Grape Solar GS-PWM-165W PWM Solar Charge Controller， 165-watt<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Digital display shows charging current， discharge current and battery bank capacity</li><li>Allows for parallel connections of smaller panels， ideally suited for grape solar panels 160 watt and less</li><li>Dual USB ports for directly charging portable devices， 3 stage charging method: bulk， absorption and floating</li><li>Pwm technology works on only low voltage panels</li><li>See manual for more details on PWM charge controller</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51wf3TvNJNL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51LQ-GWea3L.jpg" noproxy>