About this item Widely applied to off grid 12 Volt battery charging system and a variety of DC applications, designed for maintaining 12 volts batteries including caravan, RV, car, boat, green house, marine, dry camping, garden watering, shed, cabin, gate opener or remote power use. High efficiency monocrystalline solar cells, heavy duty anodized aluminum frame, advanced encapsulation material with multi-layered sheet laminations enhanced cell performance and provide a long service life. Easy to install with pre-drilled holes on the back of panels for fast mounting and securing. Small in size and light to take, it is easy to carry for camping or other outdoor activities as well. With the 10A 12V/24V PWM LCD Solar Charger Controller, it can prevent the battery from over charging, over voltage, discharge and short circuit, and reversed polarity protection, the battery is fully protected. The Controller also has two USB output - Voltage 5V/2.5A. Package included 30 watts solar panel (Dimensions: 23.6 x 13.5 x 1 inch, Weight: 6.4bs), 12V/24V solar charger regulator controller and the cable with Alligator Clips for battery charging connection, easy to fix and install.