14 DAY TRIAL // Portable battery packs are all well and good, but they kind of defeat the purpose of having a mobile phone when they, themselves, are larger than the gadgets.
Still, there may come times when the energy of phones, tablets and other USB devices depletes.
In those instances, it helps to have an emergency power bank around.
As such, Powerocks made the Tarot, the world's smallest backup battery ever.
It is as large as a credit card, though much thicker, understandably enough. It should still fit quite snugly in a wallet though.
A USB port is included, of course, otherwise there would be no way to transfer the energy. There should be enough for a full smartphone recharge (1500 mAh), though people may just choose to hook it up to their phones only when they need to make a call, extending its use.
The price is of $35 / 26-35 Euro.