Due to other reviews with similar experiences, I have several times taken the time to charge the battery evenly and completely so that the battery gauge is readjusted (some notes on the Internet was apparent that the POWER-POND has a problem with solar panels). Unfortunately change also a month "battery maintenance" not alter the fact that he was already defective on arrival. According to Amazon, is a return not (more) possible.
Conclusion: Before so do other stakeholders bother re "adjust" the battery: Saves you the time and send the thing back. Otherwise you will end up sitting on the broken thing - as I now :-(