Found on CNET; still waiting for price and release date.

Liliputian Systems' USB device does not have a name yet but, it's about the size of a smartphone. Its fuel cells, powered by butane, are the size of a cigarette lighter.

Yes my mophie is awesome but I regularly run out of battery.

I need stronger portable battery backup than iGeek 9900mAh large capacity portable charger ($62) and the Universal Gadget Wrist Charger ($45).

I have phenomenal power needs.

WANT.