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Hi All, I'm hoping some of you can answer my non car related electrical questions. I have a large fish tank which needs power to some components 24/7. I've thrown around the idea of buying a generator in the past but the need to be on my property when power goes out threw that out the window. Now I'm thinking about a battery and trickle charger with an inverter in an attempt to ensure uninterrupted power for my pumps. So, in my head, I'm thinking this; 3 pumps in my tank that I need to run are about 200w total (thats about 60w bigger than actual, but I'd like to over estimate than under.) A 50AH deep cycle battery will run these pumps quite easily for 24hrs. A 300w inverter will allow 240v access to the batter. A good ol' trickle/maintenance charger will keep the battery charged. Power outage means that the fully charged battery will take over. Is that sane? Am I missing anything? It seems too easy. I guess the only thing I am really wondering about is maintaining the health of a battery when it is charged at 100% for 99% of the year. Should I make it work every month? Switch off the mains to it to force it to cycle? Would love any help. Thanks, Christian