

Just in case anybody else wants to do this ...the 12v rear socket from a 407 I'd a direct swap
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The USB specification is 500mA for USB1 and USB2, raised to 900mA for USB3. The USB charging specification, which pre-dated USB3 by a short time allows 1.5A, but only while not transmitting data.gumby6371 wrote:As a little extra info, PC USB ports are 1 amp
Apple were one of the first major companies to use USB for transmitting higher amounts of power, shoving 2A down the wire before the USB Charging Specification was released. Since this is 4 times what a PC port can deliver, they only pull 2A when they've determined that a capable power source is available - as indicated by specific voltages on the data lines. Apple devices will fall back to 500mA of charge current if they can't get the full 2A unless you connect them to a source which claims to deliver 2A but is dodgy. In these instances they'll refuse to charge instead of letting you set fire to something.Most devices will just charge a bit slower but some may throw their teddy if it's not perfect,I dare to say Apple products will probably do this as I'm convinced the firmware will only accept accesories that cost your left nut and first born child!
Wrong. It is the device being charged which determines how much power to take. You'll never blow a device rated for 1A by plugging it into a 10A power source, however you WILL blow up a 1A power source if you connect something to it which draws 10A. Current is pulled, not pushed.As a second note your 1.5 amp phone charger may well pop your 1 amp USB charged device so keep an eye on which one your using as slow charging is much better than 'BANG'
Ohh, nicely done sir!hallsie wrote:
Just in case anybody else wants to do this ...the 12v rear socket from a 407 I'd a direct swap
rwb wrote:Must remember to keep you lot out of the back of my 407![]()