The PV Logic 8W fold up solar battery maintainer is ideal to ensure your 12v battery remains charged and does not go flat over time – perfect for cars, vans motorhomes, caravans, boats and other vehicles. It connects to a battery through the 12v connection or direct to the battery via crocodile clips. Technical information Solar panel – 8W Max Current (Imp) - 0.44A Max Voltage (VMP) - 18v Approximate watt-hours per day - 52w Appropriate amp-hours per day - 4.29A Cable length between panel and final connection – 3m Dimensions - Closed 230x198x15mm, Open 470x198.7.5mm Weight – 600g