Power Bank for your pocket.

These low battery or better the Power Bank you get a small, useful companion for a whole range of devices.
I tested him. With two smartphones, a TomTom navigation (Go 50), a Huawei Android Tablet and Kindle Paperwhite In all these devices the Xoro MPB has 250 works as a mobile charging station and as an external spare battery, making it much more flexible than a replacement battery for only one device, being carried out at several of the above. electronic equipment could ever replace any battery, at least not by yourself.
On the side of the manufacturer, I have discovered the following information:
Compatibility Apple: iPhone 5 / iPhone 4S / iPhone 4 / iPhone 3GS / iPod Touch Classic Nano (Original cable required)
About a hidden port on the Power Bank I had wondered first.

The Power Bank is beautifully small and handy, only a comparison with a credit card is a bit exaggerated, this would be:
85 mm-55 mm-bank card (EU) to 9.6cm x 6.2cm the Xoro, in a wallet she therefore does not fit.
Charging other devices with Micro-USB connector folds easily with the permanently attached microUSB charging cable and the blue LED indicates reliable this process. The Power Bank itself to load takes between 4-5 hours, which should be gg. Taken into account.
2500mAh are but not much is enough for a one-up / recharge all devices whose batteries have built no higher capacity.

Conclusion: Replaces no replacement battery, but useful for the worst-case scenario, versatile and affordable backup power.