Solar crunch time! Please review my plan.
I would like begin my first post with a big thank you to all who have shared their knowledge and experience on this forum. Without that, I probably wouldn't be entering the solar jungle! I hope yo...
Forum Discussion
Hi BFL13,
No I'm not saying that at all. A small bank needs more wattage because there is a much greater chance that it will dip below 50% state of charge.
What I have consistently said is that as battery bank capacity rises the solar wattage per 100 amp-hours can be lower and may approach but not be below 60 watts per 100 amp-hours.
I have also consistently said that 150 watts per 100 amp-hours is a reasonable maximum wattage, because above 85% state of charge that is as much as the jars will accept.
Charging is not linear. Neither is discharging.
If an inverter is going to be used or the user is a full time RV'er, then they may benefit from maxing out all available unshaded space, and they should ignore the 150 watt suggestion. They should NOT ignore the 60 watts per 100, unless they use bank switching (I do use it).
No I'm not saying that at all. A small bank needs more wattage because there is a much greater chance that it will dip below 50% state of charge.
What I have consistently said is that as battery bank capacity rises the solar wattage per 100 amp-hours can be lower and may approach but not be below 60 watts per 100 amp-hours.
I have also consistently said that 150 watts per 100 amp-hours is a reasonable maximum wattage, because above 85% state of charge that is as much as the jars will accept.
Charging is not linear. Neither is discharging.
If an inverter is going to be used or the user is a full time RV'er, then they may benefit from maxing out all available unshaded space, and they should ignore the 150 watt suggestion. They should NOT ignore the 60 watts per 100, unless they use bank switching (I do use it).
BFL13 wrote:
So now you are saying the four batts will need more amps (and so a higher wattage array) than the two batts to cover the "higher" losses to do the same AH in the same time. This is a 180 in your story!
