Renogy 10A MC4 Fuse Holder w/Fuse. The seller is renogysolar-uk and is located in this country GB. Eight Long Cap Bolts and Four Short Bolts. Optimum Operating Voltage (Vmp) 18.9V. Renogy 300w 12v/24v mono premium solar panel kit with 40a mppt charge controller this item is in the category home, furniture & diy\diy materials\electrical supplies\alternative energy supplies\solar power supplies\solar panels & kits.