Features: Experience easy assembly with our detachable 18650 battery case, featuring a quick snapped design that eliminates welding for easy setup. Crafted from high strength plastic, this battery holder offer durability and wear resistance, with built in overload protections to prevent overheating and short circuits. Ideal for beginners and users who lack soldering skills, seeking a user friendly and sustainable battery solution. Perfect for daily commutes or outdoor adventures, providing stable support for multiple devices during travel situations. Extend battery life and reduce electronic waste with this innovative battery case, promoting a safe life for home use. Specifications: Component: plastic Color: black, white, yellow (optional) Size:Approx.104x50x26mm/4.09x1.97x1.02inch 3Option Color, Features: The detachable design ,LED Light; Case only, other accessories in the picture is not included! Tips: 18650 batteries are not included in the package, you need to purchase separately. Can only use the 18650 battery of which positive electrode is flat top. Please pay attention to the direction of the positive and negatives poles. After installing the battery, please fully charging it and activate it before outputting. Package Includes: 1pc Battery Box note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.