1996 Honda Civic

My car was struck by lightning and now the battery will not hold a charge, the speedometer does not work, and the check engine light stays on. I took it to a mechanic, but he is unsure of the source of the problem. He changed the battery, but that only worked for about an hour. The car began to stall and finally stopped and refused to start. Do you think the problem may be electrical as well as a computer problem? Thanks for your response.