HIGH CAPACITY BATTERY CASE- Galaxy S8 Battery case @ 5500mAh. It offers up to 120% extra battery life,which is equivalent to add 52 hours talk time or 20 hours web browsing time. OPTIMIZED FOR Galaxy S8 - ZeroLemon battery case features Type C input charging port, you can use the original charger and cable to charge both phone and battery pack simultaneously. Pass through Quick Charge Support (Phone Only). DOUBLE PROTECTION & SHOCKPROOF: Soft TPU case to ensure a perfect fit with your Galaxy S8 and guard your phone from drops and hard falls. Feel confident with a phone case that delivers reliable protection all day.