I have a modified USB port that can deliver about 4amps at the normal USB 5volts will that effect my phone if I charge from it? Will the phone suck to much power and damage the battery?
I'm assuming the circuitry to limit the battery from charging to fast or over charging is built into the phone and not in the charger?
Cheers guys
H_L said:
I have a modified USB port that can deliver about 4amps at the normal USB 5volts will that effect my phone if I charge from it? Will the phone suck to much power and damage the battery?
I'm assuming the circuitry to limit the battery from charging to fast or over charging is built into the phone and not in the charger?
Cheers guys
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I don't think that the phone will suck up too much energy, but I'd advise you to be careful, because phone's circuitry was made to hold up to 3Amps (fast charging). If I were you, I'd absolutely try and then blame myself for whole life, what have I done if my phone died... But like I said. I cannot prevent you from doing it, but I can advise you not to. Keep me updated [emoji6]
Sent from Lenovo a6000 1GB version.
Related
well not necessarily,
BUT
the phone has TWO modes of charging.
UBS and AC Charger.
USB recharges about 400-500mah
AC recharges about 900mah
This is flagged by a pin on the USB. BUT this is also flagged in the OS somewhere.
This is done in windows mobile via software hack so the OS thinks it's always on AC charger.
I'm just throwing this out there if someone can figure out what code is flagging the system to think this is UBS or AC connected.
i think the AC method just reduces the charging time, other than increases battery life. Right?
imleon said:
i think the AC method just reduces the charging time, other than increases battery life. Right?
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Yep. But I think that's what he's getting at. He wants it to charge just as fast while on usb. There's no way to increase battery life... other than buying a higher capacity battery.
jp2012 said:
There's no way to increase battery life... other than buying a higher capacity battery.
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Or using Collins Battery Tweak. http://forum.xda-developers.com/showthread.php?t=791060
you can try that but no matter what yo u cant get anymore power out a USB. if a USB does 4-500 then even if it was hacked it would only output 4-500. If anything it might damage the phone.
Only real possibility I can think of usb charging any faster is if you made a double headed usb cord (for plugging into two usb ports) it won't hurt anything, matter of fact Arduino boards can be used like this as well as external cd/dvd drives without dedicated power, and even some low power routers (like my fon router)
At either rate, even if this were to work, you have to think about how the phone itself rates the incoming power. It may have nothing to do with the actual power charging mode coming into the phone (preferable for dual usb method), but if it has anything to do with just hardware, then it is most probably a no go because of the power balancing in the phone itself.
As far as the pin solution on usb, that may very well help out. I am sure it can range on the incoming power from the plug with that.
If you carefully open a usb charging cable and short the green and white wires on the pc side, with a 200 ohm resistor, the pc will output higher amperage and not let the phone switch into pc charge mode. You will not be able to sync with that cable but it will charge your phone like your ac outlet as long as it is a usb 2.0 port.
Why not just buy a charger for a MOTO Razr? Thats why I use and it charges my phone fairly quickly, but slow enough to put more of a deep charge into the battery.
The less amperage you put towards charging a battery, will actually charge the battery "more".
I tend to charge my transformer by leaving it plugged into my pc via usb for most of the day.
Does anyone know if this is bad for the battery compared to using mains to charge?
Obviously with the transformer it takes a very long time to fully charge via usb so it is plugged in for hours and hours.
The battery is a Lithium Polymer (Lipo) so it doesnt have a memory like the old Nicads and its even better than NiMH or Li-ion. Newer Lipos can be charged at upwards of 2-3C. There is no benefit from trickle charging these batteries. The internal charging circuit wont allow it to happen anyway. Once the battery hits 4.2v per cell it will stop the charge. So to answer your question; no it doesnt matter which you use to charge it. Might as well use the main charger and have it done faster.
Interesting, but do we know the transformer uses the newer battery and could you provide a reference to the info for this newer type of li-ion battery?
Well in this case the 2-3C charging is irrelevant since we have no way of charging it that fast anyway since the TF has some sort of internal charging circuit. I was just trying to make the point that the main charger is not nearly putting out enough current to cause the battery any harm or for that matter a shorter life than the USB would. Looking at the AC charger it says 15v 1.2A so it should charge at about 2.5 times faster than a typical USB port if it were putting out 15v (it doesnt...it only puts out 5v 500mA). Im actually surprised that at 5v it manages to charge it at all....guess thats why it has to be off and sit there for 2 days.
carrera0to60 said:
Well in this case the 2-3C charging is irrelevant since we have no way of charging it that fast anyway since the TF has some sort of internal charging circuit. I was just trying to make the point that the main charger is not nearly putting out enough current to cause the battery any harm or for that matter a shorter life than the USB would. Looking at the AC charger it says 15v 1.2A so it should charge at about 2.5 times faster than a typical USB port if it were putting out 15v (it doesnt...it only puts out 5v 500mA). Im actually surprised that at 5v it manages to charge it at all....guess thats why it has to be off and sit there for 2 days.
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I had the general impression that slower charging of batteries is usually better. You usually don't get something for nothing. If the newer batteries are different that great but where did you read this?
Hello,
I have a micro usb charger that cam with my hp touchpad. looking at the label it seems like it supplies a 2A current as opposed to the 1A our phone takes. Can i use it on the G2x resulting in faster charging or will i damage the battery?
thanks,
Ismail
imoumni said:
Hello,
I have a micro usb charger that cam with my hp touchpad. looking at the label it seems like it supplies a 2A current as opposed to the 1A our phone takes. Can i use it on the G2x resulting in faster charging or will i damage the battery?
thanks,
Ismail
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You can use it as long as it supplies the correct the voltage. I use a 2amp charger with my G2X and I love how fast my phone charges. The phone will only draw as much as it can.
A faster charge results in a hotter battery. Some people think fast charging the battery is also the cause of the infamous SOD (Sleep of Death). Keep an eye (or ahnd) on your phone and make sure it is not getting too hot while on the charger.
phburks said:
You can use it as long as it supplies the correct the voltage. I use a 2amp charger with my G2X and I love how fast my phone charges. The phone will only draw as much as it can.
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The hotter the battery goes, the shorter the battery life span will result as li-ion battery doesn't quite like in hot temp. Never tried a 2A charger to charge my G2X, so I would not know. But I am using a 1A charger to it and it works great If 2A charges does not cause the battery to go too hot, it should be fine.
I've been using this charger since May with no issues. The battery will only draw as much as its capable of drawing. As long as the voltage is the same as the stock charger then there is no issue. You could connect it to a 5 amp charger and it would still only draw the 1.x amps its designed to draw.
Going too low on amperage is where you have to be careful.
thanks for the replies, turns out that 2A charger is 5.3V as opposed to the 4.8V LG charger...
phburks said:
I've been using this charger since May with no issues. The battery will only draw as much as its capable of drawing. As long as the voltage is the same as the stock charger then there is no issue. You could connect it to a 5 amp charger and it would still only draw the 1.x amps its designed to draw.
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+1 on that, LG may be dumb, but they're not dumb enough to let their phone overload with un-needed electricity.
i have bought tablet few days ago and i got usb charger with it (i mean a charger with usb port at end)
that charger have output of 5v and 2000ma
stock samsung charger have output of 5v and 700ma so i thought that if i can use that charger maybe it will help to charge my phone very fast as it have output of 2000ma.
can i use that charger with my galaxy r? can it damage to my phone or it's battery?
xlm13x said:
i have bought tablet few days ago and i got usb charger with it (i mean a charger with usb port at end)
that charger have output of 5v and 2000ma
stock samsung charger have output of 5v and 700ma so i thought that if i can use that charger maybe it will help to charge my phone very fast as it have output of 2000ma.
can i use that charger with my galaxy r? can it damage to my phone or it's battery?
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It would not be recommended as it may actually damage the battery or even the charging circuit which charges the battery in your R if it can't withstand the higher rate of charging.
'cooleagle' said:
It would not be recommended as it may actually damage the battery or even the charging circuit which charges the battery in your R if it can't withstand the higher rate of charging.
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thanks, i will stay away from that tab charger don't wanna damage my phone
A higher amp output should be ok.
A higher voltage is the one you should be worried about.
s4sixty said:
A higher amp output should be ok.
A higher voltage is the one you should be worried about.
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But cooleagle said maybe it can damage battery and/or charging circuit
Sent from my GT-I9103 using XDA
Simple Guidelines When Buying a Charger
Use the correct charger for battery chemistry. Most chargers serve one chemistry only.
The battery voltage must agree with the charger. Do not charge if different.
Within reasons, the Ah rating of a battery can be higher or lower than specified. A larger battery will take longer to charge than a smaller one and vice versa.
The higher the amperage of the charger, the shorter the charge time will be. There are limitations as to how fast a battery can be charged.
Accurate charge termination and correct trickle charge prolong battery life.
When fully saturated, a lead acid charger should switch to a lower voltage; a nickel-based charger should have a trickle charge NiMH; a Li-ion charger provides no trickle charge.
Chargers should have a temperature override to end charge on a malfunctioning battery.
Observe the temperature of the charger and battery. Lead acid batteries stay cool during charge; nickel-based batteries elevate the temperature towards the end of charge and should cool down after charge; Li-ion batteries should stay cool throughout charge.
Souce : http://batteryuniversity.com/learn/article/all_about_chargers
One more reason why we should be extremely cautious when using other chargers is that when using the charger provided by Samsung I have observed that the charger cuts off the supply to the battery when the battery reaches 100 %.
It may not be the same when using other chargers which will lead to over charging the battery. This continuous over charging can reduce the life of the battery.
Lastly you can experiment as much as you want ( BTW that's why most people are on this forum ) its your decision, but see to it that you are not damaging the battery or the handset in the process.
Its not the charger that cuts off power supply to the phone.
It's the memory chip inside the battery that supplies information to initiate the cut off.
That is why it's highly recommended to use original batteries in ur phone so that the phone will not burst into flames !!!
A Smart Charger, on the other hand, has a built in circuitry that does the cutting off and after that continues to trickle charger the batteries to maintain the charge on the batteries. U can usually see this for car chargers.
These chargers cost way more than ur average Samsung charger.
Cheers !
thanks for guys for giving your valuable opinions
today i thought i should give it a try
i used stock micro usb to usb cable to connect with that charger and plugged in but something weird happened
when i plugged in charger screen lights up with with notification tone as usual but touch screen stopped responding
both touch screen and touch sensitive buttons stopped working only home button was working after removing that charger all things started to work again normally really strange
xlm13x said:
when i plugged in charger screen lights up with with notification tone as usual but touch screen stopped responding
both touch screen and touch sensitive buttons stopped working only home button was working after removing that charger all things started to work again normally really strange
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Don't use that one again buddy !
'cooleagle' said:
Don't use that one again buddy !
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yeah for sure i love my phone
Is it safe to charge my battery with my LG G6 USB C cable(16W adapter)? I know that the Pixels one has a 18W but I don't want to risk reducing battery life or damaging it in any way. I get 30hours of life and I'd like to keep it like that as long as I can. Thanks in advance.
samsung striker said:
Is it safe to charge my battery with my LG G6 USB C cable(16W adapter)? I know that the Pixels one has a 18W but I don't want to risk reducing battery life or damaging it in any way. I get 30hours of life and I'd like to keep it like that as long as I can. Thanks in advance.
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It is perfectly safe to charge. It is safe even if the charger has more power than the stock one (not in your situation).
The labeled charging power is actually the MAXIMUM possible power that the adapter can deliver, which is not always the case (charging speed drastically decreases when the battery is nearly full).
I personally use even a lower wattage charger in order to preserve the battery. Frequent quick charging can reduce the battery lifetime, so it's better that you slow charge if there is no rush (i.e. charging overnight).