Amp draw for GDL 39 & I Pad?

[C-FAH Q]

Originally Posted by LyleM

Thanks guys. I learn something with this project every day.

Take a look at this http://www.commitlift.com/usbchargers.html
I installed one and it works great.

[D_Jones]

SteinAir is now selling USB Chargers for Ipads, Iphones, Ipods, etc.. They offer two types of chargers: a black DC power plug insert charger and a black Panel Mount charger.

12vdc adapter, 5v @ 1.5a output

[Cipher]

Want to jump in on this thread and give my two - cents.

On our trip to OSH last year from Washington State -our iPad battery quickly drained. We were using the ELF GPS with it. I had it plugged into a lower priced USB adapter charging less than 500ma - or half amp. My wife was using it in the back seat - until it stopped working. I would strongly suggest only going with the 2.1 amp device so it will stay on during flight and still charge. Of course when the iPad is all charged up the draw on the battery declines as it's completed. I threw away all my USB port adapters that were less than the 2.1 amp ones as worthless. Hope this helps - so max drain on a iPad is 2.1amp and add 15% that you should account for in your calculations. Also -if you have Go Pro cameras - or other devices using a USB port to charge with. The 2.1 amps covers these with extra power to spare. You can charge two at the same time.

[LyleM]

I ended buying the 2.1 device awhile back. It sounds like I did the right thing. Thanks