Sion Power’s EV Battery 400 Watt-hours per kilogram is a long-awaited minimum expectation for what it will take to get electric aviation off the ground. Sion Power® of Tucson, Arizona will introduce its Licerion® 17 Amp-hour pouch cells at the Battery Show North America in September – claiming to fulfill that expectation. The large-format pouch cells come in a compact 810 Watt-hours per liter size, last over 800 cycles and can be charged to 80-percent of their rated capacity in 15 minutes, according to Sion. Sion Power is shifting from its lithium-sulfur chemistry to lithium-metal technology. Their Li-S cells powered Airbus’ Zephyr® 7 HAPS (High Altitude Pseudo Satellite) to a record for continuous flight. According to Tucson Tech, “In 2014, lithium-sulfur batteries custom-made by Sion helped power Airbus’ Zephyr 7 solar-electric unmanned plane to fly for 11 days on sun power during the day and battery power at night.” From Lithium-Sulfur to Licerion® In a paper on the subject, Sion …