the striker is a 100watt bulb you don't need to change it, its the amps on the battery which determines how long the power lasts a 14amp will last about 4 hours depending how long you leave it on
thanks mate wont change it,got a 18 amp at the moment how long do you thick that will last me
give them a raw whole egg shell and everything but only give them as a treat not all the time mate,also you can give them chicks like what they feed hawks they like them alot too