This 4-slot battery charger is perfect for those in need of a reliable and efficient way to charge their 3.7V lithium ion rechargeable batteries. The charger is compatible with UitreFire batteries and comes with a UK plug for easy use. Designed for multipurpose batteries and power usage, this charger is a must-have for anyone who needs to keep their batteries charged and ready to go. Its compact size makes it easy to store and transport, while the simple design ensures that it's easy to use. Whether you're using it for sound and vision equipment or any other application, this charger is sure to meet your needs.