Dual USB output for Android/iOS phone charging. LCD display, the working voltage/current or battery charging condition all can be displayed. Can charge any capacity 18650 battery, if battery install wrongly, IC chip immediately protects the motherboard from burning, as long as one battery is properly assembled, it can work. Type: Power Bank Case Material: ABS Battery Type: 4 x 18650 Liquid Lithium-ion Battery (Not Included) Battery Shape: Cylindrical Aluminum Shell Conversion Rate: 85% Input Voltage: DC 5V 2A Output Voltage: 5V/2.5A Suitable Battery Capacity: 2000mAh - 12000MAh Features: LCD Display, Universal, Portable, Smart Charge, DIY Power Bank Size: 115mm x 82mm x 26mm/4.53inch x 3.23inch x 1.02inch (Approx.) Notes: Please pay attention that this is only a battery charger, batteries are not included, you should purchase battery by yourself. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Power Bank Case (Battery Not Included)