acceptance charging rate AGM batteries
Hi all, It is generally thought that acceptance rate for a flooded deep cycle battery is about 12.5 amps per 100 amp-hours of capacity once the bank is at 85% state of charge. I know that accept...
Forum Discussion
Hi Mr Wizard,
For everything except air conditioner use, 12 volt solar is quite adequate. Once you look at the wattage needed for roof air, it becomes clear that 48 is a winner, and 24 is barely viable.
Yes, I could replace the existing panels--but I'm limited by the Blue Sky 3024 di. In MPPT mode it doesn't "do" 30 amps.
What solar I do have appears to "out perform", and works in both leafy shade and rain.
I could stick with 12 volts and not replace the Magnum inverter charger, but unshaded space on the roof would not allow me to do much more wattage than I currently have. So I'd still be having an aluminum frame work added. I suspect that would cost as much as the new solar system--and goodness knows if it would be wise.
My cousin is a talented man, and has the equipment to weld aluminum, but, he is a perfectionist and will not do so.
If I intended to full time for another ten years--I'd be close to break even on costs. But more likely I'll go back to part time in 2019 or 2020.
My RV is only 2 inches under the legal limit for width, so hanging panels off the sides is not viable either.
Much as I hate the generator, I have it, and it is paid for. So I fear my choices, for hot days, are to be a "power pole princess" or a "gas guzzler generator head".
Today I'm a member of the PPP as the ambient temperatures is 89 f (31.6 c).
It is fun to dream.
For everything except air conditioner use, 12 volt solar is quite adequate. Once you look at the wattage needed for roof air, it becomes clear that 48 is a winner, and 24 is barely viable.
Yes, I could replace the existing panels--but I'm limited by the Blue Sky 3024 di. In MPPT mode it doesn't "do" 30 amps.
What solar I do have appears to "out perform", and works in both leafy shade and rain.
I could stick with 12 volts and not replace the Magnum inverter charger, but unshaded space on the roof would not allow me to do much more wattage than I currently have. So I'd still be having an aluminum frame work added. I suspect that would cost as much as the new solar system--and goodness knows if it would be wise.
My cousin is a talented man, and has the equipment to weld aluminum, but, he is a perfectionist and will not do so.
If I intended to full time for another ten years--I'd be close to break even on costs. But more likely I'll go back to part time in 2019 or 2020.
My RV is only 2 inches under the legal limit for width, so hanging panels off the sides is not viable either.
Much as I hate the generator, I have it, and it is paid for. So I fear my choices, for hot days, are to be a "power pole princess" or a "gas guzzler generator head".
Today I'm a member of the PPP as the ambient temperatures is 89 f (31.6 c).
It is fun to dream.
MrWizard wrote:
Don
You could replace the unisolar panels with one of higher wattage
And parallel another controller if needed
I'm sure some body would but those unisolars from you
I already replaced two of mine last summer 2015,
And I'm considering replacing the rest of them
While 24v or 48v is in some ways appealing
I don't find it necessary in an RV
