Yudda
Adventurer
Jim,
Thanks for the photos! I agree about the potential for damage on the rollable, so I am looking to secure a pelican case and dedicate it to the storage of these chargers and additional solar accessories.
Immediately i thought of Army Mortar ammunition cases.
http://www.armynavydeals.com/asp/products_details.asp?ST=2&SKU=BG156
Now i checked the Powerfilm website specs and the rolled diameter doesn't change regardless of size. I don't know how thats possible....but maybe something like this would work.
If not you could find larger mortar size cases.

Hope it helps,
rob