Join Date: Mar 2006
Location: Fort Lauderdale
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Re: BP Solar Panels 215W for $300.00....what's the catch?
The catch on these (and many newer) panels is that they're probably very high voltage panels...upwards of 30 volts for peak power output where they'll generate 8 amps. If you have a 12v system for house bank (like most people), this means 15 or so amps at charging voltage for your batter. Which means you need a pretty beefy MPPT charge controller to handle stepping down the voltage to your batteries.
So, what you save on a cheaper panel gets easily spent on a stronger, bigger, heavier, more complicated charge controller. Thats why so many people love those Kyocera 12 panels. More pricey up front, but let you use a cheaper charge controller.
Last edited by night0wl; 07-23-2012 at 05:30 AM.