Renogy 300 Watt 12 Volt Monocrystalline Solar Bundle Kit 3 pcs Renogy 100 Watt monocrystalline grade A high efficiency solar panels, excellent performance in low-light environments EL tested solar modules; no hot-spot heating guaranteed, Pre-drilled holes on the back of the panel allow for fast and secure mounting Corrosion-resistant aluminum frame for extended outdoor use, allowing the panels to last for decades Sealed, Gel and Flooded charging algorithim ready, 4-Stage battery charging process for a rapid, efficient, and safe battery charging The Renogy Wanderer is equipped with multiple electronic protections; overcharging, overload, short-circuit and reversed polarity