Specifications: Type: Solar Panel+Controller. Material: Polysilicon. Solar Panel Power: 25W（rated). Controller Display: LCD Screen. Working Voltage: 12V. Current: 0-800MA. Temperature: - 40 degrees~60 degrees. Size: Solar Panel: Solar Controller: 13.3x7x3.2cm. Feature: -Solar Panel Made of Polysilicon, it has a 18~21% high conversion rate. -Solar Controller Build-in short-circuit protection, open-circuit protection, reverse protection, over-load protection. -Fully 3-stage PWM charge management.Big LCD display, all adjustable parameter. -Environment-friendly and pollution-free, it realizes the energy conversion from solar power to electric power. -A solar panel is a device that converts solar radiation directly or indirectly into electrical energy by absorbing sunlight. Compared with ordinary batteries and rechargeable batteries, solar panels are more energy-saving and environmentally friendly. -Great for outdoor cycling, climbing, hiking, camping, traveling.Wide range of applications. SYSTEM CONNECTION: 1. Connect the battery to the charge regulator-plus and minus. 2. Connect the photovoltaic module to the regulator-plus and minus. 3. Connect the consumer to the regulator-plus and minus. NOTE: The reverse order applies when deinstalling, an improper sequeence order can damage the controller. SAFETY INSTRUCTIONS: 1. Make sure your battery has enough voltage for the controller to recognize the battery type before first installation. 2. The battery cable should be as short as possible to minimize loss. 3. The regulator is only suitable for lead acid batteries: OPEN,AGM,GEL, it is not suited for nickel metal hydride, lithium ions or other batteries. 4. The charge regulator is only suitable for regulating solar modules. Never connect another charging source to the charge regulator. Package included: 1 x Solar Panel. 1 x Battery Clip. 1 x Cigarettee lighter. 1 x USB Vehicle Charger. 1 x Solar Controller. 1 x DC to DC Cable. Note: 1. Please allow 0.5-1 inch difference due to manual measurement. (1inch=2.54cm) 2. The color of the actual items may slightly different from the listing images due to different computer screen, thanks for your understanding.