A lot of pilots flying across country with an iPad/Tablet running their favorite navigation software run into battery problems.
The normal charging power supply units cannot keep up with charging the internal battery and running the unit at the same time.
All off the shelf units only put out a maximum of 2.5 amps when you need 3.0 to 5.0 amps to keep everything running.
A lot of off the shelf units also put out spurious noise which can be heard in the VHF radios. NOT GOOD.
The unit runs from 12 VDC aircraft power. This adaptor cable is supplied with the unit.
This is the finished unit in a silver metal case. On this side is the input from the 12vdc cigarette lighter cable.
On this side are the 2 3.0 Amp USB ports. Unit can output a maximum of 5.0 amps from each port.
Cost is $149.00.
Send an email if you would like to purchase one. I'll be back in Arizona by mid October to start building them.