Lithium-Sulfur (Li-S) batteries, with sulfur as cathode and Li metal as an anode, with a theoretical capacity of 1667 mAh/g, will satisfy the demand from the aviation industry and accelerate the commercialization of batterybased aircraft . Besides its energy density, rate performance for battery-based aircraft also plays an important role as good rate performance of Li-S batteries will accelerate its wide adoption within battery-based aircraft. However, the community recognizes that operating temperature plays an important role for LIBs and Li-S batteries . Moreover, Previous studies revealed significant heating effects of LIBs under higher charging rates and higher operating temperatures would deteriorate the solid electrolyte interphase (SEI) interphase formed on the anode and shorten the cycle life. As SEI formed on Li metal anode also plays an important role within Li-S batteries, it is necessary to probe the heating effects of enhanced charging rates on Li-S batteries. Besides, high operating temperature for LIBs and Li-S batteries will cause safety concerns: thermal runaway for LIBs and possible burnup for Li-S batteries.