Experience reliable and eco-friendly power on the go with this DIY Solar Power Bank Kit featuring a large 20000mAh capacity. Designed for outdoor enthusiasts and DIY hobbyists, this solar power bank kit allows you to assemble a portable charging solution capable of fast solar charging and dual-device output. Its built-in single crystal solar panel ensures efficient solar-to-electric energy conversion, making it perfect for sports, travel, and other outdoor activities. Key Features: · **20000mAh Large Capacity**: Provides ample power to charge your smartphones and other devices multiple times, ensuring you stay connected wherever you are. · **Solar Fast Charging Support**: Equipped with a high-efficiency single crystal solar panel, this kit enables fast solar charging that is safe and environmentally friendly. · **Dual USB Ports**: Charge two devices simultaneously with 5V outputs of 2.1A and 1A, making it convenient to share power with family or friends. · **Intelligent Power Saving**: Automatically stops power output and switches to low-power mode after devices are fully charged to save energy and prolong battery life. · **Comprehensive Safety Protections**: Built-in safeguards protect against overcharge, overcurrent, over-temperature, over-voltage, overload, and short circuits, ensuring the safety of your connected devices. · **Wide Device Compatibility**: Compatible with most smartphones, tablets, cameras, and other digital devices requiring DC 5V input. · **DIY Assembly Kit**: This is an assembling case kit for a portable solar power bank. Battery not included; compatible with 606090, 909060, or 7565121 polymer batteries. Specifications: · Battery Capacity: 20000mAh (battery not included) · USB Input: 4.2-6V / 900-1200mA · USB Output: 5V 2.1A and 5V 1A · Dimensions: Approx. 161 x 79 x 17 mm · Available Colors: Green, Yellow, Orange, Black (optional) · Compatible Batteries: 606090 / 909060 / 7565121 polymer batteries (not included) Package Includes: · 1 x Solar Power Bank Case Kit Note: This product is not waterproof and requires battery installation for full functionality. Perfect for those who enjoy customizing their portable solar charging solutions, this solar power bank kit delivers efficient, safe, and versatile charging power for your outdoor adventures.