I recently made a battery case for one of my i1's. I have 10 batteries and placing all of them in the GPC landing mode case made a bit of exrta weight, not to mention that I could see the foam from the case somewhat "expand" in the back of the case and at times made the Inspire rear legs catch on the case as i put the i1 back inside. The case I used was a smaller 18 inch foam case. Not much to it other then having to pluck and cut the foam to fit. The total I spent was around 30$. Here is where I ordered the case from. 18" Black Tactical Weatherproof Equipment Case | 22-24115 (2224115) | Distributed By MCM I have ordered from MCM before and the shipping and quality of the case's have been top notch for the price. I figured I would post just in-case others have collected numerous batteries.