power bank case

5V USB 7X 18650 DIY Mobile Power Bank Case Kit Battery Charger Box Case Features: The shell is detachable, so you can replace the battery easily. Dual USB output has the protection of over-charge and over-discharge. Made of high quality material, it is durable and longer to use. The length of this product is 15cm, the width is 7.8cm and the height is 2.2cm. It can hold 1-7 pieces 18650 batteries. Specifications: Item Name: Power Bank Shell Kit Material: ABS,PC Batteries: Max. 20000mAh 7 x 18650 Battery (Battery Not Included) Size: 17cm x 7.8cmx 2.2cm/6.69″ x 3.07″ x 0.87″ Package Includes: 1 X Power Bank Shell Kit (Battery Not Included)