A lithium battery would be a better choice. You avoid the need to trickle charge during idle periods. Simply charge to 60% and then leave it until you need it.
I would invert the power. Get a 300 watt inverter like the morningstar. Very low idle draw and it makes the power more useful for lights, etc. You can 12v it. Quite a few appliance options (lights, stereo etc), but a.c. will make life easier. Pure sine is the way to go.
A good rule of thumb is 1w solar per 1 amp storage. With lithium that drops a bit. Not knowing anything about the panel you're looking at. Size wise it should suffice.
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Chevy Volt battery pack conversion
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Business where I sell solar stuff
[url]https://www.bobolinksolar.com
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