House/solar battery opinions
My current battery space is 20"L x 14"w x 10"H Going solar, and want to packs as much AH in there as I can (reasonably). Currently looking at 250 - 300. Price is not THE deciding factor, unless ...
Forum Discussion
seraphim wrote:
Still working on that calculator. Doesn't like the AM solar panels. Get an insufficient voltage in the array, unless I use an Mppt, then I seem to need a minimum of 7 panels lol
1) There can be no "insufficient voltage" with multiple panels of 12V nominal and 12V bank, if wires are adequate. But you do need MPPT for 12V in series.
2) There is no minimum panels number or minimum panels wattage with MPPT. The only "minimum" parameter for MPPT is the voltage - Vmp should not be lower than the bank nominal votalge, 12V in your case. 4*100W in series will provide around 22 Vmp, enough for MPPT.
