Four 175 Watt panels, OB MX60, 232 Amp hrs, OB 3524, Honda eu2000.
Ohm's Law: Amps = Volts / Ohms
Power Formula: Watts = Volts * Amps
so I just checked the difference between the 2 panels...
VOC: 78 volts
VMAX: 61 volts
VOC: 61 volts
VMAX: 47 volts
definitely greater than 10% difference.... and then I think I was planning on stringing together a bunch of thin film metal cells... I have like 40 units of flexible 3.5v sheet that I would probably make into panel 3 which maybe could average between panel 1 and 2???
If it is "cheap"--Why not try it... You saw a 2x different in panels could result in a 25% reduction in output (again, don't know which peak the controller will pick).
20x BP 4175B panels (replacement) + Xantrex GT 3.3 inverter for 3kW Grid Tied system + Honda eu2000i Inverter/Generator for emergency backup.
If there is an overlap, with Vmp of the higher voltage panel below Voc of the second panel, ,the CC should see only one peak, somewhere above the Vmp of the second panel.
On the other hand, if the CC tries to sample the voltage current profile over a wider range before zeroing in, it still may find the true maximum even with the first situation.
Sunny Boy 3000US, 18 x BP Solar 175b panels, installed 2009.
I never spend money on anything... no tv, cellphone, I do my own haircuts, I don't buy pretty much anything but tools. so I have the funds to throw away on something like this, but as is everything else, it's always hard to justify haha
I just reread this thread. Cariboocoot nailed it in the first response (post #2). For less than you spend trying to make your panels work, you could buy a properly matched panel and controller and generate more power. --vtMaps
4 x 235w Samsung, Outback fm60 & vfx3524 & mate, Midnite E-panel, four Interstate L16, Trimetric monitor, Honda eu2000