Anker PowerCore Slim 5000 Portable Charger, Ultra Slim 5000mAh External Battery with Fast-Charging PowerIQ, Pocket Friendly Power Bank, Perfectly designed for Smartphones has 4.2 rating out of 5.0.
Slim and light for optimum portablity
Multiple smartphone charges
High-speed charging technology
Anti-Slip: A silicon rear panel ensures that PowerCore Slim carefully grips your phone
Maximised Convenience: Slim, light and carefully crafted to fit almost unnoticed into your pocket or bag.
PowerIQ Technology: By intelligently identifying any connected device, PowerIQ delivers the optimum, high-speed charge to all devices.
Ergonomic Build: It sits perfectly in palm, pocket or pack ready to go anywhere you do.