This is completely weird, when power was restored the battery backup showed red light, meaning its charging. Within an hour it was back to green, meaning it was completely charged or at least charged somewhat. I unplugged the vortech from the wall out let and the battery backup took over and the vortech functioned on low speed as it should, the battery was still plugged into a different outlet that was working. The light continued to be green showing the battery as having full charge or at least some amount of charge. When I unplug both the vortech and the battery backup from the wall outlet to see what the level of charge is there is nothing, no power to the vortech controller. So I went out and threw the breaker to the main tank to just see what would happen as if a power outage was going on. I get nothing. This leads me to believe that the battery is actually not charged? and it only worked when the battery was plugged into the outlet that was working. Whatever is going on it is not good as the battery is not backing up my vortech when needed, a real power outage. Frustrated!!!