Roll Up Solar Panels / Ogre MPPT Controller

BFL13 wrote:
120w will get you about 6.3a at STC.

I'm not sure about that. It looks like they're spec'ing the total package output capability due to - at least partially - the MPPT controller's higher average energy capture (notice the 30% figure they talk about), which is an unusual controller for a portable panel set. But you do have to pay for it. The main problem with their two offerings is the same one all turn-key portable solar setups seem to have - a controller mounted on the the panels instead of back close to the batteries for less overall voltage degradation.

I'm thinking about building my own portable setup so as to wind up with an MPPT controller for highest overall output day after day. Maybe one of those compact Rogue MPT-2024 MPPT controllers mounted back inside the RV right near the batteries. I'd install a handy weatherproof outlet on the RV wall for plugging in at least 50 feet of 12 ga flexible two-conductor wire coming directly from a couple of portable 60W panels wired in series so they'd be feeding the controller's input with max potentials of 34 volts on-up for good energy transfer. I can't decide on poly or mono yet - more study needed.

I think I could put the above setup together for less than the Roc-Solid turn-key portables ... maybe even bettering their performance slightly due to my controller being back at the batteries. Besides, if someone was to walk off with the panels ... why give them a pricey controller, too.