ECO-WORTHY this 195W 12V Monocrystalline Solar Panel is primarily used on off-grid situations that include RV, boat, sailboat, yacht, truck, cabin, camper, tent, trailer, golf cart. 1000WH per day, can fully charge a 50AH Battery from 50% in 1.5 hours (depending on the availability of sunlight). Corrosion-resistant aluminum frame for extended outdoor use, allowing the panels to last for decades. Anti-reflective, high transparency, low iron-tempered glass with enhanced stiffness and impact resistance. IP67 rated junction box provides complete protection against environmental particles and low pressure water jets. Pre-drilled holes on the back of the panel allow for fast mounting and securing. Pre-drilled holes included for grounding. Ideal with large rail mounts for extra support and security.