Re: what did you do to your motor bike today? Check for 12v SLA solid batteries at a car battery store that sells refurbished batteries (rebuilt). The one here sells them to me for $5 from a hospital supply. They are out of date so they can't be used for life-critical equipment, but still good for hobbys like CB radios or bike lights. Use some kind of LED bulb with the spotlight, or under 15 watt like a halogen or interior automotive bulb, or it will just kill off your battery in no time.