
This is a good charger with 4 AC and 4 USB ports. It delivers between 1A and 2.1A with a maximum total output of 4A, meaning you can probably charge a phone and a tablet at the same time, but anything else will likely increase the charge time. It's not very small either, so I don't think it's very travel-friendly when you might need to charge multiple devices at the same time. I charged my ipad mini 2 and it took less than an hour (53 minutes) to add 30% to the charge (from 45% to 75%) which is about the same as what I get with other chargers. I'm giving 4 stars because of the maximum output power of 2.1A per port (should be at least 2.4A today) and for the total power output of 4A (something that big should be able to charge at least 2 tablets at full speed, that means it must have an output current, probably higher than 5A).

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