I have my 3rd gen iPad charger which says it's 2.5A.
Will using this charger harm the battery at all?
Also, are all micro USB cables safe to use with charging? What I want to know is whether different cables provide the same function with regards to charging.
Beamed from Jupiter on my Galaxy Note II
Yes, it is safe. The 2.5A rating means the charger is capable of supplying up to (at least) 2.5A. If the Note requires less, that's not a problem.
As for USB cables, considering the relatively high current the Note can take, lower quality (as in thin or not properly soldered) or long cables may cause a voltage drop severe enough that the phone may not be able to charge or may take longer to get a full charge.
Yep, had a 2.5 year old Samsung Galaxy S cable in it connected with usb on my computer, turned the phone off, 4 hours later -> +5% lol.
Cool which brings me to my next question.
Is not possible to obtain chargers with insane Amps?
So my Note 2 charges faster?
Beamed from Jupiter on my Galaxy Note II
Think of the phone and the charger as, say, a small lamp, a washing machine and your home's electric sockets. You should have a good enough electric circuit that allows a washing machine to be be connected. Doesn't mean if you connect a lamp to the same socket, it will consume as much as a big machine.
A charger capable of many more amps would not help at all with charging faster. The phone's circuit asks for 2A or, probably, quite less, and that's all it gets. Even you had a charger capable of giving 10A.
Besides, chargeing the battery at a higher current than what it's designed for would be a very bad idea. The battery wouldn't last very long.
mg35pt said:
Besides, chargeing the battery at a higher current than what it's designed for would be a very bad idea. The battery wouldn't last very long.
Click to expand...
Click to collapse
The resulting fire might, though!
The charger is just a "stupid" supplier. The charging circuitry within the phone provides the "intelligence" that charges the battery in the best way possible. As mg35t says, the charger can handle 2Amps if the unit it charges calls for it, but I doubt it uses the full current in this case, probably 1.2-1.6 when it charges at full current.
Modern chargers usually have built-in current limiters. That is why you can use a older and smaller charger without breaking it, with the cost of slower charging. All phone-brands agreed to use micro-USB, well, except the obvious iPhone who just "must" have a own system, otherwise they would follow the "spirit of Apple" I guess
Related
The Samsung charger adapter which comes in the box is very slow in nature. It take more than 2 hours to charge my phone. I was wondering if I can use the following Nokia brand chargers which are fast chargers?
Nokia Charger Adapter CA-146C
Nokia Fast Micro-USB Charger AC-10
It won't make any difference the phone decides what current it draws from the charger, so it'll take just as long to charge.
Are you really sure about this? Can you link me to some articles which confirm this.
Even I was thinking about purchasing AC-10 charger from Nokia.
How fast is the nokia charger?
0-10% -> 100% in an hour or less?
Joey2o11 said:
It won't make any difference the phone decides what current it draws from the charger, so it'll take just as long to charge.
Click to expand...
Click to collapse
I'm not sure about this. I have a friend with a Blackberry Playbook and he reckons his phone charges much faster if he uses the charger from that.
The "stock" S2 charger is 700mA - it doesn't take a genius to work out that for a 1650mAh battery this will take about 2.5 hours to fully charge the battery under ideal conditions (phone off) or anything from 3-6 hours with the phone on, depending all what's running or if you're using the phone while it's charging.
Which is all pretty ridiculous - ok we're comparing apples and oranges when we compare a S2 to the likesw of a Nokia, but I do miss the days when I could charge my phone in an hour and have it last two or three days. I thought my Blackberry was bad but at least I can usually squeeze a full day out of it...
The only wall wart I had lying around that was more than 700mA was a 5V 2A supply. I've tried with that which works, but the phone chokes with a "battery overtemp" warning after about 10 minutes - which tells me I AM pumping more into the battery than it can handle. This would suggest that there IS a happy medium where we can optimize the battery charge time - I'm bust looking for a 1A supply...
I have TWO AC-10Xs, and am using it with the Ninphetamene kernel (which comes with increased charge input mods to 800ma) fine. Charges to full in about 2.5-3 hours.
I've never gotten overcharge errors either.
Hi,the usage of more powerful charger will eventually reduce lifespan of your battery. This comes from basic physics, materials and so... Higher mA means faster current, which wear the material of the capacitor - battery.
I have capdase 2 USB car charger that was used for my old iphone device.
It outputs 1A.
is it safe to use it?
I tried to charge with it for 10-15minutes or so, and didnt recognize any suspicious warmups...it reached 41~degrees while at the moment im charging and using it as a hotspot and its on 38 degrees.
DobermanS said:
Hi,the usage of more powerful charger will eventually reduce lifespan of your battery. This comes from basic physics, materials and so... Higher mA means faster current, which wear the material of the capacitor - battery.
Click to expand...
Click to collapse
The phone (specifically, the kernel) limits charge coming in, and there MUST be hardware limiters on the batteries and the phone themselves (which, in some cheapo batteries DON'T WORK and results in them frying themselves and the phone in process) and the batteries are replaceable anyway.
eranyanay said:
I have capdase 2 USB car charger that was used for my old iphone device.
It outputs 1A.
is it safe to use it?
I tried to charge with it for 10-15minutes or so, and didnt recognize any suspicious warmups...it reached 41~degrees while at the moment im charging and using it as a hotspot and its on 38 degrees.
Click to expand...
Click to collapse
i use htc wall charger rated at 1A and having no proplem with ,a pc USB port is capable of 1A and we all know there are no problem ,even so there are no visible improvement in charging time because as someone said the charging current is automatically regulated
ledavi said:
i use htc wall charger rated at 1A and having no proplem with ,a pc USB port is capable of 1A and we all know there are no problem ,even so there are no visible improvement in charging time because as someone said the charging current is automatically regulated
Click to expand...
Click to collapse
That's good to know that the current is regulated by the device.
Is there a software to see what is the current taken by the phone?
As long ad the temperture isn't higher than 45degrees is it ok?
By the way, Im pretty sure that usb outputs 0.5A and not 1A
Sent from my GT-I9100 using XDA Premium App
battery monitor widget
It seems logical to be able to use all chargers as smartphones all have micro usb .
(I 'm not sute that's mean something in english, sorry)
Great widget! thanks.
I really like the data it gives!
Sadly, while charging with my .7A original charger & meanwhile giving a hotspot to my laptop, it shows that only 76mA comes in!
hehe, gonna take forever to charge the battery this way.
i doubt this. i'm still worried about the compatible problem~~~
After two days with the battery monitor widget Im affraid itself it drains the battery.
could it be it affects the battery?
settings are regular, it monitors changes every 60seconds
Let's see if I can help make things a bit clearer. Feel free to correct where I may be off.
The Nokia thing, it's not a charger. It's a power supply.
The "charger" is built into your phone, hardware-wise.
How can I prove it?
Take the Samsung supplied cable, plug it into your computer. You'll see that your phone is charging too. No, the cable is not a charger. Do you think your computer is a special built charger for your phone? Hardly.
The charging circuit is within the phone, and thus charging the battery when there's available power.
Ok, so we have the charger (i.e. the mobile phone), we have the battery, we need the power. Where do we get power from? The wall adapters (or computers). So what are the wall adapters? Ratings of 1000mah means that the wall adapter can provide up to 1000ma per hour.
However, your charging circuit will determine how much current to actually draw. For example, drawing 800mah for 10 min may raise the temperature to 55 degrees, so after 10 min the charging circuit drops the charging current to 500mah.
Of course, if you're using el cheapo cables, some cables may not be able to support the current draw and you may find that even with 20000000mah power supplies your phone can only draw 100mah.
The SGS2 heats up pretty easily, and it doesn't quite draw beyond 700mah. The circuit built into the phone doesn't allow it to, if i'm not wrong. If your phone is overheating while charging, you better change your case as it's going to cause your phone to overheat sooner or later.
Using a 20000000mah power supply isn't an issue, because the charging circuit within the phone will be able to draw only a certain amount.
Me, I plug my SGS2 into a 2Ah charger every night to charge, and yes it's perfectly fine. I'm only upset that after buying an expensive 2A charger, I realised that the phone is not able to draw high currents (phone even heats up to 55degree Celsius when charging).
Charging the phone on a ice pack (which lowered the phone temperature to 16 degrees while charging) didn't increase the amount of current drawn by the phone, even on a 2A power supply.
My humble advise is, stick with the stock power supply, or at most get a 1A version. No need to splash for a 2A power supply. If you really need faster charging, get a battery charging dock.
eranyanay said:
After two days with the battery monitor widget Im affraid itself it drains the battery.
could it be it affects the battery?
settings are regular, it monitors changes every 60seconds
Click to expand...
Click to collapse
yes of course it does. It consumes a certain amount of ma per hour, doesn't it?
Personally, there's a app called watchdog, look for it, IMHO it helps to catch rouge apps better, and manage battery better.
I thought the whole idea of having a universal micro USB charging connection across most good brands was so you could use other chargers!
moooxooom said:
yes of course it does. It consumes a certain amount of ma per hour, doesn't it?
Personally, there's a app called watchdog, look for it, IMHO it helps to catch rouge apps better, and manage battery better.
Click to expand...
Click to collapse
Well I just like the widget, which shows me also the battery temperture
I hope it doesnt takes too much
The original Samsung charger outputs 5V---1000ma, I have an extra blackberry micro usb charger that outputs 5V---750ma.
I want to use my old blackberry charger in my office, will this different current output affect my battery long term or short term?
edlivian said:
The original Samsung charger outputs 5V---1000ma, I have an extra blackberry micro usb charger that outputs 5V---750ma.
I want to use my old blackberry charger in my office, will this different current output affect my battery long term or short term?
Click to expand...
Click to collapse
One of the immediate side effects will be that your phone will take a longer time to fully charge your battery.
If I helped you out in any way please thank me. Thanks.
Not sure how the blackberry chargers are. I know some of the Motorola chargers are accepted by the phone for high current charging (any charger that doesn't puts the phone in low current mode).
I charge my phone every night on my old 700mah Samsung charger and while it does take longer youd hardly notice unless you were trying to get as much charge in say an hour as possible. So as long as the phone doesn't limit it you should be good. <500mah is very noticeable.
I know it will take longer to charge. But Im not as familiar with appropriate charging output for li-ion as i am for ni-mh Sanyo eneloops for example that ideally should be charged at 220ma to maximize cell life.
edlivian said:
I know it will take longer to charge. But Im not as familiar with appropriate charging output for li-ion as i am for ni-mh Sanyo eneloops for example that ideally should be charged at 220ma to maximize cell life.
Click to expand...
Click to collapse
The rule still applies the less current used to charge the better the lifespan. The phone was paired with a battery with the intention of using a 1 amp charger. The phone will only allow high current charging mode if it thinks the charger is Samsung. Shorting the data pins is a way to fool it and many aftermarket chargers already do this.
With your phone on and the phone in low current mode (320 mah i believe) you will have a hard time charging the phone if anything is wake locking the phone even screen off. You will even have trouble charging and using the phone at 500mah depending on whats going on.
The phone will be eating some amount of power from the charger, the battery is not always seeing as much current as you might think. I always stick by the practice of not deep discharging it, LiION would rather be topped off then not charged (geeze remember NiCad laptop batteries.... lol). I feel this battery will be the shortest lifespan of any phone or laptop I have ever had. Just due to how much use it sees.
Charger
Any micro usb charger should work. I've had a dozen or so different gadgets that all use micro usb from Blue Tooth headsets, to speakers. I use all chargers interchangeably with one noteable exception. My wife's Nook Tablet will only charge using the provided Nook charger. Found that out the hard way.
I have also found that not all micro usb cables will provide data transfer for all phones. I'm guessing different pin-outs? For instance when I was trying to root my ET4G, I forgot my OEM cable at home so I tried to use my EVO cable. That dind't work well at all.
My old blackberry chargers seemed to work fine but I started seeing some strange jumping around of the battery while using. For instance it would all of a sudden jump up to 100% charged then if I unplugged and plugged back in it would go back to 70% or whatever. I went back to only samsung or just charging off usb. I use my pc, printer, cable box etc to charge my phone.
I charge mine with either the stock charger that came with my E4GT, or an old 700MAh charger that came with my old Samsung Rant. Occasionally I use the charger that came with my HTC Evo 4G. I really can never tell a difference. Although, like someone above said, it seems as if non-Samsung usb cables will not charge when plugged into a computer. That's how it is with the HTC cable, and I've also tried an LG usb cable and got the same results.
Sent from my SPH-D710 using XDA
BBJon said:
I have also found that not all micro usb cables will provide data transfer for all phones. I'm guessing different pin-outs? For instance when I was trying to root my ET4G, I forgot my OEM cable at home so I tried to use my EVO cable. That dind't work well at all.
Click to expand...
Click to collapse
Really? I rooted and always use Odin using an HTC cable...
EggosEvo said:
I charge mine with either the stock charger that came with my E4GT, or an old 700MAh charger that came with my old Samsung Rant. Occasionally I use the charger that came with my HTC Evo 4G. I really can never tell a difference. Although, like someone above said, it seems as if non-Samsung usb cables will not charge when plugged into a computer. That's how it is with the HTC cable, and I've also tried an LG usb cable and got the same results.
Click to expand...
Click to collapse
I had the exclaim, the replacement to the rant and thats where my 700mah charger came from.
All of my other Micro USB cables except the one are non samsung and I use them all for charging, data and they charge while connected to pc. But none of them are from other phone manufacturers or anything. The Micro USB spec is what these phones are using there is no difference.
The difference that matters most of the time is tolerances. Its easy to end up with cables that will work well in one port but not another. The rest of the cable may also be out of spec and not work well or at all for certain purposes.
I've ruined two batteries because of non-OEM chargers on the ET4G. (Actually, ruined two, and made a third battery just render terrible performance.) I definitely don't have the problem with other devices I own, and it's definitely happened with two separate ET4G's I've owned.
So, "be very careful using alternate chargers" is all I would advise.
Sent from my SPH-D710 using xda premium
Please correct me if I'm wrong but isn't electricity the same no matter the source?
If the phone is looking to pull 1A and your charger is rated for .7A I'd be worried about the charger not the battery, which technically is a cell not a battery.
Tolerances were mentioned before and I think that is most of the problem with certain cables working fine for some people and not others. All connectors and cabling are supposed to meet the USB spec and many cheap ones don't. Also the supposed 10,000 insertion rating for micro USB is a bit optimistic imo. I replace cables after a couple months max because of loose connections.
Sent from my SPH-D710 using XDA
dberend said:
Please correct me if I'm wrong but isn't electricity the same no matter the source?
Click to expand...
Click to collapse
Not really because these chargers are doing AC to DC conversion and voltage regulation is a huge factor in its job. With a bad charger design not only can charging be affected, possibly even hurt the battery. Since the phone will consumer charger power to run while on the charger the phone can become unstable. Not talking a defective charger, just bad and cheap designs.
dberend said:
If the phone is looking to pull 1A and your charger is rated for .7A I'd be worried about the charger not the battery, which technically is a cell not a battery
Click to expand...
Click to collapse
I think about that alot actually. Coming from PC power supplies you never want to overload the unit. But I know for a fact I have devices that demand more from chargers than can be given, and do not have the low current and high current modes like this phone.
I am no electrical engineer and am only familiar with AC to DC and DC to AC circuits and various voltage regulation techiniques. But it is possible to current limit as well right? You design a half amp charger, with the data pin short to put the Samsung into high current. You limit the current to 500 mah but over build the components just a little to increase lifespan.
Anyways, I bought a 2.1 Amp RCA wall charger from walmart last night on a wim. 9 bucks, might come in handy when i get a tablet. Has a 1 Amp side and a 2.1 Amp thats shared with the 1 Amp. Phone didn't show any ill will to it and I had my Schosche GoBatt on the 1 amp end. If the phones drawing too much current could be bad in the long run but its working so far. Charged at the normal speed of the stock charger.
RainMotorsports said:
Not really because these chargers are doing AC to DC conversion and voltage regulation is a huge factor in its job. With a bad charger design not only can charging be affected, possibly even hurt the battery. Since the phone will consumer charger power to run while on the charger the phone can become unstable. Not talking a defective charger, just bad and cheap designs.
Click to expand...
Click to collapse
I agree with you on bad and cheap designs. How many tv's and other electronics have been rendered useless by a few substandard capacitors that saved the manufacturer $.02 per unit?
I try not to use any charger that doesn't have HTC, Samsung, etc on the label. I figure if they were willing to back it warranty wise for the original device it should put out clean enough power.
I'm far from being engineer but I do quite a bit of hardware hacking and learned a little bit about electronics when I was at Ft Gordon. So I'm not completely lost around a multimeter
I would imagine that there is some protection built into the charging circuit of the phone itself. How effective or what kind of tolerance Idk suppose I could look for datasheets if anybody really cares.
Sent from my SPH-D710 using XDA
Hi, my phone Note 2 baseband/ firmware is N7100UBALI9, but came with power AC charger USA prong(flat) with output 2 Ampere. All knowledge of electronics, I'm just wondering from a professional user (xda devs) is it safe using/charging regular charger output 0.5A or 1A?? or can degrades something inside the phone's/lifespan? All i know the device such iPad needs more Amperes to charge. Please check/see my charger photo below. I'm apologize my english is not perfect. I'm noob beginner. Thank you very much ,appreciate.
bongbongcong said:
Hi, my phone Note 2 baseband/ firmware is N7100UBALI9, but came with power AC charger USA prong(flat) with output 2 Ampere. All knowledge of electronics, I'm just wondering from a professional user (xda devs) is it safe using/charging regular charger output 0.5A or 1A?? or can degrades something inside the phone's/lifespan? All i know the device such iPad needs more Amperes to charge. Please check/see my charger photo below. I'm apologize my english is not perfect. I'm noob beginner. Thank you very much ,appreciate.
Click to expand...
Click to collapse
My charger is 2 amp too (bought it Sweden). My older S2 has a 0.7 amp charger (both standard original chargers). The chargers them self can handle the amps printed on them without breaking or extending the charge time. The chargers are more or less "stupid" power supplies. The electronics in the phone handles the battery charge current. The phone even monitors the battery temp, and the charge current can probably be either aborted or limited based on the temp.
My opinion, based on knowledge as a kind of "advanced" electrician...
Note II is designed for the 2A charger, that's what it needs. You can charge with lower outputs, but it'll take a lot longer to do so.
The amperage of the charger does not affect a phone battery life span. The phone draws the amount of amps needed.
I'm guessing since Samsung provided a 2amp charger, that the note 2 should be drawing that much amps. Any other charger with less amps won't harm it, but rather take longer to charge.
Sent from my SPH-L710 using xda app-developers app
So i will not worry. Thanks because i was not sure if okay or not. Thank you guys. Appreciate your answer.
there is a component in the phone which will limit the flow of max current into the phone like the S2 (450amp and 650amp, iirc the values). changer provides 2amps but phone will draw whatever it is needed. in cases if it allows, 2amps speeds up the charging process.
The phone actually draws 1300mA.
change values
sianzb0i said:
there is a component in the phone which will limit the flow of max current into the phone like the S2 (450amp and 650amp, iirc the values). changer provides 2amps but phone will draw whatever it is needed. in cases if it allows, 2amps speeds up the charging process.
Click to expand...
Click to collapse
hi! do you know how to change those iirc values? the charger provided with my note2 is rated 2A out. but when i charge, this charger generates a lot of heat. i think the heat is wasted current since the phone doesn't accept that much current. i just want to know how can i adjust these values.
thanks!
psycotrompus said:
hi! do you know how to change those iirc values? the charger provided with my note2 is rated 2A out. but when i charge, this charger generates a lot of heat. i think the heat is wasted current since the phone doesn't accept that much current. i just want to know how can i adjust these values.
thanks!
Click to expand...
Click to collapse
your charger is converting Alternating Current from your wall socket into Direct Current for your phone. The process isnt 100% efficient.
In PC's theres normally an efficiency rating that tells you how many watts of AC current is required to produce a certain amount of watts of DC current (converting from 110-240V down to 12V). ie. a 90% efficient power supply will draw 1000W of AC from your wall to produce 900W of DC for your PC. the remainder of that energy is lost in the conversion process and is often released as heat and other forms of energy.
same thing is happening in your charger. in the process of converting AC to DC (110-240V down to ~5V), some energy is lost, and some of that lost energy is released as heat. our note 2 can handle 2A of current with no issues, the heat is because our chargers are not 100% efficient in their conversion, not because the phone cant handle the current.
I was thinking about putting a new receptacle with USB and one outlet somewhere on my kitchen counter. Problem is the two better companies have two very different amperage's. Cooper is .7a and Leviton is 2.1a, both have two USB ports and one outlet. The charger for our E4GT is 1a and I also have a Galaxy Tab 10.1 that would need the higher amp version, but many have said to NOT use a higher amp charger than the one our phones came with, which is 1.
So what do you think? Is it really that bad for our phones/battery to charge it using a higher amp source? I know our charger cube is small but I also need it in various locations at home or at the office so having an outlet like this in my kitchen would be awesome.
I hate how slow USB charges our phones, so I assume .7 would still be kinda slow and not charge my tablet either.
http://www.amazon.com/Cooper-Wiring-Devices-TR7740W-K-Combination/dp/B007NC5GI4
http://www.amazon.com/Leviton-T5630...F8&qid=1350409796&sr=1-1&keywords=leviton+usb
My vote is for the 700. It will be better for your batteries over time.
Interesting thing that I have learned is that the Leviton version only pushes the higher amps on one of the USB ports. There is no where that states how much the one that gets less does though and I have read that if you plug in a device that does not need the extra amps that USB somehow puts out less amps and it charges slower.
I need to do more investigating though.
revamper said:
My vote is for the 700. It will be better for your batteries over time.
Click to expand...
Click to collapse
I agree to an extent.
I feel that it really depends on how long you keep your usb charged devices. Battery degradation may not be an issue if you upgrade often or are the type that never has anything older than the 2nd, sometimes 3rd, newest model device on the market. Also, a lot of the newer devices require higher amps to charge at a reasonable time. This transitions into charging habits. On the 0.7A charger, you may find yourself leaving devices on chargers over night potentially hours longer after fully charging. This is arguably also damaging to the battery.
Either way you go, you may find yourself with a bunch of 6' microUSB cables from devices taking forever to charge or battery degradation. :silly:
Your phone is only going to use as many amps as it can. Say a GS2 charges at 450ma USB and 650ma AC. The phone will recognize if its USB or ac and allow it to charge according to that. Its not going to charge faster on a 1a charger unless you root your phone and hack those parameters. Doing that is what will cause battery life problems, if not cause a complete failure of the battery and/or the device.. The higher you you set the charging amperage, the more likely you are to have problems.
And phones now (especially any model of GS2) have circuitry to prevent overcharging. Leaving your phone charging overnight is not going to cause any problems.
I don't know if USB wall outlets act like USB or a/c (think about a USB cable with a wall adapter) but plugging into the USB outlet and checking in the battery info in the settings menu or a battery app can tell you.
Sent from my SGH-I777
What's next wireless charger outlets?
Get the higher-amperage Leviton.
Your device will only draw the amps it needs. The GS2 will draw < 1amp. But if you have a big tablet, they can pull the full 2.1 amps.
Since you're doing a 'permanent' wall installation, you're somewhat future-proofing yourself.
Good info, thanks all. I did not know that our phone will only pull the amps it needs, so that is good to know. I may get the higher amp version because I have a Galaxy Tab 10.1 that needs higher amperage.
So, I have powerbank and I have 2 ways of charging: 1A and 2.1A. which one to use when charging my note 2?
Handwritten from my Note 2
Depends on the cable you'd use. Samsung cable will go near 2amp, generic ones do about 1 amp
kebabs said:
Depends on the cable you'd use. Samsung cable will go near 2amp, generic ones do about 1 amp
Click to expand...
Click to collapse
I have samsung cable.. So is it smart to charge via 2.1 A ? Can it do some damage on the phone ?
I have a Momax external battery and have charged the phone with the 2.1A port. It didn't heat up, it didn't have any problems. I was planning on measuring the exact amperage that comes out of the samsung charger and the momax battery (iPower Pro), but I didn't get around to it, because I suspect the difference is actually smaller. There are many people who used more powerful chargers to charge their phones faster, and the only thing that degraded was the battery lifespan, but the difference in those cases was upwards of 0.5A between the original and the new charger. I find the 0.1A to be a small difference and I have no problem using the 2.1A port on the iPower.
So to answer your question, no, it won't damage your phone. Theoretically it damages your phone's battery, but it degrades anyway due to charging cycles, so you won't notice any damage caused by the extra 0.1A unless you plan on still using the note 2 10 years from now.
sandulea said:
I have a Momax external battery and have charged the phone with the 2.1A port. It didn't heat up, it didn't have any problems. I was planning on measuring the exact amperage that comes out of the samsung charger and the momax battery (iPower Pro), but I didn't get around to it, because I suspect the difference is actually smaller. There are many people who used more powerful chargers to charge their phones faster, and the only thing that degraded was the battery lifespan, but the difference in those cases was upwards of 0.5A between the original and the new charger. I find the 0.1A to be a small difference and I have no problem using the 2.1A port on the iPower.
So to answer your question, no, it won't damage your phone. Theoretically it damages your phone's battery, but it degrades anyway due to charging cycles, so you won't notice any damage caused by the extra 0.1A unless you plan on still using the note 2 10 years from now.
Click to expand...
Click to collapse
Thanks for reply mate ! I was thinking the same, but i needed some sort of confirmation tho
Use the 2.1A one.
The phone should only draw 2A from it anyway, that just means the port is capable of supplying 2.1A.
Using the 1A port will just charge your phone slowly, the 2.1A port should charge it as quick as the official charger, depending on which cable you use.
It is a matter of supply and demand. All USB devices can safely be plugged into any USB charger. Given an unlimited amount of current available from the charger, each device will still only draw only as much current as it is designed to draw. If the charger is rated 2.1 Amps or 5 Amps or 10 Amps, a 1.5 Amp device will still only draw 1.5 Amps. The charge rate will be at maximum Think of it like your house wiring. The circuit may have a 20 Amp circuit breaker in the basement but we plug in 40 Watt bulbs and 100 Watt bulbs and TVs and electric shavers that all draw different amounts of current. The 100 Watt bulb uses less than an amp but is unharmed being plugged into a 20 Amp receptacle (charger). Now we come to the flip side. If the charger Is rated lower than the device it just charges slower than it would if the charger could supply at least as much as the device uses. To go back to our example, the 1.5 Amp device plugged into a 1 Amp charger will take longer to charge that it would with a charger rated 1.5 Amps or higher. My analogy has one hole. If the stuff plugged into the house receptacles exceeds 20 Amps the circuit breaker pops. This will not happen with USB chargers as they limit the current and will not try to supply more than they are rated for. Stick to chargers rated as high as the one that came with your device or higher and you will be fine