What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) The aircraft battery was weak when the pilot attempted to start the airplane for a flight to butler, PA. The pilot elected to "jump start" the aircraft and was successful in doing so. When the pilot rotated from the runway and selected the landing gear to its "up" position, a complete electrical failure was encountered and he decided to return to the airport of departure. The pilot accomplished the before landing check list but neglected to accomplish the emergency landing gear extension check list, causing the aircraft to land with the gear in a transient position. The airplane sustained minor damage to its underside, the propeller, and engine.
As the FAA filed it
(-23) THE AIRCRAFT BATTERY WAS WEAK WHEN THE PILOT ATTEMPTED TO START THE AIRPLANE FOR A FLIGHT TO BUTLER, PA. THE PILOT ELECTED TO "JUMP START" THE AIRCRAFT AND WAS SUCCESSFUL IN DOING SO. WHEN THE PILOT ROTATED FROM THE RUNWAY AND SELECTED THE LANDING GEAR TO ITS "UP" POSITION, A COMPLETE ELECTRICAL FAILURE WAS ENCOUNTERED AND HE DECIDED TO RETURN TO THE AIRPORT OF DEPARTURE. THE PILOT ACCOMPLISHED THE BEFORE LANDING CHECK LIST BUT NEGLECTED TO ACCOMPLISH THE EMERGENCY LANDING GEAR EXTENSION CHECK LIST, CAUSING THE AIRCRAFT TO LAND WITH THE GEAR IN A TRANSIENT POSITION. THE AIRPLANE SUSTAINED MINOR DAMAGE TO ITS UNDERSIDE, THE PROPELLER, AND ENGINE.