Recharge your lithium batteries efficiently and safely with this versatile Battery Power Adapter, designed to support multiple voltage options of 16.8V, 18V, and 21V. Ideal for a wide range of lithium-powered tools, this adapter enhances practicality by meeting the varying voltage requirements of different devices, making it a perfect charging solution for professionals and hobbyists alike. Key Features: · Multi-Voltage Compatibility: Offers three selectable output voltages—16.8V, 18V, and 21V—allowing compatibility with various lithium battery tools and expanding its usability across multiple devices. · Fast and Efficient Charging: Utilizes advanced charging technology to quickly recharge lithium batteries, significantly reducing charging time while boosting overall work efficiency. · Enhanced Battery Protection: Equipped with multiple built-in safety mechanisms including overcharge protection, overheating protection, and short-circuit protection to ensure safe charging, minimize battery damage, and prevent potential safety hazards. · Durable and Reliable Construction: Crafted from premium plastics and metal materials with meticulous manufacturing processes, this adapter delivers high durability and stable performance in diverse environments for long-lasting use. · Compact and Portable Design: Lightweight and small-sized for easy transport and storage, this adapter is suitable for use in various settings. The integrated LED indicator provides clear, real-time feedback on charging status for user convenience. Specifications: · Product Name: Battery Power Adapter · Material: Plastics + Metal · Output Voltage: 16.8V / 18V / 21V (optional) · Input Voltage: 100-240VAC · Output Current: 1A · Item Dimensions: 87 x 50 x 68 mm (3.43 x 1.97 x 2.68 in) · Item Weight: 69g (2.43 oz) · Package Dimensions: 100 x 80 x 60 mm (3.94 x 3.15 x 2.36 in) · Package Weight: 73g (2.57 oz) Package Includes: · 1 x Battery Power Adapter This Battery Power Adapter combines multi-voltage flexibility, efficient charging performance, and comprehensive safety protections in a compact design. It is an essential accessory for anyone needing a reliable and convenient solution to recharge lithium batteries for various tools and devices.