Samsung themselves, say it's 5.3 volts.
Plus I can read 5.3 volts printed on the charger.
Also Amazon shows it at 5.3 volts:
(Amazon.com product link shortened)
As does Wireless Ground:
Whatever XDA is, they show it at 5.3 volts also:
On Wednesday, August 13, 2014 9:24:42 AM UTC-4, Elechi Amadi wrote:
As others have said, it's not compliant with the USB charging spec, but
it's also only higher by a very slight amount, which should not matter.
The USB spec is for 4.75 to 5.25. Samsung is at 5.3. That could just
be someone writing the spec, rounding up and maybe the device itself is
compliant if you measured it.
In any case, any USB 2.0 charger will work.
["Followup-To:" header set to comp.mobile.android.]
The USB data sockets on computers and USB Hubs often can't provide more
than 500 mA (0.5 A). That's why some gadgets, eg USB disc drives,
sometimes have a cable with two USB plugs - to get twice the power.
The 'next' USB standard, USB 3, will allow for more power to be
delivered. Meanwhile, smartphones and tablets are usually provided with
mains power adaptors which can provide more than 2 Amps, but with USB 2
style sockets so that the same USB cable can be used for charging (from
a mains power adaptor or car adaptor) and for data connections with
computers (which are very unlikely to have USB 3 sockets yet, as the
basic specification has only just been fixed). It's possible that some
computers or USB hubs may be able to provide 1 Amp or more from their
USB 2 sockets, if a device is plugged in that can use it.
The difference between "5.3 volts" and "5 volts" in the markings and
description of the mains chargers being argued about here, is probably
down to differing national regulations rather than to any actual
difference in the chargers themselves. USB chargers, and the power wire
in a computer's USB socket, is required to have its output "between 4.75
volts and 5.25 volts" according to the international standard; the
nominal voltage is 5. But I can imagine that some countries might
require that the device be marked with the maximum voltage it can
produce - and if the same country's laws round all voltage limits to one
decimal place, you end up with a marking of "5.3 volts" for a device
that does in fact produce no more than 5.25 volts (if you can find a
volt meter accurate enough to tell the difference).
If you want to have a smartphone in the car being charged up even while
it's in use (for navigation or music or whatever) then make sure the car
USB charge adaptor can manage 2 Amps (some can't).
If you get a branded item from the same shop as you got the handset
from, or a reputable dealer of that brand, there shouldn't be any
problems. Going for a cheap alternative, especially a 'fake', may well
end in tears.
On Thursday, August 14, 2014 8:19:42 PM UTC-4, Whiskers wrote:
A few of us were on the rounding off idea, but you've come up with
a possible good reason for having to do it. IDK if it's ture or not,
but it certainly sounds like a reasonable possibility.
Only disagree with the last part. I've bought a few chargers off of Ebay,
for <$5 and have had no problems. If you buy it from the "dealer", eg
at the phone carrier store, it's typically $25+, which seems a bit steep
for a 5v charger.
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