Pete-B Posted July 11, 2012 Share Posted July 11, 2012 Assuming you have a 100amp hr battery which is flat, how long would it take a 100w solar panel to fully charge it in sunny conditions? Link to comment Share on other sites More sharing options...
Guest Tracker Posted July 11, 2012 Share Posted July 11, 2012 Probably about 2 or 3 days - depending on several variables. Link to comment Share on other sites More sharing options...
colin Posted July 11, 2012 Share Posted July 11, 2012 How flat is flat? 50 or 60 ah down? In thoery with tracking and good day then one day, but in practice richards answer is more realistic. Is there more to rhe question than you've posted? Link to comment Share on other sites More sharing options...
Pete-B Posted July 11, 2012 Author Share Posted July 11, 2012 No not really, just wondering and trying to assess how a 100 watt solar panel would cope with two 90 amp linked leisure batteries and the engine battery whilst the vans in winter storage. There's also a battery master switch fitted to cope with power transfer between the batteries. Link to comment Share on other sites More sharing options...
colin Posted July 11, 2012 Share Posted July 11, 2012 In winter storage a 100watt panel will have no problem keeping them topped up. On last van a 30watt easily coped outside, on present van a 85watt panel just copes even thou has roof couple of feet above. Link to comment Share on other sites More sharing options...
BrianBW Posted July 14, 2012 Share Posted July 14, 2012 When my leisure battery went flat with me last year. It never recovered, I could never get a charge into it after that! Link to comment Share on other sites More sharing options...
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