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.
Related
I herd reports from person experiencing better battery life by using a non htc or factory charger. Some also say it takes much longer to charge but are now easily getting two days or longer life than with stock chargers. I want to narrow it down and compare the results.
I want to know what is the output mA. It is usually located on the charger it self where it states the voltage. The factory charger for the N1 is 980 mA and via usb is 480 mA. So those who are experiencing better battery life as a result of the switch, what is your mA on the charger? Also what brand is it?
I suspect this is right!
Whenever I use the stock charger, battery drops really fast, even if not using the phone much.
I'll be measuring this and put here the results.
Please do. I'm gonna try a bb charger tonight and see if it lasts longer.
I can't imagine this being the case. The battery holds a specific charge. I have a motorola charger, 500mA, and when you charge via computer USB you are getting less too. At no point have i had exceptional battery life.
I've used 2 different mains chargers, a car charger and charged from 2 seperate PC's using 2 seperate µUSB cables, battery life remains roughly the same, as you would expect.
I use my Nokia N97 charger rated 5v 1200 mA and it charges the phone from empty quite fast...sometimes from 20-30% i get to 100% in 2 hours flat...i get about 1-1.5 days and haven't tried the standard HTC charger yet cos I feel Nokia's are better quality...i even use the old Nokia usb cable but don't think usb cables make any difference.
Your Nokia adaptor will charge faster due to the extra 200mA available to the phone (assuming it's able to draw it, but given the faster charge you would assume so).
Electricity is electricity.
The only changes you'll see between sources is how fast it charges the battery.
There are no magic chargers that charge the battery a certain way to "last longer".
Higher current chargers get to the "mostly full" state quicker because they are dumping power into the battery faster. But, the protective electronics on Li-Ion batteries will cut to a "topping charge" state sooner because the charge speed is so high. The topping charge level is the same speed regardless of charger and so switching to it earlier means you spend longer in that state.
A lower current charger will take longer to get to the "mostly full" state, but it will get closer to true 100% before the electronics kick into the topping charge mode.
The other thing to consider is that the indicators on devices often indicate "charged" when the phone reaches the "mostly full" state and so the higher current chargers appear to "finish" faster. But, if you look at the charging status you will still see that it is still taking on a charge. If you wait until that stops then you will be at a true 100%.
So, if you need to get the phone to the "mostly full" state then a higher current charger is better for a quick boost. But, if you want to get the phone to a full charge then the current level of the charger may be mostly a wash due to the fact that it has to spend more time in the topping charge mode. If you are charging overnight then it really doesn't matter which you use.
Now, one thing that Li-Ion batteries do not like at all is heat. When you use a higher current charger then you heat the battery more and its eventual life (i.e. how many months/years it will last) will be impacted more than a lower current charger. So, for overnight charging I'd rather use a lower current charger. But, if you need to dump a lot of charge into the battery quickly then a higher current charger is faster if you aren't worried about getting it to the 100% full state. But, for small batteries like in phones, stay less than the rating of the batter (i.e. no higher than a 1400mA charger for a 1400mAH battery). Below that level there should be no appreciable harm to longevity, but even still - the lower the charge rate the better in the long run.
See this page for information on topping charge and charge currents:
http://batteryuniversity.com/partone-12.htm
See this page for graphs of battery longevity with different charge rates:
http://batteryuniversity.com/parttwo-34.htm
muncheese said:
There are no magic chargers that charge the battery a certain way to "last longer".
Click to expand...
Click to collapse
It is fuzzier than that.
A higher current charger will likely have the device report "I'm charged" with less power in the battery because what it really means is "I'm just doing a topping charge" and that topping charge can still be a good 10% or more of the battery life, especially higher with a stronger charger since the electronics have to be paranoid about over-charging and measuring the current changes that indicate the battery is truly full are harder when the charge rate is higher.
A lower current charger may not trigger the "I'm charged" indicators until it hits 95% full because it is pushing less on the trigger conditions.
If you have a habit of taking the phone off the charger when the indicator first goes green then you may see more battery life on the lower current charger, but it isn't magic - it's just the silly games that battery indicators play to impress the consumers.
Also, if you have a habit of taking it off the charger when it goes green then your battery may never get fully calibrated and so it may only be 70% full when it thinks it is full. But, a lower current charger may get you closer to full more often and thus cause you to reach a calibrated state easier and quicker.
For calibration you should always leave the phone on the charger until well after the light goes green, keeping it on even after the text indicator no longer indicates that any charge is happening (i.e. the lightning bolt is gone) and even then leave it on for a few hours past that anyway. Once calibrated then you have the maximum battery capacity available (modulo the "age" of the battery). It can take several hours to get a phone completely charged if it is poorly calibrated. And sometimes it may even get better with a couple of calibration cycles back to back (but only in extreme cases).
More info:
http://batteryuniversity.com/partone-12.htm
Two chargers used - one is a mains -> usb charger. (i.e allows USB lead to be used via a mains plug)
Output is 5v @ 1A
Other is a plantronics charger.
Output is [email protected] 350mA.
"Mains" based charger gives around a day's worth of charge with standard use.
The Plantronics gives me 2 days worth at standard use.
There is a fairly clear "boost" in battery life from switching between the two chargers.
Highland3r said:
Two chargers used - one is a mains -> usb charger. (i.e allows USB lead to be used via a mains plug)
Output is 5v @ 1A
Other is a plantronics charger.
Output is [email protected] 350mA.
"Mains" based charger gives around a day's worth of charge with standard use.
The Plantronics gives me 2 days worth at standard use.
There is a fairly clear "boost" in battery life from switching between the two chargers.
Click to expand...
Click to collapse
Well I just finish charing my N1 battery with a universal charger rated @ 200mA. It took over 4hours, I let it stay for 5. With my OEM charger I would get barely a day. So lets see how my battery lasts today.
flarbear said:
Higher current chargers get to the "mostly full" state quicker because they are dumping power into the battery faster. But, the protective electronics on Li-Ion batteries will cut to a "topping charge" state sooner because the charge speed is so high. The topping charge level is the same speed regardless of charger and so switching to it earlier means you spend longer in that state.
A lower current charger will take longer to get to the "mostly full" state, but it will get closer to true 100% before the electronics kick into the topping charge mode.
The other thing to consider is that the indicators on devices often indicate "charged" when the phone reaches the "mostly full" state and so the higher current chargers appear to "finish" faster. But, if you look at the charging status you will still see that it is still taking on a charge. If you wait until that stops then you will be at a true 100%.
So, if you need to get the phone to the "mostly full" state then a higher current charger is better for a quick boost. But, if you want to get the phone to a full charge then the current level of the charger may be mostly a wash due to the fact that it has to spend more time in the topping charge mode. If you are charging overnight then it really doesn't matter which you use.
Now, one thing that Li-Ion batteries do not like at all is heat. When you use a higher current charger then you heat the battery more and its eventual life (i.e. how many months/years it will last) will be impacted more than a lower current charger. So, for overnight charging I'd rather use a lower current charger. But, if you need to dump a lot of charge into the battery quickly then a higher current charger is faster if you aren't worried about getting it to the 100% full state. But, for small batteries like in phones, stay less than the rating of the batter (i.e. no higher than a 1400mA charger for a 1400mAH battery). Below that level there should be no appreciable harm to longevity, but even still - the lower the charge rate the better in the long run.
See this page for information on topping charge and charge currents:
http://batteryuniversity.com/partone-12.htm
See this page for graphs of battery longevity with different charge rates:
http://batteryuniversity.com/parttwo-34.htm
Click to expand...
Click to collapse
Great points indeed. I've learning alot and thanks for the links.
Hello everyone,
I was wondering how far the nexus 4 can be pushed concerning charging...
I noticed normal charger on AC mode goes 1.2A, if you use USB socket of your pc it only charges 0.5A.
What is the maximum of A that the Nexus 4's battery can go? In other words if I took a 2.1A charger How much of that would it actually use?
Thanks
Chargers don't push, devices draw. You could put a 50 amp charger on it, it won't draw any more current than with the stock charger.
Solutions Etcetera said:
Chargers don't push, devices draw. You could put a 50 amp charger on it, it won't draw any more current than with the stock charger.
Click to expand...
Click to collapse
So it can only draw 1.2A physically?
Is it technically possible for the device to draw more?
Is it a physical lumutation or a software limitation?
Not really, Nexus 4 Draw arround 700-900mA even with a
2.1A Charger...!
Artego said:
So it can only draw 1.2A physically?
Is it technically possible for the device to draw more?
Is it a physical lumutation or a software limitation?
Click to expand...
Click to collapse
Given a constant voltage, the load (circuit) determines the current flow.
Think of 85 watt/120 volt light bulb. When connected to 120v outlet, it always draw 85w. No matter if 1 amp is available, or 20 amps, it will always draw the same amount of current.
Unless of course you increase voltage. Voltage is pressure, current is flow. Increasing voltage will push more current given the same load. Of course, increasing voltage can also damage devices that are not designed for it. Try plugging a 12v light bulb into 120v... POP!
The charging circuit inside the phone determines the load that is presented to the supply. The reason it only draws 500ma when plugged into a computer USB port is because the phone is smart enough to know it is connected to a computer because of signal on the data pins (2 & 3). Power is on pins 1 & 4.
Quick question: can I use the N10 charger to charge my Galaxy nexus? This is the normal USB charger and not the POGO charger. The only reason that I ask is that the end that connects to the wall is significantly bigger on the nexus 10 charger than the galaxy nexus charger. Figured i would ask before I burn anything.
No problem at all.
Just look at the chargers you have.
Voltage will most likely always be 5V. Lower amps can hurt the charger but not the device.
One easy way to look at it is this:
Voltage is provided by (or pushed) by the power supply.
Amperage is taken by (or pulled) by the device being powered.
In other words, while the voltage is a constant and should match, the amperage is something that varies based on the devices need. Your computer will "pull" more amps when it's working hard than when it's not. The voltage will remain the same regardless.
The amperage rating of a power supply is the maximum number of amps that it's able to provide if needed.
Thus, as long as you replace your power supply with one that is capable of providing as much or more amps than the previous supply, you'll be fine.
Of course you can!
I use N10 charger to charge my Nexus S and I haven't problem.
Great! thanks everybody!
To power up, you consume Red Bull. But your phone just needs its adaptive fast charger. Rate this thread to express how quickly the Moto X4 can charge. A higher rating indicates that it charges extremely fast.
Then, drop a comment if you have anything to add!
Charges from sub 30% to over 80% in a little over a half an hour.
Charging is on the faster than normal side, but I am not sure the TurboCharge feature is fully implemented... seems to charge just as fast on any 5 volt/3 amp charger as it does with the TurboCharger (which is supposed to ramp up to 12 volts when it negotiates a connection with a supported device)
Confirmed, plugging in a regular 5v/3a charger brings up the same "TurboCharger Connected" toast message as the actual 5/9/12v TurboCharger... and charges just as fast. Something is not working here.
The supplied charger is marked 5V 3A, 9V 1.6A, 12V 1.2A which is 15 watts any way you slice it. So you probably won't notice a big difference IF your charger can really supply 3 amps and the phone can take it. I guess the 12V charge might be a little more efficient, less heat. Previous motorola phones with USB-C (e.g. Droid Moto Z) could take up to 5+ amps using "TurboPower" charger which was NOT QC 3.0, it was something else, so Motorola likes their own branding which may or may not have anything to do with QC 3.0.
Also, for what it's worth, when I plug it into my RAV Power powerbank with a QC 2.0 port, it indicates "TurboPower Connected". When I plug it into the regular "ismart" 2.4 Amp port, it indicates "Charging". I have the same result with an Anker "PowerIQ" charger, it indicates "Charging" using the 2.4 Amp ports. This implies to me that the Qualcom quick charge is doing the job and charging faster than a regular 2.4 Amp charger. When I plug it into a USB-C charger which can supply 5V/3A it indicates "TurboPower Connected". I think that both QC and USB-C allow a sophisticated negotiation of charge rates vs. the dumb USB method using resistors. The TurboPower Connected message therefore indicates that the phone has negotiated the maximum charge rate, which is greater than that allowed by regular USB spec. So, to my eyes it is working as designed and will provide the maximum charge rate using *either* as USB-C charger, or a Qualcom Quick Charge charger.
With the supplied charger, it takes exact 1 hour from 5% to 90% and 25 minutes for last 10%.
help my moto x4 ( is giving problems with fast charging, with the original charger takes more than 12 hours charging and does not finish loading 100%
I take Moto g5 plus and x4 both had 3000mah battery I tried to find charging speed . Then find out x4 charges faster than g5 plus then I researched about that after I found x4 has good thermal so charging speed will be at 3050mA ,4.2 -4.4 volts due to good thermals turbocharging working still 45 -46°c after that it get stopped on other hand g5 plus charged at rate of 2106 mA 4.0-4.2 volts but turbocharging stops at 40°c
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.
Click to expand...
Click to collapse
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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Click to collapse
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...
Click to collapse
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?
Click to expand...
Click to collapse
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?
Click to expand...
Click to collapse
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.