This external power bank charger case is exclusively designed for Samsung Galaxy S4(SIV) i9500/i9505. It has high capacity 3200mAh polymer lithium battery and can be multi-functional as backup battery and protective back cover!   Features: Works both as an extended emergency battery and a

This external power bank charger case is exclusively designed for Samsung Galaxy S4(SIV) i9500/i9505. It has high capacity 3200mAh polymer lithium battery and can be multi-functional as backup battery and protective back cover!   Features: Works both as an extended emergency battery and a protective back cover. Reserved camera hole for easy shooting with the power bank case on. Foldable stand for propping up your beloved phone easily. Back cover design for easy installation and removal. Ultrathin design and perfect dimensions. Super lightweight and convenient to carry. Specifications: Input: 5V 1A Output: 5V 0.8A Cell type: Polymer lithium battery Capacity: 3200mAh Cycle life: 500 times Operating temperature: -10 - 45 Celsius Degree Charging time: about 1.5h Color: Black or white Material: ABS PC Product size: 14.7 * 7.3 * 1.4cm / 5.79 * 2.87 * 0.55in(L * W * Max. T) Product weight: 82g / 2.89oz Package size: 16 * 8.4 * 3.4cm / 6.3 * 3.31 * 1.34in(L * W * T) Package weight: 158g / 5.57oz How to use: 1. Slide your phone into the backup battery cover and make sure that your phone is well connected to the male micro USB dock connector on the power bank case. 2. Press the ON/OFF switch for long time(3-5 seconds) to activate(or to stop) charging, and confirm the charging signal on your phone. 3. Press the ON/OFF button once to check how many battery capacities are left. (1LED: ?25%, 2LED: ?50%, 3LED: ?75%, 4LED: about 100%) Package includes: 1 * Power bank case(Accessory ONLY, phone not included) 1 * English user manual