PV LOGIC 8W Fold Up Solar Battery MaintainerPV LOGIC 8W Fold Up Solar Battery Maintainer This panel is ideal for ensuring your 12v battery remains charged and does not go flat over time perfect for cars, vans, motorhomes, caravans, boats and other vehicles. It connects directly to a battery without the need for a charge controller (unless the battery is smaller than 60A). The 8watt solar battery maintainer consists of twin crystalline solar panels that fold into a tiny 230 x 198 x 15mm package