20W-300W Flexible Solar Panel 12V Charger Dual USB With 10-100A Controller Solar Cells Power Charge for Phone Car Yacht RV

Installation instructions:If you have purchased a controller, please note that the controller must be connected to a battery before it can function. If the controller is not connected to a battery, it will not be able to function Product parameters Maximum power (pmax): 25W Open circuit voltage (voc): 20V Maximum power voltage (vmpp): 18V Short circuit current (isc): 1A Maximum power current (impp): 0.75A Output: MC4 18V Standard test conditions AM=1.5 Irradiance=1000W/㎡ Temperature=25 ℃ Packing included: 1 * Solar Panel 1 * set of accessories WARNING :Please refer to the manual to properly install the device. This manual provides detailed instructions on the connection details between solar panels and controllers. The controller must be connected to a battery in order to function properly. Solar panels need to be exposed to sunlight in order to be effective. Please do not place the panel under the windowsill or glass, as this will affect the power generation effect.