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Hello,
I have a Nexus 7 (2013) and one of the kernels available incorporates THIS Kernel tweak. (long story short, it essentially keeps the devices from charging above a specified voltage, resulting in the battery ceasing charge at a certain percentage...in my case 82%...thus increasing the longevity of the battery over the lifetime of the device.)
I would like to develop/build a Kernel for the G2 that does something similar, however the link I posted is specific to the charger driver of the Nexus 7. Can anyone offer any insight on the charger driver/capabilities for the G2?
Hi Guys, ive been part of the HTC One X scene and now i am getting an s4, question is i hate Touchwiz with a passion!! so i want to use an AOSP rom, my question is what is the easiest one to use and are modded kernals a good idea with this phone? regards,
I use Danvdh's GPE ROM. It basically converts your existing S4 into a Google Play Edition S4, but with some subtle enhancements. Being a GPE ROM, it also has the advantage of using Samsung libraries for its hardware, which makes it run more smoothly than the AOSP alternatives that use reverse engineered drivers.
I had been leaning to that Rom, what about kernels any that actually make a noticeable difference? I keep seeing fast charge pop up ?
Sent from my HTC One using XDA Free mobile app
Use the Googy Max kernel that's included, or use the more up-to-date Hulk kernel variant of Googy Max. Alucard's kernel reportedly has a battery drain issue and the stock kernel introduces random reboots. As for fast charging, I've not gone through every post in that thread so if there is a fast charge option I'm not aware of it.
Is there any idiots guide to do it? Lok
Sent from my HTC One using XDA Free mobile app
An idiot's guide to install the ROM? Root, install a custom recovery (TWRP recommended here), and install the ROM through recovery. The various kernels and ROM options are all in the zip, as it uses Aroma installer.
Easiest way to root? Still on kitkat if that makes a difference
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CF-Autoroot. There should be a thread for it in S4 General.
I actually find the CM12 optimzed builds to be a bit snappier than GPE. But GPE is more stable and bug free. I had several problems with the latest CM12 builds.
You can always change roms afterwards. But I keep coming back to GPE The only downside is that there is no ktoonsez kernel for GPE 5.0.
It's an awesome kernel and the only one, that I know of, to offer GPU Overclocking.
Alucard and Googy-Max kernels are great too.
Fast charge is designed for USB. The USB current is lower than the AC current. This means that the phone takes a lot longer to charge via USB.
Fast charge substitutes AC to USB. Meaning that it will charge via USB with the same current as AC.
I was thinking of the rapid charging devices like the Nexus 6 have, where you get 50% power in roughly a half hour. Glad someone around here can keep me straight.
Strephon Alkhalikoi said:
I was thinking of the rapid charging devices like the Nexus 6 have, where you get 50% power in roughly a half hour. Glad someone around here can keep me straight.
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Well, it was mainly done to increase charging speed via USB, I think.
But you can also increase the current on AC charger. Which means it charges faster, similar to what you said.
I don't know what the default is on touchwiz stock kernel, but Googy set it at 1450 mAh for AC.
Alucard kernel comes with 1900 mAh for AC. Which means it charges relatively faster. Look at it as "Overclocking" your charger
But it may also reduce the battery's life.
Googy and Hulk allow you to set the AC and USB voltages, so I left USB alone but set AC to 1900. Its unlikely that battery life will be adversely affected by ramping up the amperage of the charging circuit, unless the battery gets exceptionally hot (it doesn't) in the process. The stock charger won't be damaged by doing this as the charger is rated for 2A in the first place. Third party chargers, as long as they're rated for 2A, won't be damaged. Smaller chargers will eventually fry.
I leave it at 1450. I'm in no hurry. Especially when I'm gaming
Im currently running the latest build on AnteriesOne optimised CM12.1 ROM on my i9505, in STweaks the defualt mA input is set to 1900mA but if i remember correctly the stock voltage is 1000, it charges SUPER quick so i set it to 1450mA but im still worried having it on this voltage on what i believe to be a 2 year old battery, which is in good health id say 90% health status.
You developers sure you know what your doing?? you dont want peoples battery exploding when they accept a phone call do they... i9505 exploding batterys is becoming popular and now they're increasing the voltage on custom roms.
I never heard of an exploding battery on the S4. And the 1900 is default for the S4 charger if i'm not mistaken. So don't worry.
Your S4 can take it upto 1900mAh. But don't increase voltage or else your phone might explode
Sent from my GT-I9505
Hi,
I have a rooted G530R4 Grand Prime with latest stock 5.1.1 ROM. I would like to know the easiest way to enable fast charge support, all the APK app's require a "modded Kernel". I am not familiar with Linux but I am an ex IT professional who learned MS-DOS back when Windows 3.11 was the latest and greatest so command line doesn't scare me.
I would also be interested in enabling overclocking past 1190mhz but this is of virtually no practical use to me whereas a 2.1amp fast charge capability is of great practical benefit.
The Grand Prime comes with a 2600mah battery so using the conservative rule of "1C" (charge amperage being equal to capacity in amp-hour) using a 2.1amp charge current should be well within lithium ion/polymer safety margins.
****Some new advanced high current specialty lithium polymer batteries can safely be charged at 8C (that's 1/8th of an hour to fully charge) but don't get any ideas on smartphone batteries as smartphones have an extremely low discharge rate whereas high current applications often require batteries designed to be discharged in as little as 2 minutes, such as in performance radio controlled airplanes. It is unlikely for a high current capable battery to be marketed for a smartphone.
Anyone know how to help me with this fast-charge thing? I would really like to enable this feature, chipset supports it on the HW level.
Ara Tidwell said:
Hi,
I have a rooted G530R4 Grand Prime with latest stock 5.1.1 ROM. I would like to know the easiest way to enable fast charge support, all the APK app's require a "modded Kernel". I am not familiar with Linux but I am an ex IT professional who learned MS-DOS back when Windows 3.11 was the latest and greatest so command line doesn't scare me.
I would also be interested in enabling overclocking past 1190mhz but this is of virtually no practical use to me whereas a 2.1amp fast charge capability is of great practical benefit.
The Grand Prime comes with a 2600mah battery so using the conservative rule of "1C" (charge amperage being equal to capacity in amp-hour) using a 2.1amp charge current should be well within lithium ion/polymer safety margins.
****Some new advanced high current specialty lithium polymer batteries can safely be charged at 8C (that's 1/8th of an hour to fully charge) but don't get any ideas on smartphone batteries as smartphones have an extremely low discharge rate whereas high current applications often require batteries designed to be discharged in as little as 2 minutes, such as in performance radio controlled airplanes. It is unlikely for a high current capable battery to be marketed for a smartphone.
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Click to collapse
You would need to compile the kernel to that and as far as i know its a tough job
Hello guys.Today i had my Redmi Note 3 Pro repaired , because a chip/module (that is responsible for charging) burnt down.
To avoid this:
1.Lower your charging rate (stock 2000 mAh).And yes , i was using stock rate.
2.Use only original charging adapter.And yes i was using charger and cable out of the box.
3.Try to avoid gaming while charging ,because the phone heats up so hard, especially screen.
I was using Resurrection Remix OS ,but im not saying it is responsible for this cause.
And here is some additional information from georgek1 on miui forums
For those who don't know here are some things about QC and Xiaomi Redmi series.
Quick Charge (QC) is a patented technology by Qualcomm (the company behind the Snapdragons processors) which allows phones to be charged faster. Quick Charge comes in 3 versions (time values are for a 4050mAh battery) :
v1.0, released 2013, using 2.0A -> full charge in 2.43 hours
v2.0, released 2015, using 3.6A -> full charge in 1.32 hours
v3.0, released 2016, using 4.0A -> full charge in 1.215 hours
* QC 2 has backward compatibility with QC 1 and QC 3 has backward compatibility with QC 2 and 1.
Redmi Note 3 currently implements QC 1 or a similar Xiaomi-made technology that charges phone in 2A.
Quick Charge (in general) implementation requires a few things:
A processor capable of Quick Charge technology
An extra electronic circuit on the mobile motherboard
A Quick Charge capable/compatible charger + a good cable
Drivers (software) on Android ROM kernel
A license fee that is paid for every device sold with Quick Charge technology enabled
The most important thing is #1, the processor as is the base (heart) of the system. Redmi Note 3 Pro with Snapdragon 650 supports Quick Charge 3.0 as the 650 snapdragon is capable of this technology. But let's see all the requirements:
Snapdragon 650 supports QC 3 = OK
Extra circuit on motherboard = UNKNOWN (probably yes)
QC charger and cable = NO
Drivers on kernel = NO
License fee paid = NO
* Some people say about batteries. QC doesn't require any special designed batteries. It works with all batteries on the market. That is it's goa,l to implement faster charging with current battery technology.
OK now, drivers are missing 100% and it has already confirmed by author or RADON kernel (@Umang96). His words:
this kernel at present does not use any charging driver hacks, I did try adding charging hacks in past but they did not work well and seemed ineffective, thats why I decided to keep charging drivers stock (same as xiaomi). We still get 1700-2000mA charging rate with stock charger which is good enough. Also, I don't recommend anyone to buy QC2.0/turbo/fast chargers, I use the stock charger and cable only.
Although QC has been originally enabled by @Umang96 in RADON kernel, he has later remove it. That makes me feel that QC 3 or 2 implementation in Redmi Note 3 is not possible due to software/kernel (#4) missing drivers or due to lack of the extra circuit required in hardware level (#2).
Why Redmi note doesn't have QC by default? Here is my guess:
The extra hardware circuit on motherboard may cost around $1
The QC charger will cost like more because it includes a) an extra circuit inside the charger $1 + b) license fee paid to Qualcomm for every charger $3
At least $3-5 fee for Qualcomm for every device sold with QC enabled.
That makes an extra $7-10 on factory level cost. An extra $10 for million devices is a big number. Also, that factory costs will lead to an extra $20 value on the consumer which makes the phone more expensive for its category.
Also my final guess is that Xiaomi wants extra things enabled for "Mi" (the good series) of phones in order to separate them from the cheaper "Redmi" series phones.
It would be very nice if QC-enabled processor phones which has QC disabled by factory, to have an option (like an application) which will allow users to pay the licensee fee and enable the QC option. I would be more than happy to pay $10 even $15 with my credit card to enable QC in my phone.
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Have a good time using this budget masterpiece!
QC2 and QC3 are 9V 1.5A usually, there is no 3.6A or 4A.
Latest radon supports QC.
QC works but it's not properly slowing down with usage and instead going up, that's why your charging port got damaged.
If using QC phone should be idle or used very lightly, if you plan on using the phone you need to charge with non QC charger.
Your answer is in your post itself:
Snapdragon 650 supports QC 3 = OK
Extra circuit on motherboard = UNKNOWN (probably yes)
QC charger and cable = YES ( I have QC 3.0 cable and charger and most people use it too)
Drivers on kernel = YES (use custom kernels to support it)
License fee paid = NO ( Does it really matter as an end customer? )
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Click to collapse
I've using QC from the day it was supported by the custom kernels like Radon and others. So far, there are no issues with the charging etc. My RN3 is 13-14 months old now as I got it the day it was launched.
End story: it's just bad luck.
Dziugsas said:
Hello guys.Today i had my Redmi Note 3 Pro repaired , because a chip/module (that is responsible for charging) burnt down.
To avoid this:
1.Lower your charging rate (stock 2000 mAh).And yes , i was using stock rate.
2.Use only original charging adapter.And yes i was using charger and cable out of the box.
3.Try to avoid gaming while charging ,because the phone heats up so hard, especially screen.
I was using Resurrection Remix OS ,but im not saying it is responsible for this cause.
And here is some additional information from georgek1 on miui forums
Have a good time using this budget masterpiece!
Click to expand...
Click to collapse
This is what I have tried to say from the beginning. Now you explained it perfectly! Thanks.