Portable yet powerful: This portable battery charger loads 20000mAh compacity, which can be compatible with iPhone 13 and provide about 5 charges, iPad 9 almost 2 charges, and Samsung Galaxy S21 around 4 charges; from day to night, this replacement battery will stand by you. Long Life Expectancy: by using the same manufacture’s battery cell as iPhone which is named ATL, this PD power bank features a higher QC standard, will serve as new even after 500 cycles, meanwhile it will protect your phone from over-current, over-voltage, over-charging, and over-heating, expand your phone’s lifespan.