This battery adapter is a versatile and handy tool for anyone who needs a reliable power source for their electronic devices. It is compatible with Li-ion batteries and can be used to power up various devices such as Dyson and Dewalt appliances. The adapter comes in an open box and is in perfect working condition. The adapter is designed to allow you to use batteries of different sizes and models, making it an ideal solution for those who need a flexible power source. It is easy to use and can be connected to your device in seconds. The package includes all necessary accessories, as shown in the pictures. This battery adapter is a must-have for anyone who needs a reliable power source for their electronic devices.