Xiaomi 10400mAh Portable External USB Battery Charger / Power Bank Compatible for Xiaomi / Samsung / LG / iPhone / HTC / Google / Blackberry (Silver) Xiaomi 10400mAh Power Bank Description: Xiaomi 10400mAh portable external power bank. 1) Beautifully engineered: 9 protective technologies2) Temperature control: a dedicated thermostat ensures cells are always working at a safe temperature3) Circuit breaker: if the device youre charging short-circuits, charging will stop immediately to prevent any further damage4) Reset: if changes in the surrounding environment cause MI charger to stop function, just tap the power button to reset the charger and continue charging5) Voltage input limit: OVP circuit protect cells from being charged with too much voltage6) Feedback protection: if the USB output is accidentally plugged in to a power source, MI charge will stop automatically to prevent damage to your devices7) Device detection: MI charger will actively check for a live power current when its connected to a device. If theres none, the charger will stop emitting power automatically8) Voltage output limit: charger actively checks to ensure that voltage output to charging devices is kept at a safe and constant rate9) Charge limit: charger will help maximize your devices battery usage life by not overcharging them10) PTC protection: if the charger overheats and an excessive amount of voltage is being released, PTC can control the flow of voltage and protect the battery cellsSpecification: 1) Battery type Imported lithium-ion batteries2) Input voltage: 5V3) Output voltage: 5.1V4) Input current: 2.0A (TYP)5) Output current: 2.1A (TYP)6) Rated capacity: 3.6V/10400mAh (TYP)7) Charge time Approx. 5.5 hours @5V/2A with standard cable8) Size: 90.5mm x 77mm x 21.6mm9) Load detection Auto-detects device connection and removal10) Safety features This product supports High voltage input limit, Feedback protection, Current output limit, Voltage output limit, Circuit breaker, Charge limit, PTC, Charge/discharge temperature Control11) Protection and recovery Reset feature can be activated while device is charging12) Charging temp 0 Celsius-45 Celsius (TYP)13) Discharging temp Start up discharge temp: -10~+50 Celsius (TCelsiusYP)14) Discharging temp: -20~+60 Celsius (TYP)15) Weight: 250g