dwh
Tail-End Charlie
I was looking into that Victron controller, but according to their website, I need the 30-amp model. Is this the case? I'm having a bit of trouble figuring out exactly how much MPPT I need for my panel. (specs below)
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I use a 100|30 for my 305w panel. The first number (100) is the max input voltage. Mine has a Vmp of 36v, yours is 55v. No worries there. The second number (30) is max amps out to the battery. 305w ÷ 12v (battery at 50%) = 25a.
As John says, you could save a few bucks and get by with a 75|15, since you'll rately, if ever, see full output from the panel to the battery (mostly due to the battery). But I've got 400ah worth of battery to suck up power, so I figured I'd go with the 100|30 just to make sure I'd get all the solar can produce.