Features:· Two-way fast charging·14.1mm thin·High-capacity Li-Pol batteryMultilayered security system Energy supplies for the whole day· Technology upgrades· Thin and wiry·       High-capacity Li-Pol battery· ·Temperature resistance·Input overvoltage protection· Short circuit protection·Disconnect protectionEnergy supplies for the whole dayPair the battery with a device, that needs the energy boost, and carry on with your morning routine. Quick Charge 2.0 technology assists in charging your smartphone, tablet or camera faster. Usable battery capacity is 6900 mAh. It can juice up Xiaomi Mi 5 battery for 2.4 times and iPhone 6 for 3.7 times.Technology upgradesSmooth metal texture next to an ergonomic design creates a product one can draw inspiration from. After anodic oxidation process, its aluminum body has adopted structural strength and durability: it is waterproof, resistant to corrosion, scratches, dents and discoloration.Thin and wiryBulky portable devices are always a thorn in one’s side. Xiaomi Mi Power Bank 2, on the contrary, is perfect if you have a little space left in your bag or jacket pocket. It is only 14.1 mm thin and weighs 207 gram.Mi Power Bank 2 is much thinner than a previous model. It is comfortable to carry in one hand along with a telephone.High-capacity Li-Pol batteryIn a bid to develop a high-performance product, Xiaomi has built an expert team: ATL and Lishen Battery worked on polymer batteries and microchips were produced by Texas Instruments.The number of complete charge-discharge cycles is increased, which means that the battery is able to support all of your devices with power for much longer before its capacity starts to fade. Microchips keep input-output voltage stable, regulate internal resistance and enforce energy conversion.Multiple layers of securityXiaomi conducted various tests to make sure device works correctly, thereby prolonging battery life. If an abnormal situation occurs, 4 LED-lights will be blinking altogether.Temperature resistanceOverheating problems are reduced as the mechanism is able to detect intensive usage and set optimal operation temperature.Input overvoltage protectionVoltage surges have less impact.Output overvoltage protectionIf output voltage goes beyond the maximum limit, the gadget shuts off to prevent itself from damage.Short circuit protectionIn the case of a short circuit, the device will shut off to protect motherboard and battery.Disconnect protectionThe electrical circuit is interrupted if the cable is disconnected from the device.Overcharge and over discharged protectionWith a help of Japanese technologies overcharging and over-discharging are less harmful to the battery.Reset protectionPower button initiates system reboot and stabilizes its condition.Output overcurrent protectionOutput overcurrent problems are removed as the mechanism timely detects them and shuts off.Incorrect insertion protectionMi charger automatically shuts off if it detects an incorrect insertion.