Sometimes you don't realize just how much you rely on your phone until its battery dies and you're left with a very expensive paperweight. No catching Pokémon, no checking Facebook, and no calling home until you find a power socket and a charging cable. Invest in a battery case and you can avoid this problem as well as give your phone some extra protection at the same time. 

Specifications :

•  Function: Power Case
•  Battery Capacity: ≤1999mAh
•  Compatible iPhone Model: iPhone 6 battery ,iPhone 7,iPhone 6s plus
•  Compatible Brand: Apple iPhones
•  Material: Plastic
•  Type: lithium polymer battery
•  Compatible Models: Apple iPhone7
•  Battery capacity: 1500mah
•  Input port: micro 5PIN
•  Output Ports: USB 2.0 
•  Input voltage: DC: 5V
•  Output voltage: DC: 5V
•  Output Current: 1000mAh
•  Input Current: 1000mA 

Feature :

• Emergency charge: No fixed power wherever you can charge the phone and allows the phone to charge while on the move
• Fashion: Ultra Slim, 0.2inch thickness, light and easy to use stylish appearance
• Lightweight and convenient: when the work or travel, you can take in your pocket, purse, briefcase or luggage, it can replenish their energy when the phone is no electricity in time
• Safe and reliable: over-voltage current protection circuit, take care of your cell phone and your cell phone batteries well
• When you plugged data cable in the case, it will charge the case first, if you want to switch charge the phone, just press the button, it will change charge the phone, when the phone battery 100% full, it will Intelligent change charge the case again!