To maximize your battery, please add a setcpu profile for charging.
Set the frequency as low as it can when charging.
Reason:
The battery will stop charging when it gets to a certain positive voltage input.
If we set the frequency high, the battery will stop earlier as the consume it bigger than low frequency.
Perhaps you can further explain this. Is the voltage measured at the battery? If so, how does the battery drain affect that measurement? Does changing the CPU voltages affect this? Is this an effort to increase battery capacity? Or increase charge rate?
Tubes6al4v said:
Perhaps you can further explain this. Is the voltage measured at the battery? If so, how does the battery drain affect that measurement? Does changing the CPU voltages affect this? Is this an effort to increase battery capacity? Or increase charge rate?
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The voltage is by the formula, Input - output.
If it is positive, the battery keep charging.
However, not all positive voltage keeps charging as at some very low voltage the battery will stop charging.
So, keep the voltage as high as it can to longest the charging cycle, and you phone can get highest capacity.
Related
Has anyone had this problem, er... fortune? My BA seems to actually increase its battery life when I leave on idle. I have it underclocked to -20% when idle and overclocked to +33% (Full overclock) when cpu load is over 50%. So while in use the battery drains very quickly, but when it is left on idle or when I suspend all programs on my phone I actually gain battery life of about 4-8% per hour. Is this a normal thing?
I've never had that happen to me, it sounds like a dodgy battery metre. But I’m not sure. Very strange.
My BA behaves in a similar-but-different manner: when charging, the battery shows a decreasing charge... and when it reaches 0, jumps back to whatever the real charge is. So I'm guessing a faulty battery meter as well.
Is there anyway to have the voltage lower at higher charges? Because my voltage starts at 4.1V and slowly drops down to 3.7V once I hit around 50% battery, is there a way to start the voltage at 3.7V and just keep it at 3.7V the whole time my battery is on? Or keep it around 3.7V the whole time it's on.
ms79723 said:
Is there anyway to have the voltage lower at higher charges? Because my voltage starts at 4.1V and slowly drops down to 3.7V once I hit around 50% battery, is there a way to start the voltage at 3.7V and just keep it at 3.7V the whole time my battery is on? Or keep it around 3.7V the whole time it's on.
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Those are characteristics of your battery, and cannot be changed.
The voltages mentioned by kernel developers are those applied to the cpu.
nabbed said:
Those are characteristics of your battery, and cannot be changed.
The voltages mentioned by kernel developers are those applied to the cpu.
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Ah, ok. Thanks
I read up on the "battery issue with the TP2" in the forum and the FAQ.
My phone had several charging cycles and the battery life doesnt seem to improve.
Is there no fix for the battery issue?
I checked the V_MBAT Value in TBattery (pre-installed in Energy Rom), it still shows 3.7V when my phone automatically switches off. Immediately after charging the level is about 4.1V
The Final Discharging Voltage of a Li-Ion Battery is typically a minimum of 2.5V (i would tolerate a security of around 0.3V, but what is this?)
->What is your Battery voltage before the TP2 switches off automatically?
Maybe someone also can answer these questions:
-Does a part of the OS decide to Poweroff the device or does it happen automatically when the battery doesnt delive enough voltage anymore?
-What parameters is the OS using to determine the battery charge level?
So I've noticed my 3xl is crazily boosting power to the phone when charging. I've seen it go all the way charging at 35watts until it reaches 10% then it slows down at 22-25watts until it kind of reaches 25-30% and then it goes to at 15-18watts until it reaches 100% which is lame.
I've read the charger can deliver 65watts and I've used it to charge a laptop which is incredibly fast and it charges my Xiaomi mi pad 4 plus at 22watts.
Why can't Google lock it at somewhere between 25-35watts? How's your charging? Is there any mod/way to charge it more rapidly?
The reason high speed charging cannot be maintained is due to battery physics (or... chemics). When charging battery with high power, you actually stress the battery a lot which will reduce the "total life" of battery. This reduce is (partly) due to the high temperature associated with high current (the battery voltage is pretty fixed around 3.8~4.2V, thus high power=high current) and this high temperature put a lot of stress on battery materials cause shortening of total life.
Also, if keep high power charging too long, the battery will have risk of explosion (for various reasons... High temperature is only one of the them) for example, one of the temporary solution Samsung implemented for Note 7 on fire issue is limiting the charge power, to reduce to risk of catching fire. Big company with a lot at stake like Google usually will not trade safety for anything (there are exceptions.) This is why high speed charging is limited. (sometimes hardware limited for safety reason).
isthatxavier said:
So I've noticed my 3xl is crazily boosting power to the phone when charging... I've read the charger can deliver 65watts and I've used it to charge a laptop which is incredibly fast...?
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65 watts? Not the charger that comes with the phone. Read the output (tiny) label on the stock charger). So maybe you are using a different, badass? USB-C PD charger that supports higher charging rates, but the PD protocols our phones accept are theoretically 18 watts max: [email protected]=18w, [email protected]=15w and legacy [email protected]=10w. You will not see higher than that, and it is regulated by the phone irrespective of the charger you have. The phone's charging amperage curve starts high at very low battery capacity and then tapers off pretty quickly. If your display says "charging rapidly" then you are getting the max rate you can achieve. Hope this helps.
Does fast charging as opposed to normal charging (FC turned off in device care) as our standard means of charging our devices affect battery lifespan in the long run?
All things being equal, I don't think that it does
raul6 said:
All things being equal, I don't think that it does
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Well, thanks. But it's the noticeable heat generated from fast charging that gives me some concerns whereas in normal charging, the heat isn't that much.
Well, no such differences with chargers I use but if there was I would be probably use normal charging
No. Charging doesn't harm your phone
Sent from my SM-N975F using Tapatalk
Its a known fact that high temperatures are bad for lithium ion batteries, fast charging generates more heat than std charging, if there are no adverse effects by fast charging, then it would not be an option, it would be the standard
winol said:
Its a known fact that high temperatures are bad for lithium ion batteries, fast charging generates more heat than std charging, if there are no adverse effects by fast charging, then it would not be an option, it would be the standard
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Fast charging is fine as long as you control the heat; brief 10-30% partial charges generate a modest temp increase. LIs are designed for fast charging.
If your ambient room temp is high simply wrap a damp rag around the phone while charging to cool it.
Monitor bat temp and keep it belong 95 F.
-Avoid full or near full charging-
60-70% is a good range; > 62% is ideal for longevity.
Avoid discharging below about 20%; low voltage isn't as efficiently converted and there's a knee in LI's power curve near that mark; battery % drops more rapidly from 20-6%.
Deep cycle recharges stress the LI much more than short 10 or 20% bursts.
LI's love frequent, short charge cycles in the 40-60% range.
Keep battery >100 F when using, charging or storing!
Avoid using the phone whilst charging; it screws up the charge cycle curve and greatly slows charging!
Same-same if battery temp exceeds 100 F!
25 w brick yields about 2%@ minute charge.