Visually appealing good charger on the go (involves blue version)

The RAVPower spare battery, has a nice design and a sufficient capacity mobile (about 2000 mAh battery) 2 - 3 times to load. Directly striking is the compact hand-flattering shape. The device can be easily in a backpack or jacket pocket stow and is small enough to make it at any time while having.

I myself use it for all outdoor activities and traveling. Over Christmas I was able to test the device at -20 degrees temperature and under these, difficult for many accumulators conditions, the external battery worked very well. The only I identified weak point is the charge status display. It shows a long time with a charged battery and is in the lower charge level then back unevenly quickly.

Summarizes the advantages and disadvantages
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+ Small compact shape
+ Sufficient capacity for 2-3 loads (2000 mAh battery)
+ Reasonable, but not really bright LED lamp
+ Even under extreme temperatures reliable function

- Charging indicator (four LED light panels) are not the correct battery level again
- Relatively long charging time (of course, depending on the used charger)

All in all, a practical battery, which should be in every backpack or suitcase!