The 2004 battery I originally put in the Atlantic has long gone to God, so what type of battery is considered the bees knees these days? And what is the best way to extend a battery's life when the van doesn't go out much?
The battery won't need to power anything fancy - principally it will run one or two high-efficiency light globes when we are somewhere without power.
I bought a gsm deep cycle battery. I was advised not to buy cheap Chinese one so bought a Century brand. A year later and so far all's good. Mine is only a 64 amp hour as I only have light and occasionally the fridge.
Thanks for the pointer Roehm. Starting with your advice, I did a bit of homework and contacted the Rainbow Power company. I've bought stuff from them before and have been really happy with their products and advice.
I'm now leaning towards getting a smaller lithium battery rather than a larger gsm battery: - advantages among other things are these batteries are a fraction of the weight of traditional batteries and you can drain them almost empty, whereas a gsm battery lasts longest if you only drain it 20% and then re-charge. RPC also felt that this sort of battery would deal better with periods of inactivity. - a disadvantage is that they cannot be re-charged from the car's alternator.I will need to use a trickle charger connected to mains power or a solar panel with a controller
The guy I spoke to was going to do some more research, but h had been advised that the voltage from the alternator exceeds what the battery could take. He will talk some more with a colleague and we'll talk more about it on Monday.
The Rainbow Power Company is a very well known and respected alternate energy reseller. (Not bad for a couple of hippies) But, lithium or LifPo4 is a whole new world that many in this industry are not conversant in yet. By all means, purchase from them but don't expect their knowledge in lithium to be right up to scratch in all areas. You've already had alternate information provided re DC/DC charging. There's much more to back that up once you get out there and look.
Thanks so much for all of that. As with much of waht we do, getting 2020 technology to fit with 1950s technology is always going to need a bit of thinking outside the box. That give me a lot of info to go on with.