TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Battery Module: The non-conductive oil comprises mineral oil. The fluid comprises a coolant, where the coolant comprises at least one of ethylene glycol and propylene glycol. The fluid comprises a refrigerant. The cooling manifold defines an interior region and has an inlet port and an outlet port, where the cooling manifold is constructed from at least one of aluminum, copper, silver, and gold. The housing is constructed from plastic. Preferred Battery System: The battery system of (1) further comprises a temperature sensor configured to generate a first signal indicative of a temperature of the non-conductive oil; and a microprocessor operably coupled to the temperature sensor, the microprocessor configured to generate a second signal to induce the compressor to pump the refrigerant into the cooling manifold when the first signal indicates the temperature of the non-conductive oil is greater than a threshold temperature level. The cooling manifold defines an interior region and has an inlet port and an outlet port. Preferred Method: In the method for cooling a battery module, the fluid is a refrigerant, and where the method further comprises generating a first signal indicative of a temperature of the non-conductive oil utilizing a temperature sensor; and generating a second signal to induce a compressor to pump the refrigerant through the cooling manifold when the first signal indicates the temperature of the non-conductive oil is greater than a threshold temperature level utilizing a microprocessor. The fluid is a coolant, where the method further comprises generating a first signal indicative of a temperature of the non-conductive oil utilizing a temperature sensor; and generating a second signal to induce a pump to pump the coolant through the cooling manifold when the first signal indicates the temperature of the non-conductive oil is greater than a threshold temperature level utilizing a microprocessor.