I am sure the standard answer will be 'as big as possible' but...... I have looked on the Elecsol website and they show the following batteries, cost and weight. It can see the real value in going from 70 a/h to 100 a/h as the larger is 42% more capacity but with additional weight of 18%. However, going from 100 a/h to 110 a/h is a 10% increase in capacity but a 29% increase in weight. Does the extra 10 a/h of the 110 a/h over the 100 a/h make so much difference in use or am I missing something? 70 a/h - £95, 16.5 KG 100a/h - £112, 19.5 KG 110 a/h - £120, 25.2 KG
it all depends on how often you'll camp "off the grid" i run a 90 ah leisure and it's never been a problem for a long weekend.
just as a guide what do you run off yours ? gota shoot out be back later when youve all had your say , just so you dont think im ignoring you ;D. old fart has grandsons birthday prezzy to deliver and play with ???
Yep, thanks Barney. Height and width the same for 100 and 110, just the length that differs. The only things I run are the stereo (a standard 50 w per channel output thingy,no fancy amps or sub base do dahs though), phone charger, interior light, 12v fan occasionally and sometimes an awning light. That does not seem much really does it? It's just that I found my old 70 a/h (which I no longer have) was sometimes not up to the job over a couple of nights away.
You can get them cheaper: Here's the first I found: http://www.griffinbatterycentres.co.uk/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=33&category_id=5&option=com_virtuemart&Itemid=25&vmcchk=1&Itemid=25
One thing to consider is that even leisure batteries will not have a long life time if you flatten them too much, its better to get a larger battery so when you use it off grid you dont completely discharge it so it's capacity wont deplete too quickly. Those weight figures are a bit surprising, I am guessing that most of the weight is in the plates, leisure batteries have thicker plates so they withstand discharges repeatably with less ill effects than starter batteries. Maybe the 110ah one is disproportionatly heavier than the 100ah one because it has thicker plates and therefore better quality ?
