XPost: aus.cars, aus.computers, uk.rec.caravanning   
   From: damian_andrews75@yahoo.com.au   
      
   Thanks mate.   
   The two massive 6V batteries that I mentioned aren't in my hands yet. I have   
   been considering getting them to maintain a good long lasting power source   
   for the van. But, now I think it may be an overkill and a pretty heavy job   
   as well.   
   I think I am better off with a 125Ah sealed deep cycle battery and may be a   
   backup one. I reckon it's better to rely on a small generator rather than   
   carrying massive heavy batteries like I was planning to do.   
   What do you think about that?   
   Thanks   
   "terryc"  wrote in message   
   news:k6t0lv$eft$1@dont-email.me...   
   > On 01/11/12 14:05, Neil wrote:   
   >>  I   
   >> suspect a 300Ah battery would be considerably more expensive than 3 x   
   >> 110Ah batteries together, but you would have to research that   
   >> yourself.   
   >   
   > 125Ah are the largest common Deep discharge wet cells in Aust. Rather than   
   > put tweo in parallel to get larger capacity. I preferred to buy two 6Volt   
   > 225 Amphour batteries. that was to prevent the problem of one failing and   
   > pulling down and maybe destroying the other.   
   >   
   > Another factor is my ability to lift individual batteries in and out of   
   > locations. I remember that the 12V 125AmpHr batteries weighed 35kg each   
   > Can not remember the figure for each 6V 225Amphour battery.   
   >   
   >   
   >   
   >> The differences between battery types are basically this:   
   >> Leisure batteries are designed for prolonged but light current drain,   
   >   
   >> Traction batteries are designed for electric propulsion and other   
   >   
   >> Vehicle starting batteries capable of delivering very high currents   
   >   
   > My rule of thumb is that if the battery is rated in amphours, then it is   
   > designed for "deep discharge" use. If it is rated in CCA, then it is a ICE   
   > starter battery.   
   >   
   >   
   >   
   >> All lead/acid batteries have the potential to emit hydrogen and oxygen   
   >> when they are overcharged.  This is actually beneficial when   
   >> equalising a battery, but requires the ability to be able to replace   
   >> the water lost in so doing.   
   >   
   > This is why cheap battery chargers are a bad idea. They do not limit the   
   > final trickle voltage and can run wet cells dry.   
   >   
   >> I don't have any links for you, I got my battery from a local caravan   
   >> spares dealer.   
   >   
   > I actually go to a battery specialist who originally had traction as well   
   > as alarm batteries but a seems to have moved more to alarm and specilist   
   > motor starters(changing market in the area). Look in yellow pages, etc for   
   > battery supliers in industrial areas and avoid main street battery shops.   
   >   
      
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