The Coolspool Combination GPU has been developed to provide continuous power for avionics/air conditioning and for starting most DC turbine and turboprop aircraft. This small and easy-to-move GPU is completely user configurable.

Available in three different configurations, (100A, 200A or 300A) the Coolspool Combination utilises DC power supplies and high-discharge batteries to deliver instant ripple free power for turbine starting. The output voltage can be manually adjusted by the operator ensuring the GPU delivers the desired output voltage to the aircraft. Each Coolspool Combination GPU is supplied with power supply status LEDs, output voltage and current indicators and battery state-of-charge monitoring system.