Thanks for your suggestions. So Yokohama and Panasonic eh? And yokohama lasts 4 years? hard to believe that one, except maybe if they're the lead acid types. They're cheaper than what I'm using now, actually so I'm curious if they are the miracle cheap MF batteries they're supposed to be. But I'll definitely consider it if there's a lot of people vouching for it.
Izso, I have nothing so extreme in terms of ICE, and I'm not even an ICE enthusiast but it seems my maintainance free batteries just don't last past a year anymore. They used to last about a year and a half to two, but these past couple of years, only a year. Considering they cost about RM200 or so each, that makes it worth a RM400+ battery for two years for worry free use. I assume that since you guys have large power draws and more likely to reach high levels of DOD (depth of discharge), what batteries you use that doesn't require a yearly swap.
Oh forgot to mention that the major power draw on my car is the starter, not my ICE, I crank my engine 20 times without running the alternator for a long time to recharge, sure can feel battery getting weak already. :O But I'm also running a bigger amperage alternator already. Some where in the region of 100amps.