I would love to spend less on batteries, but from what I've seen I would have to build a vent box and I'm not sure that would be feasible if I want to move it from apartment to apartment. If there was a simpler way to vent the batteries I would consider going the flooded battery route.
I also considered a grid-tie, but there are a lot of safety issues and l'm not sure if I want to risk pissing off my landlord or get disconnected by my utility/ deal with connection agreements. While it's less efficient and more costly, it also provides options in the event of a blackout or grid failure which in itself is hard to put a price on.
Would it be possible to vent the batteries individually with clear plastic aquarium tubing? I seem to remember seeing a flooded battery that had that once, but idk if all batteries have that option... :S
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