Lithium-sulfur Pegasus test reports nearly two hours and more than 75 km
Li-S Energy, V-TOL Aerospace and Halocell Energy reported today that their Pegasus test aircraft completed an endurance flight of almost two hours and more than 75 km on one lithium-sulfur battery pack in Queensland. The aircraft also carries a perovskite solar array. Li-S Energy says the same cell mass produced about 80% more range and flight time than an equivalent professional LiPo pack in its comparison.
Wed, 30 Sep 2026
If the battery result survives independent validation and repeated cycling, lithium-sulfur could open useful endurance gains for mapping, inspection and environmental monitoring without simply increasing pack mass.
The missing engineering data are cycle life, pack-level specific energy, discharge profile, thermal behavior and the exact LiPo baseline used for the 80% comparison. Treat the published gain as a vendor test result.