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HS...Thanks for some great reporting and all your testing efforts. First I would note your reported 63 watts of output at peak (note how this contrasts with the claim of OVER 100 watts by Brian due to "special BP panels").
I am having trouble following your math.
That would be...about 250 Watt-hours up here, indicating 375Wh down there in sunnier climes. Or about 73 Amphours at 13.6V here, and closer to 100AH down there.
How do you make that calculation...watt hours/Volts=amp hours NO?
375 watt hours at 13.6V would generate...27 amp hours or so.
Am I wrong on this calculation or misinterperting what you've said.
If I am right and the panels when adjusted reasonably frequently could put out the 63 Watts you found for the equivilent of 10 hours a day...or 630 watt hours at 13.6 volts...that would be 46 amp hours.
Are you measuring watt/amps/volts off the panels or only at the "end" of the system. I am a bit confused in that you found the output of the panels even lower that our prior estimates but came up with higher amp hours for your estimates. We know power cannot be boosted...merely converted so how does 63 watts peak translate into that kind of amp hours. Even at just 13 volts it is only 48 amp hours???
Actually 48 amp hours on 100 watt panels is nearly 100 % bettr than one might expect from fixed panels and a standard controller...so the positioning of the panels and the MPPT controller DO make a big difference even if my calcs are right...but the argument here has always been about the CLAIMED output and the unlikely scenario of a cruisers remaining on board to adjust panels as the boat swings in the wind and tide negating much of the positioning advantage.
Your further input on why my amphour calcs are so different than your estimates is eagerly awaited.
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