Welcome to our shop! We are excited to introduce our Battery Case to you. This Battery Case is equipped with a spring to securely lock the battery in position, ensuring a safe and stable usage experience. The base of the case is designed to hold 3 pcs of 18650 batteries, providing you with sufficient power supply. Our Battery Case is made of high-quality material, which ensures its high structural strength and durability. With a low resistance overall, this holder can effectively reduce energy waste, allowing for more efficient use of batteries. Additionally, it is equipped with 2 wires of different colors, making it easy for you to distinguish between batteries. The Battery Case is compatible with 18650 batteries and is available in black color. Its dimensions are 76.34 x 61 x 20.79mm (3.01 x 2.4 x 0.82in). Please note that batteries are not included in the package. 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.