20W Monocrystalline Solar Panel with 30A Controller Key benefits Durable construction: low iron toughened glass and an aluminum frame resist wear and weathering for long service life. Reliable battery protection: included charge controller prevents overcharge, overdischarge, overvoltage, short circuit, and reverse current to extend battery life. Intelligent charging: automatically charges in daylight and shuts down at night to avoid unnecessary battery drain and reduce standby power use. conversion efficiency: monocrystalline silicon cells deliver strong power output in full sun while occupying minimal space. Ready to connect: dual USB 5V outputs and a DC5521 female port with an integrated voltage regulator make powering and charging devices simple. Key specifications Size: 30A (controller rating) Solar panel power: 20W Solar panel operating voltage: 18V Open circuit voltage: 21.6V Short circuit current: 1.11A maximum Controller system voltage: 12V and 24V adaptive Output ports: dual USB (5V) and DC5521 female Material: monocrystalline silicon cells, low iron toughened glass, aluminum frame Protection level: IP65 Solar panel size: approx. 330 x 360 x 3 mm Product features: integrated voltage regulator module, 5V dual USB regulator output What it solves Keeps batteries maintained and ready without constant mains charging by providing continuous solar trickle charge. Prevents common battery failures with multi mode protection in the controller, reducing the need for frequent battery replacement. Enables off grid charging and device power in locations with limited space thanks to compact, efficient panel design. Compatibility and applications Compatible with 12V and 24V lead acid and deep cycle battery systems. Typical uses: maintaining motorcycle or lawn mower batteries in a garage, charging a boat battery while docked, and keeping an RV or trailer house battery topped up. Also suitable for gate openers, electric fences, chicken coop lighting, shed power, and remote outdoor lights. Package contents 1 x Solar panel 1 x Controller 1 x Clip line 1 x Car charging cable 4 x sucker 2 x buckle 1 x User manual Installation notes Mount the panel with the glass facing direct sunlight for performance. Use the included accessories to secure the panel and connect the controller to the battery following the user manual. The controller automatically adapts to 12V or 24V systems and provides regulated 5V dual USB output for direct device charging. This product combines a compact 20W monocrystalline panel with a 30A rated controller for reliable, intelligent battery charging and simple device powering in a wide range of outdoor and mobile applications.