Features:-[Material Guarantee]: This battery adapter is made of high-quality materials, with stable performance, sturdiness and durability. Multiple protection functions, safe and reliable to use. -[Multifunction]: It has a USB port, which can charge mobile phones and tablets. -[Safety Guarantee]: It has rechargeable, fast charging, high-quality battery cells, charging protection and continuous replacement. -[Long use time]: It achieves Energy Star by protecting the battery, reductively extending battery life and saving energy. -[Convenient application]: It can be converted from Miwakie M18 series sliding lithium-ion battery to V18 18V series lithium-ion battery. Use with Miwakie 18V lithium battery. Specification:Produce Name:M18 lithium battery adapter; Material:Plastic; USB output port:DC 5V / 2.1A; Voltage:18V;