12volt iPad charger

kevin look here
http://www.ebay.com.au/sch/i.html?ul_noapp=true&_fromfsb=0&_nkw=usb+socket&_trksid=m270.l1313

kevin
There are many flush mounted devices with dual amperages listed there.
Some fit into a vacant dash switch with 1amp and a 2.5amp. usb.
I have a remote fitting with 4 cig. sockets and two separate usb sockets with different amps. fastened low down on the console and I charge and run my ipad from that.

This may suit as it is 2 amp output.

Ticky Dickies

Kevin
The ipad 240v. wall charger has a 5v.- 2.1 amp output.
I have just connected my ipad to the 2.1amp usb output in the car and charge has gone from 79% to 85% since I last replied.
Jaycar has a hardwired under dash panel mount 5v. / 2.1amp output device.
I cannot see why this will not work for you.
There are no higher output usb's.

I will have to check, BUT, for what it may be worth, my DMax has a flying lead USB female in the glove box. I plug the iPad into that and close the glovebox. As said, I have not checked but that outlet seems to provide fast charge, as you require. IF, the DMax arrangement is really a fast charge outlet, that may be a lead to a supply source.

Iza

This article may help explain your problem
http://www.epanorama.net/newepa/2010/08/18/apple-charger-secrets/
The July 2015 edition of Silicon Chip magazine has a project building a 12v to 5v USB charger. Jaycar may have this a kit by now.

Kevin
Double check your statement about JCar.
I bought their standard USB plug that goes into the cig lighter. It has two USB outputs, one normal and the other at 2.1 A for the ipad. I use it all the time for the ipad, works every time
CJ

Have a look on the Narva website at product code 81134BL. It's a heavy duty dual USB socket with a 5volt 2.5 amp output. I have one of these and it works very well, charges my iPad & my phone at the same time. Narva.com.au

The point that the OP, Kevin, has made repeatedly that is not being grasped by some responders is that the manufacturer's current rating of some USB chargers may not be accepted by some devices unless the correct data voltage is imposed on the D+ and D- pins. Apple products are the most notable (naturally) but Samsung tablets and others also require this data to accept full charge. Without it they will charge at a reduced rate.
As an example, the Samsung tablet that this is being written on is also used as my navigation map and without the correct Data voltages the charge rate will not keep up to the constant operation demand.

12 volt-to-USB chargers designed and sold specifically for these products should conform to this need but 'general purpose' 5V USB chargers will not. The required Data Voltages on pins 2 & 3 are achieved by a pair of resistors for each pin arranged as voltage dividers but unless you have some electronic skills it can be difficult to DIY the necessary modification to the USB output socket.

In short, the current rating marked on the USB charger is not the whole story.

Further to all that has been said above, USB charging problems have abounded in threads on this forum in the past. Just search "USB" and you will find them.

I raised the compatabilty issue in Thread 105046 in Nov 2013 and you will find in that thread an extract from Silicon Chip magazine providing details of the required Data Voltages for various machines together with the resistor values used to create those voltages. The subject was revisited in Thread 111013 in Feb 2015 with further information.
The Silicon Chip article is very useful for anyone wishing to modify or construct their own custom charger. The full constructional article can be obtainedfrom Silicon Chip archives.

I see in those Threads promotion of some USB adaptors, notably by ABR, promoting such as "5 Amp" devices. This (and similar devices) have several USB outlets of say 1.2 Amps each which amount to 5 Amps IN TOTAL ONLY, not 5 Amps from any one outlet. There is much mis-information offered on this subject

Gooday,
Have you explored one of those storage devices, you could have it connected to charge and run your piece of gear out of the other end at the same time,
I have one I bought in the US late last year and it is great, used it on the plane on the way back from Hong Kong a few months ago as the on-bpoard aeroplane USB socket would not fire up the I pad.
Used my portable supply unit to finish what I was doing. Maybe worth a try?. You will need a mini USB to std USB lead to connect for charge. Have not tried it but the little Storage unit is a PNY brand cost me $20-00, has a digital charge read out, 2 different output ratings and holds 100% for months when sleeping.
Cheers,
Boroma 604.

OK, patch cable made. Mark 1 version. These were done with a Jaycar MP3616. One shows the iPad plugged into the 2.1A outlet, the charge is 0.86A. The other shows the iPad connected to the 2.1A outlet via the patch cable which is supplying the required D+,D- for high charge. Even with the voltage drop of the 5v down to 4.8 from the cable loss it is still charging at 1.62A.