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So I found an off brand charger that fits my phone

I found a random charger in my room that fits my captivate. However I'm a little worried it might damage it, the Samsung charger says it outputs 5v - .7A and the charger I found outputs 4.5v - 800mA.
I figure the lower voltage isn't a problem but the higher amp output worries me a little. Could anyone who knows more about electricity than me tell me if it would be safe to use? My Samsung cord is really loose and falls out easy, the other one is nice and tight :-D

I don't think it's a big deal...
Sent from my SAMSUNG-SGH-I897 using XDA App

I use at least 3 different chargers on my phone. As long as it is micro usb. Use my daughter's nook charger, my wife's backflip charger, and an old LG charger at work. No problems at all. P.S. - This is not advice, just fyi.

you need not worry about the Amperage, the higher the better.
it doesn't mean its gonna give an output of 800ma all the time but upto 800ma depending on the load.
But if the voltage is considerably high/low I wouldn't recommend using it.
The high voltage could damage it whereas a low voltage may not charge the battery properly.
PS: That charger should work for you.
______________________
Samsung Captivate
ROM: designgear's Cognition v4.2.2
Kernel: eXistZ's KB1 #7 beta

^^^^^^^^^^^^^^^^
what he said!

rohith hit it right on.
lower amperage is where you have a chance of damage, higher amperage means there is the ability to push more. As long as your devices get their draw requirement they are happy.
Sent from my SAMSUNG-SGH-I897 using XDA Premium App

Cool thanks, I did some quick Wikipedia research on volts and amps but wasn't 100%. Much appreciated :-D

If it doesn't have the same amperage as the stock charger, it will just charge slower. I charge off of my computer, some cheap Wal-Mart car charger (for GPS) and I don't have any issues.

[Q] charging the G2X with iphone charger?

HI everyone, hope thats the right forum
I have in my possession an iphone 4 charger, and since i dont have a dedicated G2X charger i was wondering if it is possible to charge the LG phone with Iphone charger?
thanks!

Well I thought iPhones use same charger as ipods which has a lot wider plug than an android charger. But if that's changed and it fits than plug it in and find out.
Sent from my LG-P999 using xda premium

I don't see it working unless you have some sort of an adapter. The G2x uses a micro USB port, and the iPhone uses a proprietary port.

please see bellow what charger i have. just need to plud the USB cord in the charger, since it have USB input.
so, technically it should work, but will this affect the battery in the long run? i mean, maybe the voltage\current values are different.

If it is a USB adapter then it should conform to USB standards and would then work. I think most of the previous responses assumed you meant a charger with the iPhone tip.
Sent from my LG-P999 using Tapatalk

The idea itself will not work, you can pick one up from Amazon or eBay for pretty cheap.
Sent from my LG-P999 using xda premium

Actually it's likely it won't work. Compare the amps on the G2x charger vs. the iPhone one (and just about any other generic USB charger). All the one's I have are different, lower, and don't work with the G2x. One of them, for some odd reason, makes the touchscreen not work at all when plugged in.

lilaliend said:
Actually it's likely it won't work. Compare the amps on the G2x charger vs. the iPhone one (and just about any other generic USB charger). All the one's I have are different, lower, and don't work with the G2x. One of them, for some odd reason, makes the touchscreen not work at all when plugged in.
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That is not correct, iphone charger will work technically, however it will reduce your battery life over time due to iphone charger are 1amp while g2x charger is 0.7Amp. Amps must meet to properly charge at the pace selected by manufacturer and battery specs. Lower amp takes time to charge, higher amp will charge fast but will reduce life.
Sent via MIUI-G2X

Mine is rate for 1AMP.
Sent from my LG-P999 using xda premium

nycelitemaster said:
That is not correct, iphone charger will work technically, however it will reduce your battery life over time due to iphone charger are 1amp while g2x charger is 0.7Amp. Amps must meet to properly charge at the pace selected by manufacturer and battery specs. Lower amp takes time to charge, higher amp will charge fast but will reduce life.
Sent via MIUI-G2X
Click to expand...
Click to collapse
How does it even fit? The ports are totally different. Perhaps an adapter?
Sent from my LG-P999 using xda premium

DON'T DO IT!!!! your phone will suddenly become just like everyone else's and you won't be able to do anything about it! your technology will become dumbed down, and you will becomea victim of conformity!
HEED MY WARNING!!!

Don't worry, using that iPhone charger/adapter won't turn your Android phone into an iPhone.
The iPhone charger/adapter is a 5 volt USB adapter, it will work. The battery will charge normally, there's a charge regulation circuit in the phone and protection circuitry in the battery which will ensure that the battery won't be screwed. I use a variety of USB power adapters which range in their current rating which is the maximum current the device is capable of supplying at the rated voltage (although the cheap adapters' output voltage decreases as the current output (load current) increases. The LG power adapter I have is rated at 4.8 Volts and 1 Ampere output. I use that, a USB port on my computer which is rated at 5 Volts and 1/2 Ampere (500 ma), and other 5V power adapters. I also use a variety of micro USB cables some of which are just for supplying power, not data, and they work too.

Core Memory said:
Don't worry, using that iPhone charger/adapter won't turn your Android phone into an iPhone.
The iPhone charger/adapter is a 5 volt USB adapter, it will work. The battery will charge normally, there's a charge regulation circuit in the phone and protection circuitry in the battery which will ensure that the battery won't be screwed. I use a variety of USB power adapters which range in their current rating which is the maximum current the device is capable of supplying at the rated voltage (although the cheap adapters' output voltage decreases as the current output (load current) increases. The LG power adapter I have is rated at 4.8 Volts and 1 Ampere output. I use that, a USB port on my computer which is rated at 5 Volts and 1/2 Ampere (500 ma), and other 5V power adapters. I also use a variety of micro USB cables some of which are just for supplying power, not data, and they work too.
Click to expand...
Click to collapse
Good info.
Thanks
Sent from my LG-P999 using xda premium

thanks for the informative reply Core Memory.
didnt think using iphone charger will turn my android into iphone
so, bottom line - it is safe to use that charger.
Thanks!!

un.droid said:
thanks for the informative reply Core Memory.
didnt think using iphone charger will turn my android into iphone
so, bottom line - it is safe to use that charger.
Thanks!!
Click to expand...
Click to collapse
Yes, it's totally safe. I've got a service manual for an LG phone which is substantially the same as the G2X and Optimus 2X which shows the battery charge circuitry. That circuitry regulates battery charging. Here's some more info regarding the battery:
90% = 4.05V +/- 0.05V
60% = 3.83V ditto
30% = 3.72V ditto
10% = 3.64V ditto
OFF = 3.42V
The battery voltage decreases according to the load current (milliamps) over a period of time. The higher the load current during a specific period of time, the quicker the battery voltage decreases; that's why it is important to have everything except the cell radio and the operating system off when the phone is in standby. There will be some background processes, etc., which are necessary too. Bluetooth, GPS, and WiFi quickly drain the battery. Automatic updating should be turned off always. If you're not expecting any calls, turn the phone off. Setup your phone to reroute received phone calls to your home or work phone, if the call is important they will leave a message, then pick up the messages at your convenience. Use a ROM and kernel which are known to have good battery life.

ive been useing the iphone dock to charge my g2x and it works fine lol no issue

How much over 5v. can the nexus 5 take

Moved from general sorry
I just bought a Anker 24W / 4.8A Dual-Port Car Charger. I bought this to replace a cheap $2 charger that I did not want to use on my nexus 5
I just tested the anker charger and it puts out 5.24v-5.29v. I know that does not sound like much but all my other chargers AC wallwarts, and even the cheap $2 car charger all put out 4.95v-5.02v.
Should I go a head and use this anker car charger or should I return it? Thanks.

That's just how much the charge puts out. The phone may not accept that much input.
Sent from my SAMSUNG-SGH-I337 using xda app-developers app

Typically there is a boost/buck or other relatively efficient voltage regulator in the phones that manages the battery charging, so the 5% "over-voltage" that you are seeing shouldn't be an issue.
I'm guessing you measured that with no load -- most wall-warts run a little high without load, and then a little low at full load, so they can claim good regulation (+/-5%, for example) and a high current capacity. The change is due to internal resistance of the supply, something that you can compensate for, but can't ever get rid of.

LZLandingZone said:
That's just how much the charge puts out. The phone may not accept that much input.
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
Click to expand...
Click to collapse
Only when talking current. Voltage is completely different.

jeffsf said:
Typically there is a boost/buck or other relatively efficient voltage regulator in the phones that manages the battery charging, so the 5% "over-voltage" that you are seeing shouldn't be an issue.
I'm guessing you measured that with no load -- most wall-warts run a little high without load, and then a little low at full load, so they can claim good regulation (+/-5%, for example) and a high current capacity. The change is due to internal resistance of the supply, something that you can compensate for, but can't ever get rid of.
Click to expand...
Click to collapse
Thanks,
No I measured with a load. I have a voltage current usb meter.
http://dx.com/p/usb-av-usb-power-current-voltage-tester-translucent-blue-silver-235090#.Uu2NRXddWLc
I just did another test. This time with my phone almost at 95% full. I got 5.33v while sucking down 332mha.
Im sending it back. I tested every charger brick and several other devices in my home. nothing came even remotely close to 5.3v
USB specs are 5.0v +-0.25% so I should see no more then 5.25v.

How to stop battery from charging

Hey guys, does anyone know a tweak where my phone will stop charging at like 99% so that when I charge overnight, it doesn't over charge? Or is this already a feature in many custom kernels such as elementalx
Sent from my Nexus 5 using XDA Free mobile app

It's a feature of the phone itself. Don't worry about it
Sent from my Nexus 5

With all my phones, I've always left them charging overnight. As jd1639 says - they are designed to ensure they are not overcharged. This is both to protect the phone and also not to waste electricity.
I use an old Motorola charger by my bedside which is rated at 500 mah. As it's going to be plugged in for 7 or 8 hours, it might as well charge slowly! It's better for the battery that way - maybe see if you can pick up a lower-rated charger if you want to be extra careful.

surrealjam said:
With all my phones, I've always left them charging overnight. As jd1639 says - they are designed to ensure they are not overcharged. This is both to protect the phone and also not to waste electricity.
I use an old Motorola charger by my bedside which is rated at 500 mah. As it's going to be plugged in for 7 or 8 hours, it might as well charge slowly! It's better for the battery that way - maybe see if you can pick up a lower-rated charger if you want to be extra careful.
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Click to collapse
That's actually worse for the battery, being charged too slowly
Sent from my Nexus 5 using Tapatalk

Ben36 said:
That's actually worse for the battery, being charged too slowly
Sent from my Nexus 5 using Tapatalk
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Click to collapse
I've not heard that anyway, but is 500 mah "too slowly"? That's the output you'll get from a USB drive.

Ah right... Just looked it up. If it's an ac wall charger. It's ok. If it's a usb port they generally give out less voltage (around 4.2-4.5) so your battery won't last as long between charges
Sent from my Nexus 5 using Tapatalk

Ben36 said:
Ah right... Just looked it up. If it's an ac wall charger. It's ok. If it's a usb port they generally give out less voltage (around 4.2-4.5) so your battery won't last as long between charges
Sent from my Nexus 5 using Tapatalk
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Click to collapse
If the battery is fully charged it shouldn' matter what voltage was used to get there. A full charge is a full charge.

marleyfan61 said:
If the battery is fully charged it shouldn' matter what voltage was used to get there. A full charge is a full charge.
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Click to collapse
This isn't true. A charger only works by applying a voltage to the cable which causes electrons to flow into the battery. The N5 battery is at full charge at 4.2V. If you're charging it with a supply that is running at less than 4.2V it will only charge up to the voltage applied.
Edit: I guess to clarify I should say that you're right that a "full charge is a full charge" but you will never get to a full charge if you are applying too low a voltage. And keep in mind that if your USB port is only providing 4.2A there is a voltage drop across the wire so you would end up with a lower voltage at the battery.

marleyfan61 said:
If the battery is fully charged it shouldn' matter what voltage was used to get there. A full charge is a full charge.
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Click to collapse
That's ampage i think. Ampage will gain with charge. Voltage will always stay the same
Edit -
http://batteryuniversity.com/learn/article/charging_from_a_usb_port
Sent from my Nexus 5 using Tapatalk

[Q] DIffrent Charger

Well I have ordered a cable to charge my nexus 5 that marked as high speed charger reachs 3A, and a wall charger that reachs the same 5V 3A
This should allow me to charge my nexus 5 with 5V and 3A as noted in the cable and the wall charger.
My question is if it would damage my device to go that high with the amperes
thanks in advance

itaypro12 said:
Well I have ordered a cable to charge my nexus 5 that marked as high speed charger reachs 3A, and a wall charger that reachs the same 5V 3A
This should allow me to charge my nexus 5 with 5V and 3A as noted in the cable and the wall charger.
My question is if it would damage my device to go that high with the amperes
thanks in advance
Click to expand...
Click to collapse
Bumb, help me please

From a non-expert position, just what I've read over the years and my experience:
First, I highly doubt the Nexus 5 will "absorb" so much power. Usually, there is a chip that limits how much power it can take, let's say 1.5A.
Secondly, if it took all 3A, it would:
Be very damaging for the battery on the mid-term and long-term
The battery would last less hours than charged at a normal, slower pace (less A)
So I don't recommend it. But there is a lot about this on Google.

itaypro12 said:
Well I have ordered a cable to charge my nexus 5 that marked as high speed charger reachs 3A, and a wall charger that reachs the same 5V 3A
This should allow me to charge my nexus 5 with 5V and 3A as noted in the cable and the wall charger.
My question is if it would damage my device to go that high with the amperes
thanks in advance
Click to expand...
Click to collapse
Nexus 5 can pull around 1.5-1.6 A only at max I guess. Even if you charge the phone via 3 A, it cannot pull that much. A higher rated charger will not damage the battery as long as the voltage is rated which matches with the phone's specs. Amp is pulled and not pushed, hence the N5 can pull only to the extent it can pull irrespective of the output Amp of the charger.

Electric items draw the amps they need. They can not be damaged by a high amp charger. What is dangerous is too many volts. That will ruin the device. All ways stick to the recommended voltage. I'm using 5vts and 2.1amp charger. Get the the # ampere # app from the App Store. It really shows which charger and lead is best. Leads are very important. You can use the best charger but with a rubbish lead it wont be any use. The wire in my leads is 20guage. Tyne best. I got 5 off Amazon UK They are by "Volutz". I noticed a massive difference. A out a third more power was getting through compered with cheap ones
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