Forum Discussion
BFL13
Feb 09, 2015Explorer II
The much-vaunted shoulder hours superiority of MPPT for adding to daily AH haul is often raised as a selling point.
My answer is that if shoulder hours with PWM is 2 amps and with MPPT it is 4 amps (!00% gain! Wow! ) that is 2 more amps for however long.
If it is for 8 hours, that is an extra 16AH. Gosh! :)
Besides, I have never seen this where and when we camp using solar. Even if it happened, that would be just another cloudy day that the solar could not "keep up" (Who cares by how much it can't keep up? I don't mind running the gen every so often) and after the batts get down to 50%, out comes the generator and the 100 amp charger. 16AH is ten minutes of gen time before amps taper.
So people will ask if 2 amps is peanuts , then why do you care if you get 16 amps from the panel insteasd of 14? Because! That's why. :)
My answer is that if shoulder hours with PWM is 2 amps and with MPPT it is 4 amps (!00% gain! Wow! ) that is 2 more amps for however long.
If it is for 8 hours, that is an extra 16AH. Gosh! :)
Besides, I have never seen this where and when we camp using solar. Even if it happened, that would be just another cloudy day that the solar could not "keep up" (Who cares by how much it can't keep up? I don't mind running the gen every so often) and after the batts get down to 50%, out comes the generator and the 100 amp charger. 16AH is ten minutes of gen time before amps taper.
So people will ask if 2 amps is peanuts , then why do you care if you get 16 amps from the panel insteasd of 14? Because! That's why. :)
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