Description Specification: Product size 1180*540*3.3mm Power 100W Working voltage 18.1V±0.3V Working voltage 16.1A±0.5A Temperature coefficient Voltage (0.065±0.015)%/℃ Temperature coefficient current -(160±10)mA/℃ Temperature coefficient power -(0.5±0.05)%/℃ System voltage 1000V Operating environment temperature -40°C- 85°C (-40°F to 185°F) Wind resistance 50psf (2400 pascals) Snow resistance 113psf (5400 pascals) Hail impact 25mm (1 inch) at 23 m/s (52mph) Warm Tips: 1.Please make sure the positive and negative terminals of this product areconnected with the charged product’s positive and negative terminals before usage.2.Please do not try to modify the PCB circuit unless you are a professionaltechnician.And we are not responsible for such a result.3.The best working time: 9:00-17:00 (mainly for sunlight weather).which is intended to extend the battery life and emergency charge usage.Pleasechoose other higher current products if you want a faster charging speed. Package included: 1 x 100W Solar Panel 1 x Controller (10-30A) Note: 1.Please don’t scratch the surface of the solar panel with a sharps object.2.Please make the solar panel exposed to direct sunlightto ensure the best charging speed while it is charging.3.Please don’t place the charger in the rainny day,or it will lead to a short circuit.4.The 18V 300W solar panel charger is built with an Anti-flow resistense preventerinsdie,it will not occur the backflow phenomenon.