The battery is strong and compact. I have had a good experience when loading my camera or mobile phones. The white double-LED is a nice feature (double-click on the button), while it is also quite bright and is enough to read in the dark something, or to look for something. The four-part charge indicator is also very convenient.
One must when you connect a device to be charged, however, always remember to activate the battery also. That is a time to press the button!
