Hi Folks,
Can anyone tell me what voltage a fully charged G2 battery should read? I got some water damage and I measured my voltage with a volt-meter and it is currently reading 3.1V
The phone just flashes 8 times with red notification.
Thanks in advance.
Cheers,
Trev
Related
in one of the threads i read that if you want to know weather your battery is working on full capacity or not you have to get 4.20 to 4.50 V when fully charged
i have been working on that for a couple of days with different builds
but all i got was a number between 4.150 to 4.18
now the big questions is this
how much you dear friend get when your beloved hd2 is fully charged and the snap dragon inside is angry enough?
just post your voltage that you get also any idea is welcomed
I've read 4.3 is what we're after but never get past 4.197, even after clearing battery stats, doesn't seem to be too much of a problem though!
4.2 is the most I ever got on my phone. I've never wiped the battery stats, too afraid now with magldr's charging problems.
From my understanding of lithium ion batteries, they last longer at less than full charge anyway.
You also need to take tolerance into concideration.
The Voltage sensor probably has a couple of % tolerance which can also be influenced by temperature, humidity etc
So I wouldn't worry, or even compare, if one is stuck at max 4.1 to 4.3 Volts.
Fluctuating Charging Voltage
Nice thread. Guys, I need your reply...
I'm designing a portable 4 Ni-MH powered USB charger for my Xperia X8. The peak summing voltage is 5,9V for zero load.
The question:
1. Is 5,9 V tolerable to be the input voltage?
2. What is definitely the 'legal' input voltage tolerance for the X8?
3. Does any recent handset always have built-in voltage regulator to make sure the battery is charged correctly?
Thanks for sharing...
So I was wondering if anybody knows what the normal battery voltage is supposed to be for this phone?
Because I have noticed that the battery voltage is spiking fairly often at 4.3V or more, when it's charging at 90% charged or above.
current
Which kernel are you using? There is a option to change charging current in some kernels.. check for it using EXtweaks. if so change it to a lower value.. default is 650mA on my s2.
UKROB86 said:
So I was wondering if anybody knows what the normal battery voltage is supposed to be for this phone?
Because I have noticed that the battery voltage is spiking fairly often at 4.3V or more, when it's charging at 90% charged or above.
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On mine too! I've seen it at 4.3v+ when the battery is at 100% charge
I'm no theoretical electrical philosopher type, but voltage will read higher while you're charging. Your car battery is at ~12V while the car is off (it's a 12V battery), but while the car is running voltage will be ~14V
CMNein said:
I'm no theoretical electrical philosopher type, but voltage will read higher while you're charging. Your car battery is at ~12V while the car is off (it's a 12V battery), but while the car is running voltage will be ~14V
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Which battery app is that?
Yea it only seems to spike above this when charging above 90% before 90% it never reaches 4.3V. I've set an alarm to tell me when it goes above 4.3V that's how I know.
UKROB86 said:
Which battery app is that?
Yea it only seems to spike above this when charging above 90% before 90% it never reaches 4.3V. I've set an alarm to tell me when it goes above 4.3V that's how I know.
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Battery Widget? Reborn! <---seriously, that's the name
http://goo.gl/ZaZbR
Are people here with this problem also experiencing the problem of the phone detecting that it's on low power USB charge mode when it's actually plugged into the wall and supposed to be on AC??
Not me, but we don't know that this is a problem.
Sent from my Nexus 4 using Tapatalk 2
Hello, i have bought a new battery and it is reporting wrong temperature which is always -7 c or -8 c. I cant leave my battery in wall charger or in phone to charge, because it may overcharge since its showing a wrong temp value and explode or cause a fire. (also it chargers never report it as"charged", always red led on phone and blinks on standalone charger). I think battery has a malfunctioning thermistor, so i talked to seller and he sent me a new one, but this battery has the same problem. Is there a way to fix this? Battery is not oem , it says oem but it doesn't seem like a oem (poor printing and some differences but it has a serial and manufacturing day on it). Can you guys please help me? I don't know if i should return these batteries.
edit: i forgot to state that baterry can be charged with a external charger. Seller let me keep one of the batteries and it is functioning as expected even it has a wrong temperature reading. I suggest that someone with a battery problem should read musicfanat's post.
cizkek_ said:
Hello, i have bought a new battery and it is reporting wrong temperature which is always -7 c or -8 c. I cant leave my battery in wall charger or in phone to charge, because it may overcharge since its showing a wrong temp value and explode or cause a fire. (also it chargers never report it as"charged", always red led on phone and blinks on standalone charger). I think battery has a malfunctioning thermistor, so i talked to seller and he sent me a new one, but this battery has the same problem. Is there a way to fix this? Battery is not oem , it says oem but it doesn't seem like a oem (poor printing and some differences but it has a serial and manufacturing day on it). Can you guys please help me? I don't know if i should return these batteries.
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I've never seen a negative temp in a batterie for our phones but i think i would send them back instead.
faustino_pico said:
I've never seen a negative temp in a batterie for our phones but i think i would send them back instead.
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thank you for your reply, i have already returned one of the batteries . i better change my posts header. the one batery im keeping has no charge problem anymore, i dont know what changed but still temp problem exists, im regularly checking it with my hand :cyclops:
In fact the temperature is used only as protecting parameter - to avoid overheating (which sometimes may lead to fire). The only way used to control charge cycle for li- batteries is voltage - charger should stop at 4.2V. Usually, if the charger circuit is fine it will not let the current be so high to heat the battery to dangerous temp. So if it is the thermistor or some other electronic fault then checking temp with hand is reasonable way to control charging.
The fact the charging process finishes also points that battery itself is more or less OK.
By the way, does it provide similar working time as original battery? Is the charging time also similar?
From the other hand you should understand the risk of using battery with any issues. At least you may put the phone while charging to avoid fire in case something goes wrong. (frying pan is not the most crazy idea )
musicfanat said:
In fact the temperature is used only as protecting parameter - to avoid overheating (which sometimes may lead to fire). The only way used to control charge cycle for li- batteries is voltage - charger should stop at 4.2V. Usually, if the charger circuit is fine it will not let the current be so high to heat the battery to dangerous temp. So if it is the thermistor or some other electronic fault then checking temp with hand is reasonable way to control charging.
The fact the charging process finishes also points that battery itself is more or less OK.
By the way, does it provide similar working time as original battery? Is the charging time also similar?
From the other hand you should understand the risk of using battery with any issues. At least you may put the phone while charging to avoid fire in case something goes wrong. (frying pan is not the most crazy idea )
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Click to collapse
It is good to know that it won't effect charging . I am using an external, wall charger for the battery and i haven't noticed any over heat problems in 10 days . It is really weird that i can't charge it with the phone, Also it is lasting really good, a minimum of 6 hours with heavy use (edge connection is always on) and 10 with normal use. I was really afraid that a wrong temparature reading could make the phone unusable.
I don't (yet) have the phone, so I can't answer any of these questions myself. I'd like to know, what is the minimum voltage (at close to 0% charge ) and maximum voltage (at full charge) you guys experienced on stock battery? Also, what are the measurements (H, W,T in mm pls) of the battery? Thanks in advance.
*edit*
Knowing minimum voltage is not so important right now. What I'd like to know most is whether the voltage ever exceeds 4.2v or not. Any quick answer would be highly appreciated. I'm leaving for a trip in a few hours and would like to know before then.
Hi. Someone who had a working phone, can please just tell mr what voltage can it rear with the volt-meter for the battery? I know it should be 3.85, but my battery has only 3.7V, and I don't know if this is the reason for my phone not starting or not. @F.J.V or @tsongming?
D1stRU3T0R said:
Hi. Someone who had a working phone, can please just tell mr what voltage can it rear with the volt-meter for the battery? I know it should be 3.85, but my battery has only 3.7V, and I don't know if this is the reason for my phone not starting or not. @F.J.V or @tsongming?
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Hi, I did not measure it.
In the back there are two inscriptions, but I do not know what they mean because it is in Chinese, one says 3.85V and another 4.4V, I took a picture but I did not measure it.
I think the voltage should be 3.85 I do not know what 4.4 means
If the correct thing was 3,85 it does not seem to me that 3,7 was very little, the difference is part of the accuracy of the measuring device, so those 150mV may not be exact, anyway, I do not know how much voltage this battery loses in the download state, but I bet it will be more than those 150mV.
Another thing is that the voltage is 4.4V, but I lean more to 3.85V
Greetings.
F.J.V said:
Hi, I did not measure it.
In the back there are two inscriptions, but I do not know what they mean because it is in Chinese, one says 3.85V and another 4.4V, I took a picture but I did not measure it.
I think the voltage should be 3.85 I do not know what 4.4 means
If the correct thing was 3,85 it does not seem to me that 3,7 was very little, the difference is part of the accuracy of the measuring device, so those 150mV may not be exact, anyway, I do not know how much voltage this battery loses in the download state, but I bet it will be more than those 150mV.
Another thing is that the voltage is 4.4V, but I lean more to 3.85V
Greetings.
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3.85 is the minimum I guess, and that 4.4 is the maximum safe it supports. But... Idk id that 3.85 is the minimum that the battery goes and let the phone to boot or not
D1stRU3T0R said:
3.85 is the minimum I guess, and that 4.4 is the maximum safe it supports. But... Idk id that 3.85 is the minimum that the battery goes and let the phone to boot or not
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Let's see if someone who understands more than battery voltages can help you.
If you are careful try to charge the battery directly, but be careful, if you pass you can explode.
Ideally, you should do it with a variable voltage source and controlled by an ammeter, so as not to run over the charging current, but if you only have 5V (usb or charger) you can try to charge it a bit by connecting it for two or three seconds, and resting Another four or five seconds, checking the tension from time to time until it passes a little over 3.85V.
Another safest option would be to look for a 3.7V battery charger (it is a voltage common to many li-ion batteries), but if you do not put an ammeter, do it for short periods, although you will not have as many problems as a 5V charger, but maybe it's a bit short, and do not charge the battery a lot.
Eye, if you're not sure do not do anything, as I said the battery may explode. Check that it does not get hot and that it does not inflate and make no mistake with the polarity.
Greetings.
F.J.V said:
Let's see if someone who understands more than battery voltages can help you.
If you are careful try to charge the battery directly, but be careful, if you pass you can explode.
Ideally, you should do it with a variable voltage source and controlled by an ammeter, so as not to run over the charging current, but if you only have 5V (usb or charger) you can try to charge it a bit by connecting it for two or three seconds, and resting Another four or five seconds, checking the tension from time to time until it passes a little over 3.85V.
Another safest option would be to look for a 3.7V battery charger (it is a voltage common to many li-ion batteries), but if you do not put an ammeter, do it for short periods, although you will not have as many problems as a 5V charger, but maybe it's a bit short, and do not charge the battery a lot.
Eye, if you're not sure do not do anything, as I said the battery may explode. Check that it does not get hot and that it does not inflate and make no mistake with the polarity.
Greetings.
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To be honest i never tried to charge this battery at night. Should i still try? My main battery has 2.7V or something like that, maybe it got discharged when i was talking and i had 1% battery.