This is a perfect replacement battery charger for lithium-ion batteries. Built-in safety chips provide protection against overcharging, overcurrent, and short circuits. Made of durable and fireproof materials, it allows for safe and convenient charging. Features: Professional lithium-ion battery charger, ideal for replacing broken or lost chargers, widely used for headlights, toy cars, balance cars, and more. Wide voltage input supports universal standards with AC input voltage of 100-240V. High efficiency with safe and fast charging, 2A large current output. Built-in stable performance chips protect the battery from overheating, overcharging, overcurrent, and short circuits. Made of environmentally friendly material, safe, anti-interference, and durable. LED indicator light clearly shows charging status. Specifications: Material: ABS Color: Black Plug Type: US, EU, UK (Optional) Input: AC 100-240V 50Hz/60Hz Output: DC 21V 2A Output Port: 5.5 x 2.5mm Adapter Size: Approx. 8.5 x 4.5 x 3cm / 3.3 x 1.8 x 1.2in Package Weight: 110g Package List: 1 x Power Adapter Note: The new and old versions of this product may be shipped randomly. Please ensure you are comfortable with this before placing your order.