Hi all!
As you probably know in most cases the standard maximum voltage of a Li-Ion or Li-Pol battery is 4200 mV, and according to the Theory, it's not recommended to exceed this limit because it dramatically shortens a battery life.
I found out that when my HTC ONE is plugged to a charger and fully charged the battery shows its voltage about 4330-4336 mV! One may guess it's because the device is connected to the charger so I unplug it and the voltage drops to about 4250-4260 mV BUT anyway it's more then the standard limit 4200 mV.
I would I ask you to check your devices what the voltage do they show when plugged and fully charged and when unplugged of the charger?
I just wonder to know is it normal and there is no trouble or I've got a defective device with a not properly working battery controller.
Thanks for response in advance.
PS To see a battery status dial *#*#4636#*#*
The nominal voltage of LiPo batteries has recently moved from 3.7 to 3.8V. I suspect HTC has managed to get the charge profile correct. Don't place too much emphasis on what you read from some guy on the internet.
Recent batteries from, for example, HTC ONE X+ also have nominal voltage 3800 mV but nevertheless they stop charging at 4200.
ninelo said:
Hi all!
As you probably know in most cases the standard maximum voltage of a Li-Ion or Li-Pol battery is 4200 mV, and according to the Theory, it's not recommended to exceed this limit because it dramatically shortens a battery life.
I found out that when my HTC ONE is plugged to a charger and fully charged the battery shows its voltage about 4330-4336 mV! One may guess it's because the device is connected to the charger so I unplug it and the voltage drops to about 4250-4260 mV BUT anyway it's more then the standard limit 4200 mV.
I would I ask you to check your devices what the voltage do they show when plugged and fully charged and when unplugged of the charger?
I just wonder to know is it normal and there is no trouble or I've got a defective device with a not properly working battery controller.
Thanks for response in advance.
PS To see a battery status dial *#*#4636#*#*
Click to expand...
Click to collapse
The new chemistry battery in this phone means it should hit around 4300 mV fully charged.
I recently ran an app called Ampere and it says my battery is charging at 3.962 volts at 1030 M.A. Shouldn't it charge around 2000 M.A.? Was wondering if the app is accurate or what are some of your charge rates
Using the Oem charger and cable
My phone charges (while off) from completely dead to fully charged in about an hour and 15 minutes.
Something is wrong with your cable/charger. The official fast charger will quickly charge to about 85% then trickle charge afterwards to 100%
ihateu said:
I recently ran an app called Ampere and it says my battery is charging at 3.962 volts at 1030 M.A. Shouldn't it charge around 2000 M.A.? Was wondering if the app is accurate or what are some of your charge rates
Using the Oem charger and cable
Click to expand...
Click to collapse
The maximum amperage is determined by which charger you are using, what charging mode you are in, and how full the battery is.
If you are using the Note 4 OEM charger with fast charge capability, take a close look at it. You'll find that in fast charge mode, the maximum amperage is 1.67 A, not 2 A. So, 2 A isn't even possible in a properly functioning OEM charger in fast charge mode.
You will also see that, with fast charge mode turned off, the maximum amperage is 2.0.
Confused? Many are, because we have become used to the notion that, in order to increase charging speed, the amperage needs to be increased. And that is true, so long as the voltage remains the same.
But, when you look closely at the OEM charger, you'll notice that in fast mode, the voltage is 9 V. In regular charge mode, it is 5 V. So, the charger achieves faster charging by increasing voltage, not amperage. Why does this work?
Math.
Power (in watts) = Amperage x Voltage.
In regular charge mode, 5V x 2A = 10 watts of power to the battery. Not bad.
But, in fast charge mode, it's 9V x 1.67A = 15.03 watts, a 50% increase in power to the battery.
Why your battery is pulling 1.03A @ 3.962V is not really clear without more information. As mentioned previously, there are various reasons for your scenario, but in no case can you achieve 2A input to the phone when in fast charge mode.
Try discharging your battery to, say, 20%. Then, look at your numbers again. You'll discover that, as the battery's charge increases, the amperage will decrease. 4V and a little over 1A is what I get when my battery is about 75% full, and it decreases rapidly from there.
Hello,
I've seen that the battery max voltage for P9 is at 4.4V (rated voltage at 3.82). However, at 100% charge, my phone is at around 4.36V.
Just wondering if you guys see the same. I though this has protection level of about ~92% capacity of max voltage.
Thanks!
Mine is at 4,35 i think that the 4.4 is an indicative value.
:EDITE: 4,35 at 100% under AC charging with stock 2.0 A, Switching Power Adaptor
Options have 50 char limit.. So here are longer descriptions:
- Yes. Fast charging is always ON
- Never. My battery lasts the whole day and I (slowly) charge it overnight. And I am either not in a hurry or good at planning my charging time
- Sometimes. I turn it ON only when I need it
- I don't care or know anything about it. I use default settings
Is there an option to turn it off? I haven't seen it. But anyway i use my old s3 charger for all my devices. I don't trust fast chargers. They kill batteries.
Slow charge really isn't that slow.
Airtioteclint said:
Is there an option to turn it off? I haven't seen it. But anyway i use my old s3 charger for all my devices. I don't trust fast chargers. They kill batteries.
Slow charge really isn't that slow.
Click to expand...
Click to collapse
Regarding fast changing killing batteries the charger provides a voltage to the phone, the power management controller monitors battery voltage and temperature , I would assume these have limits and will take control if outside of range in a similar way to throttling cpu frequencies when it gets too hot.
Under battery settings
paul_59 said:
Regarding fast changing killing batteries the charger provides a voltage to the phone, the power management controller monitors battery voltage and temperature , I would assume these have limits and will take control if outside of range in a similar way to throttling cpu frequencies when it gets too hot.
Under battery settings
Click to expand...
Click to collapse
Where did you find this setting?
I'm using "bad" cables for show charging but being able to limit the current and the charging state without root, like on Sony smartphones, would be great
Airtioteclint said:
Is there an option to turn it off? I haven't seen it. But anyway i use my old s3 charger for all my devices. I don't trust fast chargers. They kill batteries.
Slow charge really isn't that slow.
Click to expand...
Click to collapse
The option is in Device Care > Battery > Settings
Personally I leave fast charge turned on and use a bunch of different chargers with the phone, I just have Battery charge limit set to stop charging at either 80% or 90% (depending on when I think I'll be next able to charge) and try to start changing between 20% and 40%.
Caffeineshock said:
Where did you find this setting?
I'm using "bad" cables for show charging but being able to limit the current and the charging state without root, like on Sony smartphones, would be great
Click to expand...
Click to collapse
Using "bad" or cheap cables is really not the best idea, they often don't meet the USB C spec and could damage your device. Try to stick to high quality but low current chargers (Like old phone chargers) or disable Fast charging as previously mentioned.
willhemmens said:
The option is in Device Care > Battery > Settings
Personally I leave fast charge turned on and use a bunch of different chargers with the phone, I just have Battery charge limit set to stop charging at either 80% or 90% (depending on when I think I'll be next able to charge) and try to start changing between 20% and 40%.
Using "bad" or cheap cables is really not the best idea, they often don't meet the USB C spec and could damage your device. Try to stick to high quality but low current chargers (Like old phone chargers) or disable Fast charging as previously mentioned.
Click to expand...
Click to collapse
Strange. My n9600 doesn't have that. I got device maintenance and there's some battery saving options in there but no fast charge option. Oh well the s3 charger works for me.
Edit - nvm found it.
Airtioteclint said:
Strange. My n9600 doesn't have that. I got device maintenance and there's some battery saving options in there but no fast charge option. Oh well the s3 charger works for me.
Click to expand...
Click to collapse
Under the battery menu press the three dots in the upper right corner and select advanced settings. As for the poll I turn mine off.
Misterxtc said:
Under the battery menu press the three dots in the upper right corner and select advanced settings. As for the poll I turn mine off.
Click to expand...
Click to collapse
Just found it thanks.
willhemmens said:
The option is in Device Care > Battery > Settings
Personally I leave fast charge turned on and use a bunch of different chargers with the phone, I just have Battery charge limit set to stop charging at either 80% or 90% (depending on when I think I'll be next able to charge) and try to start changing between 20% and 40%.
Using "bad" or cheap cables is really not the best idea, they often don't meet the USB C spec and could damage your device. Try to stick to high quality but low current chargers (Like old phone chargers) or disable Fast charging as previously mentioned.
Click to expand...
Click to collapse
Thanks finding this option (Samsung UI sux)
Now you're making me ask more questions XD
You have a battery charge limit on an unrooted note 9? How?
Caffeineshock said:
Thanks finding this option (Samsung UI sux)
Now you're making me ask more questions XD
You have a battery charge limit on an unrooted note 9? How?
Click to expand...
Click to collapse
It's rooted. I did come up with a solution using the Automate app and a smart plug a little while back but only worked if you're charging from the charger that's plugged into the smart plug.
Yeah okay this 2 ways are well known
Thanks for the fast reply ^^
I was already questioning my eyesight. You know, Samsung UI and not finding an specific setting in menu could happen even after years I think ^^
I charge when I want, as fast as I want. I leave it on the charger overnight, everynight. Have done it this way for years and will continue to do so. Never seen I'll side effects from doing it this way. I have too much of a life to monitor my charging speed and make sure I'm next to the charger to stop it at 80%. I like waking up to 100% and using it as I see fit through the day. YMMV
Fast charging is set to ON by default straight out of the box. So youll think samsung has taken this to consideration.
Personally, i keep this off when charging with the orginal charger. I have an app called Battery Warner which alerts the user when over a set %. or if rooted it will stop charging and enable charging when it is under a %.
If i have plans to go out and the battery is low then ill throw it on fast charge.
ciaox said:
Fast charging is set to ON by default straight out of the box. So youll think samsung has taken this to consideration.
Click to expand...
Click to collapse
My 2 cents:
I think Samsung doesn't care much if battery will remain healthy after 2 years. They care now to sell as much Notes as possible with the "Fast charging" marketing slogan.
That's why it's ON by default.
I never use fast charging as it will provide more harm than benefits to the battery health + I use a magisk module (Advanced Charging Controller) which have cooling mechanism and voltage monitoring and also battery temperature monitoring and this will also greatly increase the battery life on long term use.... since we got a non replaceable battery
Since I rooted my Note 9 on day 1 (I don't care about warranty) the first thing I did is I used Advanced Charging Controller and keeping my battery healthy for as long as maybe 4~6 years of usage
paul_59 said:
Regarding fast changing killing batteries the charger provides a voltage to the phone, the power management controller monitors battery voltage and temperature , I would assume these have limits and will take control if outside of range in a similar way to throttling cpu frequencies when it gets too hot.
Under battery settings
Click to expand...
Click to collapse
It does, but still the degradation is higher vs no fast charge.
on the topic: The first thing I did on my s7e was to turn off fast charging - the battery after 2.5 years is in a really great shape even after every day charging. The same I did on my note 9. Will use fast charge only if I am in real hurry and need a lot of battery fast. If the phone is changed every 2 year tho, it's not that big of a deal and everyone decides for himself.
Otherwise in most cases it's not needed to charge overnight as 0-100 without fast charging is 2h-2h and 10 minutes. As most charge from ~20%-100% it will take 1:40 to charge the phone. The overnight charge is if the phone is charging from the PC USB - the best way for battery longevity, but not really worth the hassle vs normal charger charging.
According to poll results: more than a half (or 2/3 depending how you will count) uses fast charging.
No, slow on cable and fast charge for wireless!
Photo's by Sully using SM-N960U
The high temperature is an enemy of the li-ion battery. The normal load on the cable drives the temperature to 30.5C. Fast charging on the cable tray at 34.5C. Fast wireless charge up to 37.8C. What better?
Never have and never will use "fast" cable charging. I dont wireless charge either.
Sent from my SM-N960U1 using Tapatalk
Why does it show 3.4A charging current when the charger can supply only 3A maximum?
Anyone?
Let me start by saying: I don't really know.
But I can speculate a bit about it...
Who knows how the app gets that number? I don't think the OS reports the charging current. The app can periodically measure how full the battery is. Either as reported by the OS or calculate it from battery voltage.
So you could say that if you gain 1000mAh in 1 hour, you charge at a rate of 1A. If you charge at 3410mA with a voltage across the battery of 4.316V, that's 14.7W. If your charger delivers 14.7W at 5V, that's just under 3A. So it all works out.
Another possibility is this: In order to calculate the gained charge from the voltage or from the reported percentage, you have to know the total maximum capacity of the battery. This device reports 4000mAh, but people say it may be less. If the battery is smaller than it says it is, then it would fill up faster than expected, so the app would calculate a higher current.
Again, I don't really know, but these are my two theories.
rounakr94 said:
Why does it show 3.4A charging current when the charger can supply only 3A maximum?
Click to expand...
Click to collapse
I'd say they just rounded down. A car with a healthy battery might be 12.7v or even 13v when on, even though it's rated to be 12v.
Guys rented a usb current meter and it reads 9V 2A when the device shows 5V 3.5a. So essentially the phone is displaying the 9v as 5v so increasing the amperage