The Kanex DoubleUp is a charger designed to charge two tablets, such as iPads, each at their maximum rate of charge which is just over 2 amps each.
Most dual charging devices offer at most one 2 amp USB port and a secondary 1 amp USB port. Most dual chargers though in general offer only 1 amp ports, and that is if you are lucky.
Why it Matters?
For smaller devices with batteries under or around 2,000ma it might not matter much. It only takes a couple of hours to charge those batteries, and many devices will only even take up to 1 amp anyway. But for larger devices like tablets which might have batteries in the 4,000-5,000ma range, it could take almost all day to charge them with only a one amp charger.
Larger phones like the Samsung Galaxy Note also have big batteries, so these kinds of devices benefit dramatically from rapid chargers like the Kanex DoubleUp.
The DoubleUp is a very simple and lightweight device that has a built in retractable 110v outlet in it. To use it, simply flip open the plug and stick it in any old outlet nearby. Attach your USB cables to the bottom, and plug in your devices. You’re done!
If you have multiple tablets to charge, like one iPad for yourself, and another for that special someone, the Kanex DoubleUp will quick charge them both in just a couple of hours.
You can pick up a DoubleUp on Amazon for $28. I’ve been using it for over a month, and it’s proven reliable and useful. I recommend it.