Brand New Charger case hold 40 AA Batteries (Included) This set of 40 quick rechargeable AA batteries with a charger is a must-have for anyone in need of reliable power for low drain devices or solar/wind devices. The batteries are made by Fever, a trusted brand in the market, and have a voltage of 1.2V and a battery size of AA. The batteries are manufactured in China and come with a 1-month manufacturer warranty. They are ideal for use in multipurpose batteries and power applications, as well as sound and vision devices. With this set, you can rest assured that you will always have a fully charged battery at your disposal.