One Battery For All Devices Huge capacity equipped with quadruple 6.2A total output, the battery pack can rapidly charge up to 4 devices (2 phones, 2 tablets) simultaneously. Universal Design Compact Sleek, and durable. The battery is designed for portability in mind. Safety First Ultra reliable A+ Lithium-Ion battery with over 500 battery charge cycles. Short-circuit and over-current protection: this portable power bank will automatic shutdown if a short circuit or overload output occurred while unit is charging. Specification Capacity: 20000mAh Input: 5V/1A (Standard Micro USB Port) Output: 2x 5V/1A max , USB 2x 5V/2.1A max Weight: about 450g Additional Notes and Tips The unit may come partially charged. It is important to fully charge the unit before using it to maximize performance. The first cycle is not indicative of the battery's maximum capacity. Due to it's large capacity, it may take up to 20 hours to charge the battery fully via a standard 1 amp cell phone charger. To expedite the process, use a 2.1A tablet charger to fully charge the unit in half the time. Ports 1 and 2 provides 2.1A output and is sufficient to charge most tablets, including iPads. Ports 3 and 4 provides 1A output, standard among most smart phones.
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