Sunsei SE 500 Solar Trickle Charger Perfect for maintaining dual batteries in Boats. Built-in blocking diode protects against natural discharge and electronic drain Weather resistant and beautifully designed Provides 7.75 Watts at a maximum current of 0.5 Amps 80% of the rated output for a period of ten years Reduce your carbon footprint - Replaces 22 lbs of CO2 emissions per year Touch-action LED indicator - Lets you know your panel is charging Plug'n'play connectors require no tools, save time and ensure reliable connections Multiple panels can easily be connected together Charge controller is recommended to maintain gel and AGM battery types and necessary for a single deep cycle marine battery Can remain connected to the batteries at all times Power: 0.5 Amps, 15.5 Volts (7.75 Watts) Dimensions: 19.05 inches x 10.2 inches x 1.09 inches 48.4 cm x 25.9 cm x 2.77 cm Weight: 3.3 lbs / 1.5 kg PACKAGE CONTENTS 1 x SE 500 solar panel 1 x Extension power cable (10 ft.) 1 x Panel-to-panel jumper cable (1 ft.) 1 x O-ring connector wire (1.5 ft.) 1 x Male DC power port adapter wire (1.5 ft.) 1 x Female DC power port socket (1.5 ft.) 1 x Battery clamp wire (1.5 ft.) 2 x Wire twist connectors 4 x Stainless mounting screws Instruction manual