This Canwelum Lithium Ion Battery 2 Pack is perfect for powering your high and low drain devices. It is a rechargeable unit with a voltage of 3.7V and a chemical composition of Li-Ion. The unit quantity is 2 and the battery size can be seen in the pictures.

The brand of the battery is Battery and the type is AA. It also comes with a manufacturer warranty so you can contact them if you encounter any issues. This battery is versatile and can be used in various applications. It is a great choice for anyone looking for a reliable and long-lasting power source.