Quick question about wires - Page 4

HarryT · 02-24-2013, 05:02 AM

Quote:

Originally Posted by latepaul

I've found that whilst the cables are generally interchangeable (see caveat re Kobo in my previous post) that chargers are not. The voltage is always the same - well it would be that's part of the USB standard - but what matters is the amperage. My nexus 7 charger is 2amps and I think my phone one is 1amp but some of the other devices have 500mA chargers.

Yes, it's certainly true that, generally speaking, tablets have 10W chargers, and readers 5W chargers. I can charge my Kindle from my iPad charger, but not vice versa.

MikeB1972 · 02-25-2013, 05:22 AM

I am not an electrical engineer, nor do I play one on TV, however, a device will only draw as much current as it needs, so the 2A nexus charger may charge things faster (or not) but it won't blow them up

My electronic cigarette batteries charge much faster with the nexus charger, my Sony 650 doesn't give a d@mn and putters along at it's own speed.

book64 · 02-26-2013, 08:26 AM

Quote:

Originally Posted by MikeB1972

I am not an electrical engineer, nor do I play one on TV, however, a device will only draw as much current as it needs, so the 2A nexus charger may charge things faster (or not) but it won't blow them up

My electronic cigarette batteries charge much faster with the nexus charger, my Sony 650 doesn't give a d@mn and putters along at it's own speed.

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02-25-2013, 05:22 AM	#47
MikeB1972 Gnu Posts: 1,222 Karma: 15625359 Join Date: Jul 2009 Location: UK Device: BeBook,JetBook Lite,PRS-300-350-505-650,+ran out of space to type	I am not an electrical engineer, nor do I play one on TV, however, a device will only draw as much current as it needs, so the 2A nexus charger may charge things faster (or not) but it won't blow them up My electronic cigarette batteries charge much faster with the nexus charger, my Sony 650 doesn't give a d@mn and putters along at it's own speed.