Super slim 9.9mm power bank. So thin, you won't know it's in your pocket. Keep things light. The 5000mAh power bank is designed for everyday use. Stash it in your bag or pocket - it's so slim you won't even know it's there. Premium lithium-ion polymer batteries Sourced from

Super slim 9.9mm power bank. So thin, you won't know it's in your pocket. Keep things light. The 5000mAh power bank is designed for everyday use. Stash it in your bag or pocket - it's so slim you won't even know it's there. Premium lithium-ion polymer batteries Sourced from reputable suppliers such as ATL, premium lithium-ion polymer battery cells add 5000mAh of battery life to your smartphone, tablet or digital camera. Mi Power Bank’s adopted USB smart-control and charging/discharging chips from Texas Instruments provide nine layers of circuit chip protection while enhancing efficiency. Model NDY-02-AM Battery type Lithium-ion polymer battery Input voltage DC 5V Output  voltage DC 5.1V Input current 2.0A(TYP) Output current 2.1A(TYP) Rated capacity 3.7V/5000mAh(TYP) Charging time 3.5 hrs with 5V/2A plug and standard cable Weight   -156g Heat-sensitive and temperature control mechanisms ensure Li-ion batteries operate within a safe range. The motherboard and battery are automatically protected if short circuit occurs. Reset the power bank if it stops responding by simply pressing the Power button. Input Over-Voltage Protection Automatic Charger Protection Output Overvoltage Protection Monitors output voltage and shuts off when voltage exceeds the maximum limit to protect the device. Overcharge and Over-discharge protection Imported battery cells are equipped with PTC to effectively control and protect batteries when temperature and current exceed the maximum limit. 1 time charge on Xiaomi MI4 1.8 times charge on iPhone 6 2.2 times charge on iPhone 5S Mi Power Bank automatically adjusts its output based on the connected device. It's compatible with smartphones and tablets from Mi, Apple, Samsung, HTC, Google and BlackBerry as well as a variety of digital cameras and handheld gaming devices