Description 5200mAh battery case compatible with iPhone 8 / 7 / 6S / 6 Specifications: Brand: RUNSY Compatibility: for iPhone 8 / 7 / 6S / 6 Nominal capacity: 5200mAh (19.24Wh) Material: ABS PC Input: DC5V/1.5A Output: DC5V/1.5A Battery cell type: Lithium Polymer Charging time for the phone: 1-2 hours Charging time for the battery case: 6 hours User tips: 1. Slide the phone into the battery case. Make sure that the phone is well connected to the connecter of the battery case. Then you can start to use the phone. 2. Charging for the phone: just press the power button on the back of the battery case to start charging. And press the power button again to stop charging. 3. When you charge the battery case with the phone attached, the battery case will be charged. If you would like to charge the phone first, you have to turn on the power button on the back of the battery case. When the phone is fully charged, the battery case will be charged next. What’s in the box: 1 x RUNSY 5200mAh battery case compatible with iPhone 8 / 7 / 6S / 6 1 x User Manual Note: 1. Please charge the battery case fully and deplete the power of the battery case completely at the first use. 2. Please use the original charger that comes with the phone to charge the battery case. Generic or non-original chargers usually cause the battery case to malfunction. 3. Please turn off the battery case while not using.