According to the pilot he had purchased the airplane and planned to fly it across the country "via the southern route." The aircraft seller informed the pilot that the battery held a limited charge, but asserted that the airplane could be flown if the pilot charged the battery and disengaged the master after takeoff. Prior to departure, a mechanic charged the battery for about an hour. The pilot had planned to depart, fly for about 4 hours and then begin to look for an airport to land and obtain fuel. Once he reached his cruising altitude the pilot disengaged the "master." After about 4 hours of flight and in nighttime conditions the pilot found an airport beacon, reengaged the "master" and attempted to activate the runway lights. After several unsuccessful attempts and with the cockpit lights beginning to dim the pilot elected to conserve battery power and find a new airport. About thirty minutes later the pilot found another airport beacon. The airplane "ran out of gas" over a residential area three miles from the pilot's final destination. The pilot made a turn to line the airplane up with a street; however, during the descent to land the airplane collided with tree tops and subsequently impacted the ground resulting in substantial damage to the engine firewall and both wings. The pilot reported the "electrical system failed in the last few minutes of flight" as the only mechanical failure.