TrevandJenny
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Will a pair of 120Ah AGM batteries be sufficiently charged by a 120 watt solar panel whilst off grid??
As it appears my 2 x 100Ah Platinum AGM batteries have died, I find I can buy 2 x 120Ah for around the same price as the 100s,.general rule of thumb is 1W of solar for 1Ah of Battery.
Other aspect is how much you can expect to get from a panel - a 120W panel in the UK will bring in a lot less than a 120W panel in Greece, for example, so WHEN and WHERE you are makes a big difference.
Long story short ... If you actually need a pair of 120Ah batteries, a single 120W panel is very likely not enough.
It won't cause a problem, it just is not the optimum. No reason to not get better/bigger batteries if you have the chance.As it appears my 2 x 100Ah Platinum AGM batteries have died, I find I can buy 2 x 120Ah for around the same price as the 100s,.
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I thought maybe the panel could cope, hence with 40Ah excess over the 100s when fully charged could reduce reduction in overall battery power available.
It all depends on how much power you use each day.Will a pair of 120Ah AGM batteries be sufficiently charged by a 120 watt solar panel whilst off grid??
Well, when it comes to solar, if you are going to put one panel on the roof, you may as well fit two - or three - or whatever sensibily fits whilst you are at it, as better to much than to little, as mr windy saysI would rather have to much than to little.You can't take it with you David lolol
Sign at the side of our Church Collection Plate:I would rather have to much than to little.You can't take it with you David lolol