[jclark003]

There is no maintenance required that I am aware of on most Fireboy systems and if the green light is on it is most likely charged.  However it is a good idea to have a fire protection company regularly check and tag the system. My insurance company requires that my automatic fire suppression system be "in good working order" so each spring I have a company check and tag the fixed and handheld devices. if you can get several boat owners to do it at the same time the price should be reasonable. For me the $75.00 is well spent knowing all my extinguishers are ready to go and if the worse should happen I have documentation that the fixed system was inspected. 

Hope that helps