Please watch this video so you don't make the same costly mistakes in building your DIY solar panel system as I did. Hopefully this information will save you time, money and a whole lot of frustration. IMPORTANT LINKS: - Grape Solar 280-Watt Polycrystalline Solar Panel: www.amazon.com/gp/product/B00635XSEG/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B00635XSEG&linkCode=as2&tag=yt0c-20 - MPPT Charge Controllers: www.amazon.com/mn/search/?_encoding=UTF8&camp=1789&creative=390957&field-keywords=mppt%20charge%20controller%2030a&linkCode=ur2&rh=i%3Aaps%2Ck%3Amppt%20charge%20controller%2030a&sprefix=mppt%20charge%20controller%2Caps%2C164&tag=yt0c-20&url=search-alias%3Daps - Grape Solar 250-Watt Monocrystalline Solar Panel: www.homedepot.com/h_d1/N-5yc1v/R-203079647/h_d2/ProductDisplay?catalogId=10053&langId=-1&keyword=solar+panel&storeId=10051#.UB6DpaPNle- - Sunforce 30-Amp Digital Charge Controller: www.homedepot.com/Tools-Hardware-Auto-Maintainers/h_d1/N-5yc1vZ1xh7Zbu7x/R-100658291/h_d2/ProductDisplay?catalogId=10053&langId=-1&storeId=10051#.UB6D26PNle9 - BackwoodsSolar.com