I did get my solar panels working again (45 w this time, because I had a Harbor Freight kit lying around). The mower charges in a day or two and i can plug 12v devices into a port I made on the mower, so now there's 12v lighting in the garage!
New battery seems to be okay - I might try an online battery next time. The almost twice more money local battery doesn't seem anything super powerful - A Duracell 29AH from BatteriesPlus - $90 with coupon.
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