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Thread: What is iphone charge voltage?
12-18-2007, 09:37 PM #1What is iphone charge voltage?
I bought an iphone FM transmitter/charger for the iphone. I plugged it in and it works but I just looked at the back of the charger it said 12 volts 1 amp output. Will this 12 volt charger burn up the iphone? I thought I read somewhere that 12 volt charging the iphone is not good and will burn out the iphone. Thanks
12-19-2007, 10:05 PM #2
12-19-2007, 10:19 PM #3
crap...sorry...hold on I'll update this real quick im googling it for ya.
EDIT: here you go.
read what this guy says. apparently its not a good idea. hope you kept the receipt!
Last edited by iPhoneHero; 12-19-2007 at 10:23 PM."Somebody turn on the lights...its getting little to dark in here...I can't see you...when I'm dreaming...I can't see you....I can't see you..."
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12-19-2007, 10:58 PM #4
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12-19-2007, 11:21 PM #5
Thanks for the quick answer.
12-20-2007, 05:02 AM #6
Careful even charging the iPhone on an iPod Touch charger. Someone please confirm this, but I hear that the Touch charger is 10v while the iPhone's is 5v. A buddy accidentally charged his iPhone on the Touch charger and bricked it. It took me 9 hours to get his iPhone up and running! He didn't tell me about the charging until I asked him if he charged it on the Touch charger. He said, "Yeah, that's when the phone froze."
The unit is OTB 1.1.2, fully working with a TurboSIM.
01-05-2008, 04:40 AM #7oops worried now
I'm using an ipod charger for my iphone its 13.8 volts and seems to work fine on my week 37 phone running 1.1.1 but having read this I'm worried it might shorten the battery life, does anyone have experience of this and also it would be good to know what other chargers are recommended.Eric's iPhone 4 4.01 offically unlocked
01-07-2008, 03:25 PM #8
01-07-2008, 07:23 PM #9
01-07-2008, 07:41 PM #10
current is a different thing. you will need at least 1A of current any voltage to charge properly. this is why you may have a problem with a USB charge, it's only 5V and limited current. The internal circuitry will manage the voltage and current to charge the battery just fine, using a car charger.
01-08-2008, 11:26 AM #11
01-08-2008, 04:39 PM #12
All i want is someway of charging my iphone in my car i'm tempted to go out and buy a 240v power inverter and mount it under my car seat....
01-09-2008, 12:11 PM #13Eric's iPhone 4 4.01 offically unlocked
01-09-2008, 04:23 PM #14
FWIW it tried one of those USB adapters that was rated at 5.0v DV and 1amp and it wouln't charge the phone.. I don't get it it's the same specs as the AC charger that comes with the phone...
Anyway this charger will be my last try next i'm getting a dc to ac power inverter
01-10-2008, 12:26 AM #15
your going through the same steps as me I'm sure you will be just as happy with the result as I was. with no need for the power invertorEric's iPhone 4 4.01 offically unlocked
04-25-2008, 04:01 AM #16
So I understand that I should NOT use my 9,5V 500mA +/-5% with my iPhone... I haven't done so yet because it doesn't comply with the original Apple charger...
Will this ruin the iPhone? Shorten battery life? Damnit, I was sold these chargers on Amazon and it stated these are iPhone chargers...
04-25-2008, 10:03 AM #17
Just remember that there are two voltages for a car charger one is the input voltage that is most of the time up to 13.8volt and there is the output voltage that is more important. It should not go above 5volt. Most have a rating of 5volt and 1000mA = 1.0 amp. You do not need 1000mA as for example a usb port of a pc or laptop supplies only 500mA and that is enough to charge the iphone.Don't be shy if I helped you use the Thanks button, I do it.
04-25-2008, 11:22 AM #18
Well both my car charger and the home charger say "Output: 9 . 5V 500mA +/-5%" so I think I'll leave it... I wonder how they sell it as an iPhone charger... They also say "Charger for iPod" and I though all iPod and iPhone chargers ought to be the same... unless older versions used this voltage?
Thanks for your help, too bad I can't return the chargers
04-25-2008, 12:17 PM #19
Some ipod's use 10volts to charge, and I remember reading some people burning up their iphone batteries. The iphone will handle higher voltage to some degree but double the recomended voltage is dangerous.Don't be shy if I helped you use the Thanks button, I do it.
04-26-2008, 05:14 PM #20
how come my powerpack from noma dosent charge my iphone the output is 5.8 volts?