Introduction The Lithium-Ion battery pack WLBP540 is a powerful and versatile tool that can be used to power a variety of devices, including power tools, laptops, and electronic devices. The battery pack has a large capacity of 5400mAh, which provides long-lasting power. It also has a built-in intelligent chip that protects the battery from overcharging and discharging. Features Large capacity of 5400mAh Built-in intelligent chip Protection from overcharging and discharging Compact and lightweight design Durable construction Specifications Voltage: 18V Capacity: 5400mAh Input voltage: 100-240V ~ 50/60Hz Output voltage: 18V Output current: 2A Charging time: 3-4 hours Weight: 1.5 pounds Dimensions Height: 5 inches Width: 2.5 inches Depth: 1 inch Use The Lithium-Ion battery pack WLBP540 can be used to power a variety of devices, including: Power tools Laptops Electronic devices To use the battery pack, simply connect it to the device using the included cable. The battery pack will begin providing power to the device. Package include Lithium-Ion battery pack WLBP540 1 x charging cable Instruction manual Safety Guidelines Always use the battery pack in a well-ventilated area. Do not use the battery pack if it is damaged. Do not use the battery pack to power devices that are not compatible with the battery pack.