[Q] /sys/class/power_supply/battery - Galaxy Note GT-N7000 Q&A, Help & Troubleshooting

file batt_current_now have "0" value with normal Note state (discharge), "450" with USB connection and "1000" with AC adapter charge.
Value in mA, yeah?
Аnyone has ideas on how to upgrade the battery driver to show the value of current consumption?

Try current widget from the market
https://market.android.com/details?id=com.manor.currentwidget
Sent from my GT-N7000 using xda premium

I kept up a correspondence with the author (RmDroider), and we have failed to deal with Samsung Note...

Related

Battery percentage problem

My SGT is having a strange battery percentage problem. The battery was at 95% and the unit was on flight mode last night with no apps running. This morning it was dropped to 78% (over about 6.5hrs). So I turned it off and restarted, the battery percentage was back to 94%.
For some reasons, the battery percentage is dropping way too fast until I restart the unit, it seems like android is reporting a wrong battery percentage. Or could it be the battery? Does anyone experience the same problem? Any solution? And what is the normal power consumption under flight mode for other SGT user?
I just did a hard reset (wipe cache/data and reset to factory) to see if it helps and I am not installing any apps just to keep it in stock condition.
Thanks!
Generally, about 3% lose of bettery during the whole night with mobile on, while power meter may go wrong on Android devices, for example XT701 is.
Sent from my GT-P1000 using XDA App
So the XT701 has the same problem? How do they resolve this?
I start to think if I should take it to Samsung for repair.
Any help guys??
Would flashing a new firmware help the situation? I am tired of rebooting the tab so often just to get the right battery percentage report.
Other than this issue, the tab is PERFECT. I just wanna get this over with and enjoy using it.
Still looking for helps.....
Galaxy Grand Quattro: battery is fine, just the prob is with the indicator
Galaxy Grand Quattro : while charging it suddenly jumps from 78% to 100% and asks to unplug the charger. When i unplug it it shows 78 or 80% back again !!! I believe that this is related to software issue. So i have done a factory reset, but no use. someone pls help if this is a known issue.. Googled abt it but dint fine anything there.. Thanx in advance.
hackcookie404 said:
Galaxy Grand Quattro : while charging it suddenly jumps from 78% to 100% and asks to unplug the charger. When i unplug it it shows 78 or 80% back again !!! I believe that this is related to software issue. So i have done a factory reset, but no use. someone pls help if this is a known issue.. Googled abt it but dint fine anything there.. Thanx in advance.
Click to expand...
Click to collapse
Have u tried a different charger? It might be the charger not working as supposed. Also how old is the battery and is it an OEM? It might be old and not working right also
Sent from my Nexus 4 using XDA Free mobile app
alwaysbmx said:
Have u tried a different charger? It might be the charger not working as supposed. Also how old is the battery and is it an OEM? It might be old and not working right also
Sent from my Nexus 4 using XDA Free mobile app
Click to expand...
Click to collapse
Thanks for the response this prob is solved.. prob was with the cable..anyways tnx for the reply.. take care
Sent from my GT-I8552 using XDA Free mobile app

[Q] battery wont charge

i have a galaxy tab and i have the official 2.3.3 update
had no issues until a few days ago
for the last 2 days
my tab wont charge
more than 23 percent?
any fix?
Did you use the charger that came with the Tab or something else? Same thing happened to me after update using other Samsung charger (which worked when in 2.2). Use Tab charger and everything back to normal. Hope the same thing happens to your Tab.
Are you actually only getting 23% battery? Or does that 23% last what would normally be the full length of the battery?
It's easy to think that perhaps you just have a corrupt battery reading, which is easily fixable... with root.
i use the standard samsung charger
also
even when the device is off, it doesnt go past 20ish%
and it lasts for about 2 hours?
I would advise you to the a hard reset, however do your backup before resetting it.
If it doesn't work, probably your battery has encounter issue with the internal sensor of the cpu, I recommend you to send in to the service center to request for a change of battery or do the disconnection of battery by yourself.
Sent from my GT-P1000 using XDA App
if your tab still in warranty time, my suggestion is, bring to samsung service center. use the warranty.
i've rooted the device.
So unroot it and take it back...
Swyped from my "better than an iPad" tab running Overcome Hermes.

What's you fav battery saving tricks/tips/tools....

For me I switch off all my WiFi and 3g and turn powersavemode app on works like a charm 15% battery drain over 7hours....
Any tips on how to save battery w/o having to switch off WiFi/3g?
Sent from my LG-P970 using xda premium
15% drain in 7hrs... doing what??
I mean, I loose 4% in 8hrs sleeping [doing nothing] and if I turn on airplane mode it varely loose 1% in 8hrs sleeping
i loose 3 to 4 % on 8 hrs too with wifi off
Bit of games, calls and texts....
Is it possible to actually damage your batt by over charging, I know it was possible before, but some ppl tell me nowadays batt don't do that anymore...
Sent from my LG-P970 using xda premium
Zaihanzainal said:
Bit of games, calls and texts....
Is it possible to actually damage your batt by over charging, I know it was possible before, but some ppl tell me nowadays batt don't do that anymore...
Sent from my LG-P970 using xda premium
Click to expand...
Click to collapse
I don't know man "a bit" is no accurate thing but I thing I have almost the same battery usage... I do a lots of txts...
now, for the overcharging... as far as I know all [or almost all] new electronic stuff that needs to recharge has a sensor for voltage and power, so when the batt is low or empty it tell you is the same when is fully charge it tells you and "cuts" the power supply... if you have some time look at your phone when is charging, when at 100% it tells you and "cuts" power, a few mins later it will be at 99% and inmidiatly starts charging again
6 hours sleeping it only drain about 2% from 37-35 yesterday
No special app used in my black right now,cause i'm waiting for the new updates
But to answer the title, it's Juice defender
It saves me a lot when i forget to turn off the conn
Sent from hell !
Felsar said:
I don't know man "a bit" is no accurate thing
Click to expand...
Click to collapse
Does "quite a bit" help haha
Sent from my LG-P970 using xda premium
I use JuiceBattery ultimate in order to save my battery, and still every night with no opened apps, about 12% drain. Is it normal?
Is it possible that Juicedefender does the opposite - draining the battery?
ohadz said:
I use JuiceBattery ultimate in order to save my battery, and still every night with no opened apps, about 12% drain. Is it normal?
Is it possible that Juicedefender does the opposite - draining the battery?
Click to expand...
Click to collapse
AFAIK,JD only disconnect the conn when you idle but i does run in the background
So,yeah it's possible
CMIIW
Sent from hell !
I've read that bad apps can cause battery drain too, is there a way to locate dem baddies?
Sent from my LG-P970 using xda premium
I honestly don't know how are you manage to get such low power consumption on your phones. Just today I unplugged my phone little more than 5 hours ago. I did absolutely nothing with it, it just lied on a table and I'm already down from 100 to 84%. Just to be clear, for those 5 hours wifi, gps and 3G was off all the time. I'm on stock Froyo 10e, some of the LG bloatware removed and replaced with so called energy efficient apps from the market (3g watchdog, battery monitor widget). The only two original LG widgets that I use are weather & clock (with manual updated weather) and contacts. I really don't know what I'm doing wrong but my phone with really minimal usage can't last more than 1 day .
RedmanDR said:
I honestly don't know how are you manage to get such low power consumption on your phones. Just today I unplugged my phone little more than 5 hours ago. I did absolutely nothing with it, it just lied on a table and I'm already down from 100 to 84%. Just to be clear, for those 5 hours wifi, gps and 3G was off all the time. I'm on stock Froyo 10e, some of the LG bloatware removed and replaced with so called energy efficient apps from the market (3g watchdog, battery monitor widget). The only two original LG widgets that I use are weather & clock (with manual updated weather) and contacts. I really don't know what I'm doing wrong but my phone with really minimal usage can't last more than 1 day .
Click to expand...
Click to collapse
I had probs with battery monitor, it drain batt like crazy so I uninstalled it and prob is gone... some of those apps kill more than what they save
the only apps I have is juiceplotter to monitor battery, cpuspy and android booster which I found very usefull cause it turn off everything: wifi, 3g, bluetooth, apps not in use; all in 1 click and as far as I know it really doesn't drain any battery or it's so minimal that it's not displayed
Ok currently I'm trying the higher voltage charger (5v) trick and I can see a huge difference ald I don't know how it works but 0% drop in 6.5 hours WiFi, 3g off and 10 sms Woot!
Sent from my LG-P970 using xda premium
Zaihanzainal said:
Ok currently I'm trying the higher voltage charger (5v) trick and I can see a huge difference ald I don't know how it works but 0% drop in 6.5 hours WiFi, 3g off and 10 sms Woot!
Sent from my LG-P970 using xda premium
Click to expand...
Click to collapse
what trick is it?
Apparently cos our stock charger is only 4.8v and our batteries are 5v/1500mah so if we use a 5v charger somehow it helps with better charging and battery life, I'm using a bbm charger which is 5v
Sent from my LG-P970 using xda premium
well i root my phone then removed the system applications using -system app remover.
im getting a much better battery backup . at least 30-40 % better . as far as the stand by is concerned .
i play a lot of games and text a lot so phone does not last over 1.5 day now ,
earlier it was one day only.
so im relatively happy with this phone because the battery backup is better now.
hope a software update to gb will help even more
do you guys have a battery percent number of 99%?
my phone ALLWAYS skips the 99.. it goes from 100 to 98 in 10 min after doing nothing..
(it's in the nova rom, its with official stock and it's with cyano.. and batt stats are renewed enough..)
PS: not to mention how poor my phone is daily.. chargng in the night.. at the end of the day 20% (too little to have all day at school, too much to power it up at night.. )
Zaihanzainal said:
Apparently cos our stock charger is only 4.8v and our batteries are 5v/1500mah so if we use a 5v charger somehow it helps with better charging and battery life, I'm using a bbm charger which is 5v
Sent from my LG-P970 using xda premium
Click to expand...
Click to collapse
Ah ok! I use 5v charger since i bought the OB. I charged it only 2 or 3 times with original charger and the battery life was a little lower than 5v charging
I reboot mine every morning. It seems to make some sort of background task started by alarm or something.
A normal day at work leaves me with 80% left.
If i don't reboot it will eat up the juice in just 5 hours.
Also juice defender helps quite a bit.
Sent from my LG-P970 using xda premium
K this has been helping me with my battery alot
1) install a new rom
2) using 5v charger
3) installing a firewall and prevent unnecessary stuff from connecting to 3g
4) uninstalling task killers(takes alot to restart the apps you killed)
5) uninstall battery monitoring apps (surprisingly)
6) use stock included lock screen
--------------------------------
Added:
7) uninstall anti virus apps*if you dare* (cos from what I understand Android has a sandbox type thing which traps viruses sorta so unless you go to alot of dodgy sites often you wont need it, imo a firewall is enough)
8) Turn off automatic updating for apps in the market
9) Turn off un-needed snyc features but do not turn off the "Background data" sync and "Auto sync" under the General sync settings or you might face problems going to certain sites, instead turn them off individually via the "manage Accounts" menu (I turn off mail snyc, fb snyc, watsapp snyc, contacts snyc)
Personally this had helped me alot in terms of battery....
Sent from my LG-P970 using xda premium

[Q] Battery Charging Cycle counter

I've got a 2nd hand phone and would like to check the status of the battery.
Is there a counter of battery charging cycle somewhere in the Sony Xperia Z1 (which counter is not reset during the process of factory reset)?
Get onto your keypad and dial *#*#service#*#* and in the menu will find calibrations and tests etc...one of those options has the battery health in it, click it and it will tell you what condition your battery is in a mAh figure and will say 'good, no need to replace' or 'bad, replace the battery'.
Hope this helps, I haven't actually got the handset in front of me or I'd guide you through the menu.
There is no counter. Also nobody charges always from 0 to 100, so a counter would be senseless
Sent from my C6903 using XDA Premium 4 mobile app

[Q] Battery not working

It seems like my battery it's not working, My phone reboots randomly and when reboots shows a lower percentage.
A lot of friends have this same problem with the same phone. Anyone has the same error?
S3 mini is notorious for poor battery power but there are plenty of apps that can help with that. If your phone is rebooting a lot it could be more an issue with the rom you are using.
Sent from my GT-I8190 using XDA Free mobile app
if this issue doesn't appear (rebooting itself) when the phone plugged to charger then you must change battery, this happened to me too after 1 year of purchase. i'm on stock rom, and i use too match 3g mobile data which consome huge power.
sry 4 bd english

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