Description: DIY Power Bank: Large capacity with 4 x 18650 Li-ion rechargeable batteries (batteries not included). Compatible with various models of mobile phones and USB devices that support cable charging function. Interface: 2 x USB quick charge ports out, 1 x Type-C port in, 1 x micro USB port in. LCD Power Display: Accurate display of power, keep the battery status at any time. Support voltage and over-current protection, short circuit protection. Easy to Use: Compact and lightweight design for easy carrying, perfect for travel and outside activities use. Widely compatible for IOS Phones, IOS Pad, MP4, PSP, cameras, etc. Specification: Material: ABS Plastic Size: Approx. 11.9x7.6x2.3cm/4.69x2.99x0.91inch Input voltage: DC 5V Output: DC 5V 3A, 9V 2A, 12V 1.5A QC protocol: Support QC 2.0 / QC 3.0 / FCP / SFCP / AFC / MTK / BC 1.2/PD Package Includes: 1 Piece Dual-USB Power Bank Case (Batteries not included) Note: 1. Do not use pointed batteries. Batteries with damaged appearance are not use. 2. It is not recommended to use the battery with high internal resistance, long storage time and many times of use.