2.1 Amp charger? - Sprint HTC EVO 4G LTE

I just bought one of those things you plug into the wall and it has two USB ports. One of the ports is marked 2.1A. Any reason not to charge the Evo from that?
EDIT: never mind, my bad - I found the answer in the forums.

What was the answer?
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I use a 3.0 charger..
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o0adam0o said:
What was the answer?
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2.1 is the max amperage available for charging. It won't hurt anything, as the phone will regulate the level drawn to its maximum amount.
If you use a low-power charger, say .5A or below, then it will just take longer to charge.
The 3.0 that was mentioned is USB 3.0 (speed/revision), not the current rating.

2.1 will work fine. It will charge the phone noticeably quicker. I know this because I use my Nexus 7 charge brick to charge my phone all the time and it's significantly quicker.
It's also completely safe.

ieee_raider said:
2.1 is the max amperage available for charging. It won't hurt anything, as the phone will regulate the level drawn to its maximum amount.
If you use a low-power charger, say .5A or below, then it will just take longer to charge.
The 3.0 that was mentioned is USB 3.0 (speed/revision), not the current rating.
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Actually it's a 3 amp car charger... My phone goes from dead to fully charged in like an hour
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BrianBaker said:
Actually it's a 3 amp car charger... My phone goes from dead to fully charged in like an hour
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Your phone will not intake power at a higher rate than 2.1 amps. That's by electrical design, not by software.

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LiquidSolstice said:
Your phone will not intake power at a higher rate than 2.1 amps. That's by electrical design, not by software.
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So I wasted my money on an extra 0.9 amps?.. The charger was only $8 so it doesn't matter I guess. At least I have the power to plug something else in the second USB slot and not go below 2.1amps.
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^^^that's exactly why those chargers exist.

LiquidSolstice said:
Your phone will not intake power at a higher rate than 2.1 amps. That's by electrical design, not by software.
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I was scared that I was doing damage to it by using my Note II's 2 amp charger! lol Thanks for that!

Related

[Q] Output voltage and amperage of Samsung Battery Charger

I have a question for those who bought the Samsung spare battery charger device with the integrated stand. What is the rated output voltage and amperage of the charger? If should say so on the device itself.
Also, if possible, I would greatly appreciate it if someone could tell me the actual voltage and/or amperage of the charger as measured by a volt/amp meter.
The reason I am looking for this info is because I bought a spare battery from Samsung, but the current charger that I have doesn't charge it all the way (only to about 91% full) since the output voltage is too low. I would like to purchase a third party charger since they are much cheaper, but I need to know what its specs should be.
I believe the charger your talking about is 5.0 volts and 1.0 amp. I haven't run it on a meter. I would say any usb charger with that rating or higher should be sufficient for a 100% charge
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chrisbass said:
I believe the charger your talking about is 5.0 volts and 1.0 amp. I haven't run it on a meter. I would say any usb charger with that rating or higher should be sufficient for a 100% charge
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Sorry, I didn't mean the USB charger, I meant the one where you put a spare battery in it by itself to charge. Here is the link for what it looks like:
http://www.shopandroid.com/samsung-...ntent=js_a_v1&utm_source=js_a_v1&utm_term=top
Sorry, shouldn't have said usb. I was in a sprint store on Sunday looking at that battery/charger combo and I it said 5.0 volts/ 1.0amp
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Okay, cool. Thanks a bunch!
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caveman999 said:
Okay, cool. Thanks a bunch!
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Incorrect. The charger that comes with the phone itself is 1 amp, the charger that comes with Samsung's spare battery stand ebh-1g6mla is only .7 - the stand can accept input at either 500 mA or
1 A. It outputs only 4.2v @ either 450 or 900 mA.
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stan.s said:
Incorrect. The charger that comes with the phone itself is 1 amp, the charger that comes with Samsung's spare battery stand ebh-1g6mla is only .7 - the stand can accept input at either 500 mA or
1 A. It outputs only 4.2v @ either 450 or 900 mA.
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Okay, thank you.
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Long Charging Time?

My phone takes eons to charge. And if I use it while its charging, it actually won't charge at all. Anyone else experiencing this?
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New Jer-Z said:
My phone takes eons to charge. And if I use it while its charging, it actually won't charge at all. Anyone else experiencing this?
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The charger it comes with is ****. You can get 2A chargers for about $5 from various places.
Are you using the stock charger? Overall all Galaxy devices charge horribly slow down
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Randomacts said:
The charger it comes with is ****. You can get 2A chargers for about $5 from various places.
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As he said, the stock charger does not seem to effectively charge the phone well - try using a different wall USB charger. I use an old blackberry one and it works great, and my girlfriend uses her iPhone charger with the same results.
I have a similar experience. When I am using the phone and must charge I like my HP Touchpad's wall charger which can charge slightly more than the phone uses. However I bought the Samsung desk charger with the spare battery and when the phone gets to 20-30% I just swap and charge the battery in the dock. FWIW I can get from 8- 35 hours on the batteries depending on use.
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Replacement charger through warranty

This is what Art had sent me...
Output 5.0 volts 0.7 amp
Did they give me the correct charger?
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Its not the stock charger, but it'll work. Stock is 5v-1.0a
no, you should have a 5.0v 1.0 amp charger. if you use the .7 amp charger you will notice your battery life depleting faster then normal. you can get a charger that has an output greater then 1 amp (or 1,000mA), it won't hurt the phone as long as you stay at 5.0 to 5.5 volts. the phone will only draw what it need's in ampere's. i used a 1.7amp charger (till i lost it) for awhile with my phone's, the battery would both charge faster and last longer without any harm to the phone.
SHORT ANSWER... THEY SENT YOU THE WRONG CHARGER
bonez537 said:
This is what Art had sent me...
Output 5.0 volts 0.7 amp
Did they give me the correct charger?
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Click to collapse
I am wondering if I should call up and ask for a new one..
My battery dies a lot faster now since I started using this charger..
thanks for the input guys..
Greatly appreciated..
sorry for the response time..

Kernels with Fast Charge included

Hey I've recently wanted to use the fast charge widget by Chad but I can't seem to find a decent kernel that supports it.
Is there a reason the feature is left out? I figured it would kind of be standard to custom kernels.
RoyalDrew said:
Hey I've recently wanted to use the fast charge widget by Chad but I can't seem to find a decent kernel that supports it.
Is there a reason the feature is left out? I figured it would kind of be standard to custom kernels.
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Click to collapse
Working on bringing back into mine.
I used snuzzos all the time but he pulled it after 1.5. And 1.5 doesnt play optimally with one xxx 6.0.2. I miss it because I'm on a car charger more than a wall charger.
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texascfdad said:
I used snuzzos all the time but he pulled it after 1.5. And 1.5 doesnt play optimally with one xxx 6.0.2. I miss it because I'm on a car charger more than a wall charger.
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What car charger are you using that doesn't pick up as AC already? As long as you aren't using one that advertises iDevice support, it shouldn't need fast charge.
Snuzzo said:
Working on bringing back into mine.
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Thanks! Your kernel is normally what I run anyway!
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shrike1978 said:
What car charger are you using that doesn't pick up as AC already? As long as you aren't using one that advertises iDevice support, it shouldn't need fast charge.
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Some off brand charger. Idk. Now that I think about it the charger may be bad. It shows ac charging. It didn't act like it was charging at all the other day. Wouldnt keep up well in an area with no service. But the one in my personal vehicle and my wall charger do well. Lol either way I miss the fast charge.
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RoyalDrew said:
Hey I've recently wanted to use the fast charge widget by Chad but I can't seem to find a decent kernel that supports it.
Is there a reason the feature is left out? I figured it would kind of be standard to custom kernels.
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Click to collapse
Ermahgerd Kernel supports fast charge but read the first post instructions very carefully.
There are some ppl who say fast charge isn't all its cracked up to be. It does not make ac charge go any faster. I bought a Rezound compatible usb cord and an official HTC plug separately off amazon for like 30 altogether. Beats having to wait forever using another manufacturers charger.
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Make sure your charger exceeds the fast charge rate. A 2 amp charger would certainly be large enough. 1 amp would be too small.
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Just buy a real charger which follows the USB charging specs, and be done with it. Problem solved.
mike.s said:
Just buy a real charger which follows the USB charging specs, and be done with it. Problem solved.
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Follows the USB charging specs? So you mean 5V 500mA? I prefer a charger with 2amp capabilities, so I know there are no issues when using fastcharge. When the phone detects a car charger or computer USB port, the kernel regulates the current to 500mA or less. Telling the phone to pull more than 500mA from a computer or car charger will probably just damage the charger, depending on the rating.
But a two amp charger with fastcharge should charge at 1.25 amp or so, and it won't damage the charger.
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Car Charger

I currently have this car charger:
http://www.amazon.com/PNY-P-P-DC-UF...fkmr2&keywords=usb+2.0+car+charger+pny+2.1amp
When I first got it, I shorted the pins to force it to charge in AC mode. Now that I know it is capable of 2.1amps and our phone can accept similiar amperage, will I need a micro usb 3.0 cable for it to charge at 2.1amps? Or will my old galaxy s3 usb 2.0 cable be able to charge it at 2.1 amps as well?
Bump for update
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I use this dual USB car charger for my N3.....I purchased it for my S3 and its working fine for a long...and working well with N3 too...as far there is no issue with it ...it is capable of 2,1 A...so it works well for N3...but I am looking for a mount for N3 having in built application of charging....If you are known to some nice ones...then do share
y buy one on ebay very good and xip
tangsta35 said:
I currently have this car charger:
http://www.amazon.com/PNY-P-P-DC-UF...fkmr2&keywords=usb+2.0+car+charger+pny+2.1amp
When I first got it, I shorted the pins to force it to charge in AC mode. Now that I know it is capable of 2.1amps and our phone can accept similiar amperage, will I need a micro usb 3.0 cable for it to charge at 2.1amps? Or will my old galaxy s3 usb 2.0 cable be able to charge it at 2.1 amps as well?
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No, a USB 2.0 cable will charge at the same current as a USB 3.0 cable (1800mA with the screen turned off, 1200mA with it on).
If the max is only 1.8amp then why is our charger rated at 2amp?
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Overhead.
sent from my sm-9005.
Change the color to black and it's less than half the price. Isn't there an app that will tell you how much current it is drawing while charging?
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tangsta35 said:
If the max is only 1.8amp then why is our charger rated at 2amp?
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I believe there is also a loss of energy during the transfer of energy. The process is not 100% efficient.
Curb71 said:
Change the color to black and it's less than half the price. Isn't there an app that will tell you how much current it is drawing while charging?
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The app is in the Play Store and named Galaxy Charging Current
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