So, i've been using stock charger and getting 1200-1400 mAh charging rate. I tried samsung adaptive charger and got a constant of 2011 mAh charging. That charger supports 5V/2A as well as 9V/1.67A fast charge. Will this cause any harm to device with stocl kernel. FYI, It provides 2500 mAh with radon kernel.(QC enabled).
As long as it's the kernel's default max current, you don't need to worry.
Related
Does anyone know anything about charging the battery using a dedicated battery charger?
Our battery is rated 1500mAh at 3.7V. That is basically a 1S configuration type cell. i.e. max charge voltage of 4.2
1. Can I use 2 alligator clips and hook this battery up to my "dedicated charger"?
2. Can I charge it at 1.5AH so that it will fully charge in about 1hr?
BTW, I am using a IMAX B6 charger.
i'm reading different opinions about this when i searched through the xda forums and on google.
i'm using the same custom rom and kernel for about a week now. a few days ago, i charged purely on wall socket. left overnight, my battery lost only 2%.
last night, i charged my phone when it was about 30%. i charged using usb up to 85%, then i finished it off on AC up to a 100%. my overnight loss went up to 5% (i did not install any additional apk, or change my setcpu profiles, etc).
there are no topics on this, specifically for SGS2. mostly are from HTC threads.
from what i learned, usb's only pour out about half of what AC's can give (500 mah vs 1,000 mah). does that translate into a poorer batt life?
How you charge your phone, usb vs AC will not effect the battery life, 100% is 100%, it will just charge slower via usb.
Sent from my GT-I9100 using xda premium
I have noticed something similar with my captivate.I would guess that when you use the wall charger with 1amp the battery gets more of a charge than when you use a usb charger at .5amps. 1amp can cause more chemical change in the battery than half an amp.
sent from my Infuse at Tranquility Base.
SGS2 will only let 650mA into the battery, AFAIK it's hardware restricted to do this. Wall charger will charge faster, but only slightly.
I see no difference and 2% to 5% is within a tolerable variation of overnight drain .
Its all the same electricity .
jje
Sticks02 said:
SGS2 will only let 650mA into the battery, AFAIK it's hardware restricted to do this. Wall charger will charge faster, but only slightly.
Click to expand...
Click to collapse
Firmware, actually, and the phone determines how much it will draw based on the resistance between the two USB data pins. If the resistance is < 200 ohms, it assumes it's plugged into an AC charger, and will draw up to 650 mA. Otherwise, it assumes it's plugged into a PC's USB 2.0 port, and will draw up to 450 mA, just under the 500 mA that a USB 2.0 port is supposed to provide, per the USB 2.0 spec.
Since it's firmware, it should be possible to change the current draw by re-compiling the kernel sources with new values. Note that you don't want to go too high on the charging current, as that could cause overheating or fire.
Sticks02 said:
SGS2 will only let 650mA into the battery, AFAIK it's hardware restricted to do this. Wall charger will charge faster, but only slightly.
Click to expand...
Click to collapse
And how about charging a spare battery using a separate battery charger?
I have two batteries and I never charge them plugging the phone, just using a spare battery charger. Does it have any negative effect on the batteries' lifespan?
dont know what happened but my phone is being charged with ac adapter as same speed as usb.(more than 4 hours) :S
I have a USB charger capable of delivering 1A.
Even with the data pins shorted (phone side), it still seems to draw only 350 mA :-(
Any ideas?
Known made-up cables that do work?
Hey guys
I was wondering , since it takes this phone over 3 hours to fully charge... If I buy a Nokia charger with an output of 1.2 mah ,would it take a shorter time for this phone to charge? Its own charger has 0.7 mah output..
No. SGS2 has a capped charge rate of 650 as far as I know.
----------------------
GTI9100 KK5
yes but it might get hot. i used to charge with playbook's charger all was well. but now i use the samsung S2 charger. but i never checked if it was charging faster
Ok, thank you both
atifsh said:
yes but it might get hot. i used to charge with playbook's charger all was well. but now i use the samsung S2 charger. but i never checked if it was charging faster
Click to expand...
Click to collapse
Charging is controlled by the phone only and varies depending on whether it detects a USB data link or not. And the battery temperature.
So, provided the charger is rated at 700mA or greater, the phone will charge at the fastest rate it sets. On USB, the charge rate is lower. USB 2 ports have a maximum of 500mA output... and if the phone is on, the charge rate is often lowered further.
I use an iPAD2 charger for convenience, which is rated at 2A. The phone charges fine, but only at the same rate as the stock Samsung charger.
LenAsh said:
Charging is controlled by the phone only and varies depending on whether it detects a USB data link or not. And the battery temperature.
So, provided the charger is rated at 700mA or greater, the phone will charge at the fastest rate it sets. On USB, the charge rate is lower. USB 2 ports have a maximum of 500mA output... and if the phone is on, the charge rate is often lowered further.
I use an iPAD2 charger for convenience, which is rated at 2A. The phone charges fine, but only at the same rate as the stock Samsung charger.
Click to expand...
Click to collapse
thanks for the info dont know about S2 but i know few brands allow that. blackberry is one of them, using playbook charger on their phones charge them faster but battery gets hot.
I cant find the exact post to link it for you but I'm sure the devs had a discussion about it in the siyah dev thread.
Mains capped at 600 by the device.
http://forum.xda-developers.com/showthread.php?t=1263838&page=1406
----------------------
GTI9100 KK5
Well, I needed more actual facts than technical stuff. So the idea is not to buy the nokia charger cause the sgs2 wont charge faater. This sucks. HTC evo 3d battery charges to full in abou 1,5 hours and it lasts enough so...I really dont understand samsung
In my ROM there is an option to enable fast charging. If you enable that, a charger with a higher mAh will make sense.
Probably the heat issue is the main reason for not implementing a higher charge rate. Battery degradation world be another.
Sent from my GT-I9100 using xda premium
I don't think you should use a bigger charger with a higher voltage to charge your phone, the battery for your SGS2 might not be able to handle the amount of voltage from the charger
MacBreQ said:
In my ROM there is an option to enable fast charging. If you enable that, a charger with a higher mAh will make sense.
Click to expand...
Click to collapse
Thanks but I prefer stock roms
I need to charge my hox+ (charging time 3 hr) with any rapid charger
Galaxy S4 charger» Output: 5V»2A
Htc charger» Output: 5V»1A
Can i charge with S4 charger or any rapid charger(high A) or there is a risk?
I need most rapidly mod for charging if there?
Moudy_moon said:
I need to charge my hox+ (charging time 3 hr) with any rapid charger
Galaxy S4 charger» Output: 5V»2A
Htc charger» Output: 5V»1A
Can i charge with S4 charger or any rapid charger(high A) or there is a risk?
I need most rapidly mod for charging if there?
Click to expand...
Click to collapse
The higher mA the faster the battery is charged.However this is not recommended due to the battery life will be affected as well.
In addition :
Your phone would get hotter, and this may damage your mainboard.
Long term usage will affect battery life span .
EDIT: If you have one of those chargers , try charging with it. If your phone gets hot, unplug it as it can damage your device.
Normally, the device (phone) regulates the current while you charge the battery. 5V/1A only says that the charger can supply a maximum of 1A.
Hey, is it safe to use original 45W Samsung charger daily? Got it for nice price ($25) from friend's shop.
I read somewhere it's not recommend to use 45W. Also I read S20+ supports 25W only.
Thank you for answers.
It is safe to use the charger but I am not sure if it will be able to charge it at 25W also.
So if I will use 45W, charging will be the same as with original charger?
Tried it, remaining time to fully charged is showing the same with both chargers.
RenikSK said:
So if I will use 45W, charging will be the same as with original charger?
Tried it, remaining time to fully charged is showing the same with both chargers.
Click to expand...
Click to collapse
I have the 45w charger. Charging speed depends on the phone temperature. The phone slows down the charging when phone temperature gets high. It's marginally faster than the one that came with the phone. But it's super fast charging for the first 30 minutes or so compared to our of the box.
So i use the 45w charger at office when I need to charge the phone fast and seldom fully charge it as I would unplug it and go somewhere else.
At home I just plug in the charger that came with the phone for overnight charging. Perhaps not the best to leave it charging overnight but I need a full battery next day.
Even if the charger provides 45w, the phone will only pull what is needed from the charger itself. So if the phone limits itself to 25w, then thats all it will use from the charge available.
Equally, if the charge provided is lower than the maximum the phone can use (i.e. 25w phone but 15w charger), then it will use the maximum from the charge available.
Chargers these days offer a multitude of different voltages and amp ratings, but they are smart and will only send what is requested by the device that is plugged in so there's no chance of accidental over-voltage.
I too have the 45W samsung travel charger and did a comparison on power draw compared to the 25W charger that is included with the phone. I used both the USB C cable that came with the phone (Black) and the thicker cable that came with the 45W charger (White), while measuring the power draw using a power consumption meter that was plugged into the wall between the charger and the outlet. My phone was at 40% charge when I tested. The results are shocking.
Included 25W charger
Phone's Black cable - 27.9 W
Charger's White cable - 27.2 W
Samsung 45W travel charger
Phone's Black cable - 29.7 W
Charger's White cable - 31.3 W
The similar power draw explains the charging speed difference of 10 minutes which many reviewers on youtube have observed. Taking another step, I have read that the S20 Ultra requires the charger to support PPS to achieve (10V, 4.5A) in order to charge at 45W. So why does the 45W travel charger only support (15V, 3A), (20V, 2.25A), (3.3-11V, 4.05A), (3.3-16V, 2.8A) and (3.3-21V, 2.1A)? Even the best case scenario would be to use the (3.3-11V, 4.05A) PPS profile and set it to (10V, 4.05A) to give only 40.5W. I smell a rat.
Interesting. I have also measured power draw but my results are bit diferent.
45W charger was getting up to 41W for 4 mins.
On overall charging speed 0-100% the diference is 10mins, but after charging 20mins I'm getting 54% on 45W and 37% on stock.
17% in 20mins it's a lot of difference.
45W is slowing down up to 1A after that to cool down the phone. 25w have similar behaviour.
Baseus 65W PPS chargers triggers SFC 2.0 but it takes more than 2h to charge fully. Amperage is oscilating as hell.
my Huawei 65w laptop Charger charges my S20U much quicker than the 25w charger i find...
krogoth said:
Interesting. I have also measured power draw but my results are bit diferent.
45W charger was getting up to 41W for 4 mins.
On overall charging speed 0-100% the diference is 10mins, but after charging 20mins I'm getting 54% on 45W and 37% on stock.
17% in 20mins it's a lot of difference.
45W is slowing down up to 1A after that to cool down the phone. 25w have similar behaviour.
Baseus 65W PPS chargers triggers SFC 2.0 but it takes more than 2h to charge fully. Amperage is oscilating as hell.
Click to expand...
Click to collapse
I have been continuously testing and found that if your phone has less than 30% battery and the battery temperature is under 33 ºC, it will charge at 40W. After that, it drops to 30W for the remainder of the charge and then drop again to 20W when the battery is above 80%.
Next step is to find a good battery data logging app which logs battery percentage, battery temperature, charging current and time. Surprising to find that not many apps can do this. Even the Battery Charging Monitor app doesn't log all that data.