Try it and lemme know how it goes.
i dunno if this will work for SGS but i guess you have nothing to lose.
ghazi.urfali said:
Pull the battery, and with the battery out hold the power button for a good 30 sec, on most hardware these days this is how you usually hard reset the power management unit. Try it and lemme know how it goes.
i dunno if this will work for SGS but i guess you have nothing to lose.
Click to expand...
Click to collapse
thank you for your help unfortunatly it didn't work ordered a new batterie will report
push it real good nanana
if the battery drains normally.. .. then perhaps it's the charger itself (???)
I was seeing something like this but not as drastic. Tried a different wall plug and things were better.
poundesville said:
if the battery drains normally.. .. then perhaps it's the charger itself (???)
Click to expand...
Click to collapse
i used usb and another charger.....
quikbeam said:
I was seeing something like this but not as drastic. Tried a different wall plug and things were better.
Click to expand...
Click to collapse
i tried it at two spots but with same results on both outlets my desire hd charges nornally
i think it could be the battery
i get a new one on monday i will report
I have a similar problem. My phone also never charge to 100 percent. It reaches to max 85-90 percent and if i continue to charge it starts discharging. If i let it to charge till morning, when i disconnect the charger i read 65-70 percent. I have another battery but not original, it behaves more weird. Dont know if the battery is problem.
Sent from my GT-I9000 using Tapatalk
seresseran said:
I have a similar problem. My phone also never charge to 100 percent. It reaches to max 85-90 percent and if i continue to charge it starts discharging. If i let it to charge till morning, when i disconnect the charger i read 65-70 percent. I have another battery but not original, it behaves more weird. Dont know if the battery is problem.
Sent from my GT-I9000 using Tapatalk
Click to expand...
Click to collapse
not with me the new battery changed nothing
gbohm said:
not with me the new battery changed nothing
Click to expand...
Click to collapse
I have tested with the wallcharger. It charges to 100 %. And the phone battery drainage is normal. Like 2 days.
Remaining possibilities.
1) Firmware problem. Reflashed the phone with the new firmware. I will see if it changes anything. Not likely though.
2) Hardware problem. The phone's charging usb part damaged and there is some kind of disconnection.
3)May be bootloader got damaged??? Even if the phone closed, it doesn't charge to full capacity.
Edit: The problem seems to be the second one. While flashing with odin it failed many many times. I was just scared that the phone was brick.
Then i realised that the connection with odin is not stable. I press with my finger the the usb charging cable to left and right and I have seen that
the connection comes and goes. After that i have succeeded to flash the phone while pressing to the mini-usb part with my finger. it seems that
that while charging also the connection is not stable so it never fully charges.

Battery issues

My phone's battery level is stuck at 35% and doesn't change on charging it over and over again. Left the phone charging last night and it was still charging at 35% in the morning. However if there's a drop below 35% level it shows on the screen but again charging the phone drains complete battery within a minute or two. The phone gets switched off and starts charging from 0. On switching it on sometimes it again starts draining the battery fast or stuck at some another battery level. Please help what should i do.
I tried reflashing rr rom freshly but it didn't solve the issue. Twrp recovery shows the same battery %.
Screen recorded as below.
https://youtu.be/ubYYBRl2HVU
Charger or phone faulty, either requires exchange under warranty, take it you are using cable and charger supplied with phone.
Do a factory reset just in case something has screwed up the OS, trying to charge with the phone switched off usually will confirm whether hardware or software problem, ie will not charge when off says its hardware.
Smeagal192 said:
Charger or phone faulty, either requires exchange under warranty, take it you are using cable and charger supplied with phone.
Do a factory reset just in case something has screwed up the OS, trying to charge with the phone switched off usually will confirm whether hardware or software problem, ie will not charge when off says its hardware.
Click to expand...
Click to collapse
I left the phone on charge last night in switch off mode but the battery level shows only 10% in the morning. Internally however it's charged 100% but the level is not showing correctly. Also since I've unlocked the bootloader, the device isn't under warranty.
what a weird battery behaviour!!
Whenever I start charging my phone using stock charger, it drains the battery within minutes instead of charging. Once the battery is completely drained out the battery starts charging from 0% and after a full night of being plugged into the charger it shows partially charged at different level when it's switched on even though it's full.
Is there no way to troubleshoot this or the right way to calibrate the battery?
22sumit said:
what a weird battery behaviour!!
Whenever I start charging my phone using stock charger, it drains the battery within minutes instead of charging. Once the battery is completely drained out the battery starts charging from 0% and after a full night of being plugged into the charger it shows partially charged at different level when it's switched on even though it's full.
Is there no way to troubleshoot this or the right way to calibrate the battery?
Click to expand...
Click to collapse
Follow this guide also valid all Moto devices out there.
https://motorola-global-en-uk.custh...a/moto-g4-g4-plus/topic/battery/battery-reset
PSP07 said:
Follow this guide also valid all Moto devices out there.
https://motorola-global-en-uk.custh...a/moto-g4-g4-plus/topic/battery/battery-reset
Click to expand...
Click to collapse
already tried this in vain. The battery % doesn't change while discharging and decreases very fast while charging.
22sumit said:
already tried this in vain. The battery % doesn't change while discharging and decreases very fast while charging.
Click to expand...
Click to collapse
Contact Moto Service Center hope they will sort out.... Best of luck
Although I think it's a coin toss if it will help, try another charger and a factory reset... Moto service will want you to do a factory reset before sending it in anyway.
PSP07 said:
Follow this guide also valid all Moto devices out there.
https://motorola-global-en-uk.custh...a/moto-g4-g4-plus/topic/battery/battery-reset
Click to expand...
Click to collapse
Thank you, I'll try this one.
PSP07 said:
Follow this guide also valid all Moto devices out there.
https://motorola-global-en-uk.custh...a/moto-g4-g4-plus/topic/battery/battery-reset
Click to expand...
Click to collapse
Tried, it didn't worked.
22sumit said:
My phone's battery level is stuck at 35% and doesn't change on charging it over and over again.
Click to expand...
Click to collapse
Almost the same with different battery percentage.
My G5 plus is under amazon warranty so I'm fine but I would like to know if there is a way to solve by myself and would like to know what the hell happend.
Have you solved this battery issue?
Thank you.
MezzaLuna said:
Tried, it didn't worked.
Almost the same with different battery percentage.
My G5 plus is under amazon warranty so I'm fine but I would like to know if there is a way to solve by myself and would like to know what the hell happend.
Have you solved this battery issue?
Thank you.
Click to expand...
Click to collapse
Not yet, only solution is getting the battery replaced. Now I've learnt to live with it, since the mobile needs to be restarted after every charge and the % gets stuck at some random value despite being fully charged.
22sumit said:
Not yet, only solution is getting the battery replaced. Now I've learnt to live with it, since the mobile needs to be restarted after every charge and the % gets stuck at some random value despite being fully charged.
Click to expand...
Click to collapse
I'll ask for replacement after Christmas holidays. Thank you very much.
I do also have the same problem. It just started a few days ago and sometimes I'd restart the phone and it will fix it and show the actual percentage been charged. But now that isn't fixing it anymore. However, as mentioned before the battery is actually being charged. So let's say it's stuck in 11% and I charge it for a few hours. Then I can use the phone for hours without going below 11%.. but how annoying when it gets there and all of a sudden you are running out of battery ?
Charging with original charger/cable. Do you guys think it might have to do with the turbopower feature?
Has anyone found a solution to this? I'm still under warranty for two more months. But it's always a pain to deal with warranty, you know no phone for a week or more... It would be nice if it can be fixed without going through warranty.

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