Bye Aerospace and Oxis Energy have begun a 12-month collaborative program to develop lithium-sulfur (Li-S) batteries they believe will allow electric aircraft to fly between 50 to 100 percent longer on a single charge. Development work will involve both ground and flight testing of Oxis’s Li-S batteries on Bye’s existing eFlyer prototype.

According to UK-based Oxis, its Li-S technology will deliver a twofold decrease in the weight of batteries due to having a higher gravimetric energy density (in excess of 500 Wh/kg at 20Ah capacity) than lithium-ion batteries. This will result in increased flight durations, it claims.
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