Charger for Sony DCS-HX20V

Have the charger bought because my battery charging has gone into the camera on my nerves. The camera must be yes also can be used when the first battery is empty, it should be but loaded. Device is easy to use and quite inexpensive. But you have to be careful that you insert the battery with the back to the front, because otherwise the device displays a false charge status and can not charge the battery. But the battery does not break when you insert it in the wrong direction.