According to their FAQ page, it runs on 100 Volts to 200 Volts, Alternating Current only. If using batteries to provide AC power through an inverter, a "small" inverter will power 1 square foot (.0929 sq Meter). A "large" inverter will power 2 square feet (.186 sq meter). Current draw is 1 milliamp per square inch, so 1 square foot is 144 milliamps.

Doesn't sound practical. Intense flashing LEDs are a better bet. At least they won't require an extension cord.