Before the hurricane even came through my power went out and my MP40W with battery backup kicked right in. 61 (yes you read correct) hours later it was still going. All I can say is I believe that it was absolutely worth the money (even though it was hard to swallow at the time). I only have one backup battery currently on my 200, I lost no fish and the water stayed clean. On my 120 without one the water turned milky, lost 2 fish and even my xenia laid down! I am a FIRM believer in them now and I WILL be buying another battery backup. I just hope that the new ecotech batteries are as strong as the Icecap one I have!
Again, I do not agree with the high price, but it the long run definitely a great insurance to have them kick in and out as needed!
Again, I do not agree with the high price, but it the long run definitely a great insurance to have them kick in and out as needed!