hey I'm trying to program a custom tune on my 2007 f150 5.4l with the sct itsx every time I try to upload the tune to my truck it say programing unsuccessful low vbatt(17.1a). I'm wondering if anyone knows why it keeps saying this?

 

Do you have a battery charger if so try hooking it up while installing your tune

 

I charged it all day and when I was trying to upload it I had it plug in to my truck, computer, and a 120 outlet it says the same code