This Li-ion battery charger, model LI3S99A(B), is designed to provide a reliable and efficient charging solution for your device. With a voltage output of 54.6V and compatibility with Li-Ion batteries, it is the perfect choice for all your charging needs. Whether you need to charge your phone, tablet, or other electronic device, this charger will get the job done quickly and effectively. The charger is also equipped with a mains plug, making it easy to use anywhere with a mains power supply. It falls under the categories of consumer electronics and multipurpose batteries and power, making it perfect for those who need a versatile charging solution. Get your hands on this charger today and never worry about running out of power again!