Sealey solar power panel 12v 4 8w sealey spp03 amorphous solar panels convert daylight directly into 12v electricity suitable for maintaining charge in a wide range of batteries and power packs ideal for batteries stored in boats and caravans and for batteries in vehicles in long term storage advanced technology solar panels require only daylight to generate power supplied with battery clips and cigarette lighter plug sealey spp03 solar power panel 12v 4 8w