+ Powerful batteries
+ It can be loaded always 2 pairs of batteries, charging each pair has an LED so that an independent charge of 2 pairs is possible
+ No excessive heating of the device
+ Durability of the batteries are fully ok
- Longer charging times, not necessarily suitable when very often used batteries
- Although in the description: "The power solution for digital cameras and other electronic devices that are typically operated by disposable AA and AAA batteries" is the device only for AA batteries suitable
Conclusion: compact, cheap, good, but just for occasional shop or travel