Feature: 1. DIY Mobile Power: Large capacity with 16 x 18650 batteries (not included). Dual USB output ports can charge two devices at the same time. With three Micro/Type C input ports, any USB cable can charge the power bank. 2. Smart 18650 Battery Charger: Compatible with 18650 flat head lithium battery. Each battery slot is individually charged and tested. After the battery is fully charged, the charging is automatically terminated. Please pay attention to the positive and negative poles. 3. Easy to Use: Small and light design, the power bank case is easy to carry. Sliding cover design for easy to use, and it is easy to install and uninstall the battery. 4. LCD Display: The LCD display accurately displays the battery level, and you can keep track of the battery status at any time. Plug and play and charge at any time. 5. Wide Range of Application: Compatible with all types of mobile phones for charging, the power bank case has a wide range of uses and is a must have gift for you. Specification: Item Type: 16x18650 DIY Power Bank Model: L16 Material: ABS Product Weight: Approx. 220g / 7.8oz Battery Type: 16 x 18650 Battery (not included) Interface: 5V-2.1A Output Port: 2 x USB Input Port: Micro /Type C Scope of Application: Support all models of mobile phones for charging. Package List: 1 x Battery Box (Battery Not Included)1 x Lanyard1 x Screwdriver7 x Screw