Friends,
Is there any way to build a battery driver which calculate battery percentage according to battery voltage.
I my defy battery level indicates full when it reaches 4184 mv and shows 99% / 4130 mv after disconnecting the charger. Phone shutdown itself when it reaches around 3600 mv. So the voltage variation is 530mv.
If we give 4130 mv and above as 100% and every 5.3mv decrease in voltage will reduce 1% battery level.
Ex:- 4130mv = 100%, 4125mv= 99%, 4120mv = 98% ..........4000mv = 75%,............3600mv = 1%.
I am not a developer, so i am just presenting this idea in this forum. Don't know if it work or not.
But if it works i hope the battery drops will reduce.
Thanks for reading this topic and sorry for my bad English
Sent from my MB525 using Tapatalk 2
AW: Battery driver modification
pradeeppk said:
Friends,
Is there any way to build a battery driver which calculate battery percentage according to battery voltage.
I my defy battery level indicates full when it reaches 4184 mv and shows 99% / 4130 mv after disconnecting the charger. Phone shutdown itself when it reaches around 3600 mv. So the voltage variation is 530mv.
If we give 4130 mv and above as 100% and every 5.3mv decrease in voltage will reduce 1% battery level.
Ex:- 4130mv = 100%, 4125mv= 99%, 4120mv = 98% ..........4000mv = 75%,............3600mv = 1%.
I am not a developer, so i am just presenting this idea in this forum. Don't know if it work or not.
But if it works i hope the battery drops will reduce.
Thanks for reading this topic and sorry for my bad English
Sent from my MB525 using Tapatalk 2
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if u look in quarx github he had a custom battd demon which calculate with extra files a better result. but battery drops are a combination of damage battery and a bad sensor for the batterylevel in the defy... thanks moto... in the newest CM10 builds the demon is integrated.
Related
Hi,
If I am not mistaken, the battery voltage indicates the battery capacity.
So, what is your max battery voltage on the standard 1750mAH battery?
You can check like this:
Just right after charged, so when the battery is still on full capacity at 100%, do this:
... Dial *#*#4636#*#*
... Choose Battery Info
Currently, I am using the extended 2000mAH battery and the reading was:
Battery level 100%
battery voltage 4200 mV
Thanks.
4205 mV is the max voltage the stock battery gives. Also in the driver code there are two vakues called recharge and another name i forget, they are set to 4.15 volt and 4.14 volt.
~4200mv for any battery.
My grandma beat me down and took my nexus. Sent from a jitterbug with beats by dre.
I have a strange problem which wasn't appear before...
HOX is turning off when there's about 3600mV and it isn't normal becouse in my battery history there's minimal voltage 3115mV. I know it's absolute minimal value becouse phone can be turned on after half an hour of charging but come on - 3600 it's twice too much !
Wiping battery stats doesn't take effect
What can be an issue ?
Kernel, rom ?
I'm using right now Faux 006 kernel ( main edition without OC ) and InsertCoin 9.4
3.7v is the rated voltage of the One X battery, therefore it shouldn't turn off 3.6v. How are you measuring the voltage? Perhaps the tool you are using is not accurate. Does the phone turn off when there is plenty of battery left (not the voltage, I mean the capacity, i.e: even when there is more than 10% of charge).
I'm using battery monitor widget in all of my phones and as I said - there's correct value of 3115mV so why turning off while 3600
3.7V is standard voltage of all li-on batteries in all phones
btw - I solve the problem ( I paniced much too soon ) , it was kernel fault.
I flash boot.img today morning, now I'm back from work, this time HOX was turning off but today it has still 45% of juice
THREAD CAN BE CLOSE
thanks for effort !
So I have a zerolemon 10000 mah battery for my note 3, I just switched to cm11 and noticed the battery percentage meter was going wacky and wasn't being accurate (eg. It would jump up 10 percent after a reboot or last hours on 1 percent with heavy use) so I followed the instructions for fixing it, I let it drain completely and then I charged it to 100 percent while the phone was off, then I turned it on and charged it again until it showed full just like it said to do in the instructions, after this I went into my battery status app just out of curiosity, there I saw that the battery had 4250 mv , I am alarmed by this because the battery is only supposed to be 3.9 voltz, is my battery damaged? I always thought that the batteries have circuits in them to prevent overcharge then how come it overcharged my battery??
Sent from my SM-N900T using XDA Free mobile app
Actually battery voltage is a little bit tricky:
first of all it will show higher with no load than with load on it and higher the load, lower the voltage, full charge or not.
Secondly for example my original phone battery is rated 3.8v, but at full charge will be higher than 4 volts.
I don't remember how Li ion batteries are rated, but for example NiCd are rated at 1.2v, which would be the voltage the battery shows when under full load, under no load the voltage will be more than 1.5v and if that NiCd battery shows 1.2 v under no load it usually means it's close to being completely discharged. I don't have specs for your particular battery, but I'm sure fully charged with no load will show more than 4v.
Since the battery has protective circuit, it should still be within specs, before the damage occurs, so I don't think you should worry too much, however if you were doing this all the time, I'm sure you will shorten battery life.
Full charge for lipo is about 4.2V. So the battery is not overcharged. The batteries have a protective board on them, and the charge control on the phone won't allow overcharging either.
Hello everyone for the last 3 days this battery calibration has been eating me up with milions of questions so i got perfect idea of what it is and why its important and why my battery needs to be calibrated . till today that i installed an app calls widget battery pro that can monitor your battery behavior and all and as i was watching my battery charging to full i notcied something in my opinions not right , which was the max mv cap my battery got as it hits 100% , my device is a galaxy tab s T705 with a 4900ma battery and here in this screenshot " http://cubeupload.com/im/1HP4in.png " you can see the max mv it got to was around 4324mv is that the battery mv ? or the mv thats going into the battery while charing it , i mean if thats from battery then my battery did not hit it max cap before hitting 100% charge which is when the charger adaptor stoped charging the battery . yes im using the oroginal charger and cable and everything and my battery doesnt show any funny behavior at all during usage i just wana know if thats what i think it is and i need to calibrate it or not to hit it max mv thanks everyone
Mv is milivolts and mah is milliamphere. they're different. Youalready hit your max mv at 4324. Anything higher will make your battery bloat or worst. Explode.
Try using battery monitor widget, you'll see the exact mv and mah values while charging. It will show you that once the mah reach 4900, your charger will cut off and your phone will notify you to disconnect it
hey mate ty for your respond I however got that all sorted out >< it was all my bad I can now easily hit 8hrs screen time with a full charge and that tells me my battery is more than okay and yes now i understand the difference between mv and ma thanks a lot years I do use a battery monitoring widget and when my device is fully charged it stops at 4900 thanks for everything it was all a misunderstanding cheers
Sent from my SM-T705 using Tapatalk
Hi.
I recommend the free version of GSam Battery Monitor, enable the alarms in the settings, this is the best monitor i have see, and i have tried them all.
It save my 10.5" from damage or worse as the battery temp alarm went off during the night when i was sleeping, some misbehaving app, when it was in it`s case supposedly sleeping.
https://play.google.com/store/apps/details?id=com.gsamlabs.bbm&hl=en_GB
John.
Hello,
I'd like to charge my HTC 10 battery pack by using a battery cycler for R&D uses. But I need the current I should use and cut-off voltage limits? Can anybody has an idea about these values?
I saw 4.287 Volts in open circuit conditions. How much percent of the battery is charged in 4.287 Volts?
Thanks in advance.