This big battery pack almost weight 1 lbs and packed a hefty 20k mAh capacity. Over 3 days of charging 3 phones about 2-3 time each, along with camera batteries, it still manage to have a 1 bar (25% or less) of capacity left. There’re 4 output ports, each can handle 2.4A each. However, if all 4 port are used, they maximum output is only 4.8A and I do wish this was slightly stronger. What set this battery apart from many of its competitor is dual 2A input for a total of 4A charging which result in the battery pack fully charge in 6-7 hours. In practice this work just advertise and it took me almost 7 hours to top it off when it was nearly dead. There’s also a small LED “flashlight” that can be activate by double clicking on the power button on the unit. Overall a very powerful battery pack and it seems to be pretty efficient of hold charges.
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