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What would be the max safe charging amps for the Galaxy S4?
Just got a fast portable charger that has three usb outlets for charging @ 5V1.3A, 5V1 amp, & 5V2.1 amp.
Can I use the 2.1 amp to charge my unit without doing damage?
Will the higher the amperage charge faster?.
Will charging at the higher amp reduce the battery life?
The stock charger is 2.1 amp IIRC, (either 2.0 or 2.1) so you'd probably be find with the 2.1 amp one. Yes, higher amperage usually charges faster, and should not reduce battery life.
Your 1.3 amp port will, assuming everything is going to the phone, charge a completely dead battery in two hours. (i.e. if the phone is on, whatever you're doing with it takes away from the charging amperage.)
I think the only issue with higher amperage is that it can get a bit warm. Not enough to damage the battery/phone, but higher amperage means more heat from electrical resistance.
I just noticed that Samsung is treating our batteries in a rude manner: they limit the charging voltage at 4.3v which drastically reduces battery life. I have searched all over the internet and I could not find a way to limit the maximum charging voltage. Is there any way to limit the charging voltage?
I measured the voltage with an intelligent charger, at first I got an overvoltage error as I tried to discharge the battery. I really don't feel comfortable driving around with a bomb in my car as Samsung did have issues with exploding batteries. The ideal voltage must be around 4.1v, maximum 4.2v
So you measured the voltage while it was charging in the phone? Not sure how you hooked up an intelligent charger to the battery while it's in the phone charging by the phone.
they limit the charging voltage at 4.3v which drastically reduces battery life.
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How does it reduce it?
And as far as I know, the charging voltage is 5.3V for the standard charger.
I was measuring the battery outside the phone after 1 day when I got out the battery out of the phone, fully charged.
Someguyfromhell, the USB voltage does not play a role here, the charging electronics is in the phone matters, USB provides, as you say, a fixed voltage.
Inx64, is there perhaps an ingeneering menu concerning the charging process where you can modify charging parameters?
I think you can measure voltage with this code *#0228#
Knowing the voltage from the menu is easy, controlling the charging voltage aparently not so easy, though.
Hello, after sending my s7 edge to warranty for terrible battery (2h Sot at the top after a clean install), i´m questioning if could be the use of wireless charging every night the cause of so fast battery degradation.
In battery health concerned, there is a difference using the wireless charger instead of normal cable charger?
And btw, a good Samsung wireless charger is better than a ordinary one?
I would also like information on this. I have used only wireless charging non samsung charger fast charging disabled in settings. My phone is almost a year old and it out still working well. Just curious about best practice for battery health longevity.
spankmatic22 said:
I would also like information on this. I have used only wireless charging non samsung charger fast charging disabled in settings. My phone is almost a year old and it out still working well. Just curious about best practice for battery health longevity.
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Yes, I'm also have quick charge disabled.
So, what kind of wireless charging? Regular QI, or the newer Fast Wireless chargers? The answer depends on that.
Batteries don't like heat. Batteries heat up when they are charged and discharged because of internal resistance. All those electrons flowing through the battery generate heat. The question is how much is too much.
Rapid charging (like QC 2.0 or 3.0) puts more power into the battery than normal slow charging. More power means more heat. And the closer to full charge the battery is, the more heat is generated. That's why all the rapid charge systems reduce the charging voltage and current as the battery "fills up."
Does wireless charging heat up the battery? For regular "slow" wireless charging, the answer is maybe, maybe not, but probably not enough to notice in any case. There are two things going on with wireless charging. The first is the wireless coils in the charger and phone, the second is the amount of power flowing into the battery. When charging, the coils generate heat. With a well designed phone and charger not a lot, but some. IF the coil gets hot enough, and is close enough to the battery, to heat up the battery, then it could have an effect on battery life. But the output of the wireless coil to the battery is not that great, so the battery won't heat up from the charging itself. Using a standard wireless charger on my Edge, the phone barely gets warm, so I'm not worried about damaging the battery.
With a rapid wireless charger, though, the answer may be different. Samsung's rapid wireless charger puts out enough heat that Samsung put a fan in it. How much of that heat reaches the battery I don't know. But since it's a rapid charger, it's pushing more power into the battery, which WILL make it hotter than a slow charger. So just like a wired rapid charger, it probably does have some impact on battery life
tl;dr version: If you're using a standard (not rapid) wireless charger, don't worry about it. If you're using any kind of rapid charger, only use the rapid charge mode when you really need to.
meyerweb said:
So, what kind of wireless charging? Regular QI, or the newer Fast Wireless chargers? The answer depends on that.
Batteries don't like heat. Batteries heat up when they are charged and discharged because of internal resistance. All those electrons flowing through the battery generate heat. The question is how much is too much.
Rapid charging (like QC 2.0 or 3.0) puts more power into the battery than normal slow charging. More power means more heat. And the closer to full charge the battery is, the more heat is generated. That's why all the rapid charge systems reduce the charging voltage and current as the battery "fills up."
Does wireless charging heat up the battery? For regular "slow" wireless charging, the answer is maybe, maybe not, but probably not enough to notice in any case. There are two things going on with wireless charging. The first is the wireless coils in the charger and phone, the second is the amount of power flowing into the battery. When charging, the coils generate heat. With a well designed phone and charger not a lot, but some. IF the coil gets hot enough, and is close enough to the battery, to heat up the battery, then it could have an effect on battery life. But the output of the wireless coil to the battery is not that great, so the battery won't heat up from the charging itself. Using a standard wireless charger on my Edge, the phone barely gets warm, so I'm not worried about damaging the battery.
With a rapid wireless charger, though, the answer may be different. Samsung's rapid wireless charger puts out enough heat that Samsung put a fan in it. How much of that heat reaches the battery I don't know. But since it's a rapid charger, it's pushing more power into the battery, which WILL make it hotter than a slow charger. So just like a wired rapid charger, it probably does have some impact on battery life
tl;dr version: If you're using a standard (not rapid) wireless charger, don't worry about it. If you're using any kind of rapid charger, only use the rapid charge mode when you really need to.
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That's my opinion too.
The fact is that I'm using a regular/slow wireless charger and my S7 Edge barely gets warm at charging. But even so, my battery must have a problem ( I'm waiting for Samsung report). If it proves that wireless charging it's worse for battery (and it's just one year old), I'll switch to the good old usb cable.
You could test it out for yourself with my app
https://forum.xda-developers.com/android/apps-games/charge-monitor-t3555496
Vogal said:
Hello, after sending my s7 edge to warranty for terrible battery (2h Sot at the top after a clean install), i´m questioning if could be the use of wireless charging every night the cause of so fast battery degradation.
In battery health concerned, there is a difference using the wireless charger instead of normal cable charger?
And btw, a good Samsung wireless charger is better than a ordinary one?
Click to expand...
Click to collapse
I recommend to read this
:good:
They replaced my battery, now its much better.
For now, I'll try using only the provided charger and cable.
Hi
we have the transformer with 1.8 mAh but this is quick charge 3.0.
So what is the max amperage that LG G6 can support?
thank you all
I saw max 2.5A incoming according to Ampere and Battery monitor widget.
dedovec said:
I saw max 2.5A incoming according to Ampere and Battery monitor widget.
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is it an app?
overall speed depends on voltage too (higher amperage is good, and higher voltage is good too)
KingFatty said:
overall speed depends on voltage too (higher amperage is good, and higher voltage is good too)
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Yeah this is right but all elettronic components have a threshold. If you exceed the limit the components burn. So this is the question. What is this limit?
On the charger there is 1.8 mAh for current. But my powebank have 2.1 mAh for the output. So the LG G6 support this amperage?
varefaz said:
is it an app?
Click to expand...
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Yes, you can find both of the apps on Play store.
varefaz said:
Yeah this is right but all elettronic components have a threshold. If you exceed the limit the components burn. So this is the question. What is this limit?
On the charger there is 1.8 mAh for current. But my powebank have 2.1 mAh for the output. So the LG G6 support this amperage?
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Well, kind of. The phone will not draw more current than it is able to handle. Using a power source that's capable of 2.1A will not hurt a device that can only draw 1A. The rating of your powerbank is merely the maximum current it can supply while maintaining its rated voltage.
See this article that shows how the phone is smart and will vary the current (amps) that it pulls from the charger, and will be careful to protect the battery and not pull too much current as the battery reaches full charge:
https://gtrusted.com/the-lg-g6-charger-uses-qualcomm-quick-charge-3-0-instead-of-usb-power-delivery
Example snippet from the article: "while the current jumps around before settling at 1.7 amps (this delivering 15.3 watts). ... In the first 60 minutes of charging, the voltage stays at 9 volts while the current steps several times down to 1.3 amps"
G6 charging slow
My g6 is charging crazy slow no matter what...I use amperage app and I can only get out to draw 800mah, no matter what I plug into.(2.1a etc)...doesthis mean I should replace its battery or what?
toohey503 said:
My g6 is charging crazy slow no matter what...I use amperage app and I can only get out to draw 800mah, no matter what I plug into.(2.1a etc)...doesthis mean I should replace its battery or what?
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If your screen is on, the charging current decreases to max 800mA so the battery won't overheat during charging and phone usage.
If the screen is off for longer period of time and the phone still is charging slowly, it is usually caused by warm phone or environment OR heavy tasks performing in background. If none of these conditions apply to your case then (unless you are using original charger and original cable included in the box) it might be something wrong with the phone.
I have USB port tester from AliExpress and I made some tests of charging currents and voltage on my BlitzWolf BW-S5 charger as it's QuickCharge 3.0 certified charger.
With the screen off, the phone does ramp up the voltage starting from 5V. The steps are 200mV every couple of seconds. It's absolutely in line with QuickCharge 3.0 specification BUT! the phone ramps up only to 9V and then stops. It never reached 12V - maximum QC3.0 voltage.
I did plenty of tests and the voltage always stayed at 9V.
Also the current never reached QC3.0's 9V's maximum value of 2A. It usually was around 1,5A-1,8A.
I even placed my phone in the fridge a couple of times, no result
So my opinion is G6 is QuickCharge... 2.5 compatible? Voltage stepping from QC3.0 applies to our phones but either voltage or current does not match QC3.0 maximum values that can be pushed to the phone.
Also charging with original LG charger included in the box and BlitzWolf charger takes almost the same amount of time. Sometimes LG is faster, sometimes BlitzWolf is faster.
So the issue is I bought quick charge 3.0 adapter from xiaomi site but it isn't making much difference because stock thermal values are too limiting
It charges 2800 ma while temp is >37 c
2300-2400 at > 39c
After that at 1900
Is there any way to start throttling from 44-45 c
im shocked 2800mA charginig speed in RN7 as it is capable of 18W fast charging only
but well from my experience with different phones is that as the phone going to full charge especially after 85 % i experienced mobile heatup and the charging current drops, but i think your issue may arise during low charge mode as well
first of all charge your screen while keeping display off and after every 15 minutes you can check for the average charging current and temperature for that session via Accubattery easily
by the way which app are you using for charging current
app is not accurate for checking, use USB voltmeter direct to charger to check charging amps,
in a hot country with high temperatures >30C.....then quick charge will throttle faster as battery heats.
mi 2a charger (redmi note 7pro)
even regular 2a charger (with redmi n7pro) thermal throttle.
i put my phone in charging for an hour ago and i checked suddenly and it has charged only 20% (21% to 42%) and after changing charger the charging speed was back on and also the mi charger was hot would be aroung 30 to 35 celcius.