Features: Brand new and high quality Double tap the side button to turn on the LED light. Made of premium material, it is wear resistant and durable. LCD digital display, easy for you to monitor the real-time battery bank capacity, real-time voltage and current. Can be installed 8 18650 lithium battery. DIY design, easy and convenient to use. Specifications: Input: 5V 2A Output: 5V 2A Input port: 1 Type C, 1 Micro USB Output port: 2 USB Size: approx. 173x83x23mm/6.81x3.27x0.91in Battery: 8x 18650 (the product does not include batteries) Color: Black, White, Blue, Green ,Purple(optional) Note: 18650 batteries are not included in the package, you need to purchase separately. Can only use the 18650 battery of which positive electrode is flat top. Do not close the cover untill the test it is finished, it can not be open again if closed. Package includes: 1PC x Battery Holder Box