Constructed of high-quality laminated monocrystalline solar cells that efficiently generate solar energy for high-capacity battery storage devices. The 7-AMP charge controller (mounted on back of collector) provides overvoltage/overload protection to units being charged. Use the Sierra Wave® Model 9580 80-Watt Solar Collector to charge the available Solar Link-240® Power Center or directly charge 12V lead-acid vehicle batteries and other similar devices.