Number 5 on the list, dubbed 'power in the pocket,' is the ChargeCard!
There is a direct correlation between a phone charger’s usefulness and how easy it is to carry. The ChargeCard by AquaVault ($60; theaquavault.com) has the same footprint as an Amex, so it slips into a wallet sleeve, but its internal battery has enough guts to nearly fully charge a smartphone in a pinch. About the weight of two AA batteries, the card’s swappable cables let you juice up iOS and Android phones with a compact design that’s easy to hold against the device.
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