A Convair aircraft experienced a complete electrical failure during takeoff, resulting in propeller reverse failure and collision with an approach light tower. The pilot initiated an abort, but the propeller reverse failed to operate. This incident was likely caused by improper maintenance of the heater, inadequate inspection of the aircraft, and pilot-initiated improper operation of the powerplant and powerplant controls.A Convair aircraft experienced a complete electrical failure during takeoff, resulting in propeller reverse failure and collision with an approach light tower. The pilot initiated an abort, but the propeller reverse failed to operate. This incident was likely caused by improper maintenance of the heater, inadequate inspection of the aircraft, and pilot-initiated improper operation of the powerplant and powerplant controls.