Renogy 800 Watt 12 Volt Solar Premium Kit Monocrystalline panels come with high-efficiency SunPower cells that help increase module efficiency.This module efficiency is 18.35% which is higher than regular 100W Monocrystalline: 15.47% and 100W Polycrystalline: 14.56%. Bypass diodes minimize power drop caused by shade and ensure excellent performance in low-light environments. Extra thick anti-reflective, high transparency, low iron-tempered glass with enhanced stiffness and impact resistance. Comes equipped with an MC4 Inline fuse and ANL fuse components for protection on your charge controller and battery. Included MT-50 Tracer Meter allows you to keep an eye on your system.