Wild River by CLC Custom Leathercraft SP01 Solar Panel Charger by CLC Custom Leathercraft For Nomad XP Backpack 6Volt/3 watt volt Monocrystalline solar panel Clip mounting feature for seamless integration to Nomad XP Backpack, sold separately Elastic loops for cable management Web tabs for additional mounting options 12 to 15 hours of sunlight to charge your XP power supply, depending on daylight/geographic conditions