Even it has huge battery capacity of 20000mAh, the Li-Polymer battery offers compact size in outlook. Casing is made of high quality ABS & PC flame retardant materials. It supports PD charging for MacBook/ MacBook Pro/ iPhone XS Max/ iPhone XS/ iPhone XR/ iPhone X/ iPhone 8/ iPad Pro/ Switch etc. The maximum output power of PD2.0 is 18W. It also supports QC2.0 & QC3.0. The maximum output power of QC3.0 is 18W. It supports dual output and you can charge two devices simultaneously with a maximum total output of 18W. The product is equipped with Type-C two-way fast charging solution.