Item Type: Solar Panel KitMaterial: Monocrystalline Silicon + PET Laminate + Plastic Controller Shell Product Size: Solar Panel: Approx. 36 x 33cm / 14.2 x 13.0in, Controller: Approx. 13.3 x 7 x 3.2cm / 5.2 x 2.8 x 1.3inSolar Panel Chip: Monocrystalline Silicon Cell Solar Panel Power: 25W Solar Panel Open Circuit Voltage: 5.5v Solar Panel Working Voltage: 5v Solar Panel Short Circuit Current: 0.5A Solar Panel Working Current/Voltage: USB: 1.8A 5V / DC: 1.38A 18V Solar Panel Output Interface: Dual USB Plus DC Interface Controller Voltage: 12v / 24v Automatic Identification Controller Current: 20A Maximum Pv Voltage: 12v Battery, Up to 23v, 24v Battery, Up to 46v (up to 50v Without Load) Controller Maximum Photovoltaic Input Power: 300w (12v), 600w (24v) Controller Standby Current: Notes on solar panels:1. When charging, please make sure the surfaces of the solar panel faces the sun2. Avoid contact with impact objects and other incisive objects3. Do not bend the solar panel too much, so as not to break4. Keep the panel surfaces clean when charging to maintain high efficiency of solar power generationController Notes:1. The controller is 12V/24V automatic identification, when installing for the first time, please make sure that the battery has enough voltage so that the controller can identify the correct battery type. In order to protect the life of the battery, once the battery voltage is lower than 8V, the solar controller will automatically shut down2. Install the controller as close to the battery as possible to avoid voltage drop caused by too long wires and affect the normal voltage judgment3. This controller is only suitable for various leadacid batteries (including openings, seals, gels, etc.), please do not use other batteries (including lithium batteries, nickelhydrogen batteries, etc.)4. The controller can only use photovoltaic panels as the charging source, please do not use DC or other power sources as the charging source5. The controller will heat up when it is running. The operating temperature of the controller is 35C to +60C. Please install the controller on a flat and wellventilated surfaces.6. The LCD display of this controller has an error of 0.2V0.3V, but this is normal7. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. 1Characteristics: Monocrystalline silicon solar panel, PET bottom layer, no glass, durable, light weight, easy to install and use, high conversion rate, intelligent circuit, dual USB+DC output interface. 2LCD Display: LCD display, adjustable charging and discharging parameters, with power off memory function, can clearly display status and data, and can easily switch modes and parameter configuration. 3Multiple Protection Functions: Built in overcurrent protection, short circuit protection, open circuit protection, and reverse connection protection are all self recovery types, which do not damage the controller. 4Cooling Fan: The cooling fan is powered by the solar panel, easy to install, just connect the interface of the solar panel and the fan, and then put it in the sun to use. 5Uses: Can be used as an emergency power supply to charge devices such as mobile phones, power banks, laptops, tablets, cameras, etc.