i bought an ordinary car battery from a breakers for £10 and a split charge relay and i have never charged it. its always in the back of the van and it charges as i drive works fine for me
Car batteries work differently to leisure batteries, they are designed to give a lot of power, over a very short period of time, as opposed to leisure batteries which are designed to provide low power consumption over longer time.
We have 2 110amp leisure batteries, (i now travel 40 mins from home so keep spare incase the one goes flat), but one battery lasts 2 operators on 2 pumps working 2.5 days a week about 3-4 weeks. My controllers start to flash and cuts out when gets too low, tho i suppose i should charge before gets quite so low, its still above 12.5 volts so isnt too bad. THese have lasted nearly 2 years and still last as long as did at beginning (when i used to charge every night, lol).
Been meaning to put split charger in but dont know where to begin, might get mechanic to do it next service.....