pirlbeck wrote:
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My main reason for wanting a MPPT controller was to be able to parallel at least 2 of the panels so I don't have excessive voltage drop in the factory 12ga wiring.
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You intend to increase the array voltage by putting two panels in series and then paralleling the two strings of two.
IIRC the Bogart has a max V of 55V, and if the panel's Voc increases by 0.35V per C drop in temperature, you could exceed the Bogart's limit with two panels in series up in Alaska.
50-60V max is pretty typical for PWM. But most mppts can handle 100V input.
And I agree, the second panel is prolly the closest. When I looked for a matching parallel panel for my rig, I ensured it had the same number and type of cells (poly vs mono) and that the Vmp @25C was as close as possible.
A google search using "Vmp 16.7 Solar" reveals a couple of exact matches. Maybe not as cheap as what you're looking at though.
