Abstract: A rechargeable lithium-ion battery includes a housing and a battery cell arranged in the housing. The battery cell includes a liquid electrolyte, a composite anode, a composite cathode, and a separator arranged between the composite anode and the composite cathode. The liquid electrolyte includes an ionic liquid, an organic compound, and a lithium salt. The composite anode includes a metal current collector coated with a layer which includes an active material and a binder. The composite cathode includes a metal current collector coated with a layer which includes an active material and a binder. The active material of the composite anode is a lithium titan oxide (LTO). The composite cathode, the composite anode, and the separator, when immersed in the liquid electrolyte, are heat resistant at temperatures of above 150° C. The rechargeable lithium-ion battery is rechargeable in a temperature range of from ?30° C. to 150° C.