Welcome to our shop! This battery holder case is designed to keep your batteries organized and protected. It has 8 compartments with springs, ensuring that your batteries are securely held in place. With a great capacity, it can store 1-8pcs AA batteries simultaneously. One of the unique features of this battery holder case is that it can connect batteries in series, allowing it to be used as an external power source with an output voltage of up to 12V. It also comes with an ON/OFF power switch and a sliding closure that can be locked by a screw, making it convenient and easy to carry. The battery holder case is made of high-quality ABS material, which is resistant to impact, ensuring its durability and longevity. Color: Black Quantity of Storage: 1-8pcs AA Batteries Material of Case: ABS Material of Coil Spring: Nickel Plated Steel Size: Approx. 13cm x 7.3cm x 2 cm Length of Wire: Approx. 15cm Output Voltage: 12V Weight: 76.5g Please note that the package includes 1 x Battery Holder Case. Batteries or screws are not included. Also, please be aware that the new type and old type of this product will be sent randomly, and make sure you are okay with this before placing your order. 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactory after-sales service.