Amazon has 10000mAh Portable power bank [amazon.com]
ultra slim design with dual USB output ports and LED flashlight for $14.
Promo code: 8NPKVEUG
makes it 30% off list price $19.99.
- Ultra slim design just like an iPhone. 10000mAh capacity is more than enough for all day trip which can fully charge your iPhone 7 three times.
- Smart IC and dual USB output ports (2.1A and 1A) allow for charging your iPhone and iPad simultaneously and 1.4X faster than standard charger.
- Cool LED Flashlight - turn on/off the LED flashlight by double click the power button.