12V300W DC Immersion Water Heater element, 1 inch bsp fitting, 200mm approx length, can be powered using solar panels of similiar output or a12v battery or could even be used as a dump load for a small wind turbine,non corrosive stainless steel construction,this DC water heater immersion element can be used to heat water,oil and other liquids and can be fitted to a standard hot water cylinder using a 1 inch essex flange ,this is a twin u type element and each element will output 150 watts and can be used independently if you wish by removing the link between the two elements,price includes UK delivery