ZAAP® (USA) 9100mAh Lithium – ion Battery, Waterproof/Shockproof/Dirtproof/Rugged Power Bank (Black and Blue).

Rated #1 : the techbeats 1 pick for water resistant portable power bankall-weather power bank/charger: water resistant, dustproof, and shockproof; tough body with international ingress protection rating of ip67. Universal compatible ces award winning design: Very best for bikers, campers, hikers, skiers and plenty of other out of doors enthusiasts. Accommodates 9100 mAh of power.
AWARD WINNING DESIGN: Very best for Bikers, campers, hikers, skiers and plenty of other out of doors enthusiasts. PowerFlo Technology: Detects your device to deliver its fastest imaginable charge speed as much as 2 amps (four times faster than a pc USB port). High Capacity: Large 9100mAh capacity for iPhone, Samsung and other smart devices.
MULTIFUNCTIONAL CHARGER: Built-in flashlight and to hand compass included, Very best for active life style. Turbo Charging 2.1A . The average efficient of the power bank out there is about 80%.
IMPRESSIVE PERFORMANCE: Max 2A output, can charge almost any smart device at top speed; DC 5V 2.1A input, saving as much as 50% of the charging time. #1 Rated: The TechBeats #1 Pick for all weather portable power bank