Rolls/Surrette 1350ah batteries
I have twelve used Surrette/Rolls 4KS25PS batteries available for sale. They are monsters. Each is 1350ah at 4V, and weighs about 300 lbs. They have been in service at an off-grid house for the past 10 years, so not spring chickens, but are specified to have a 15 year life span. They were still running strong when I cut over to LFP about 60 days ago. I had them all wired in series for 1350ah @ 48V, but they can be wired for 2700ah @24V, or a whopping 5400ah @12V, if desired.
These would be great for someone's electric boat conversion project, and can double as ballast. Actually, there are the batteries that Dashew uses for just that - power and ballast. Or just use them for days, if not months at anchor with no generator. (just kidding about the months part, but you never know....)
I have a fork lift and trailer and can help with transport in New England. Beyond that, you would have to come fetch them, and I can help with loading. But they weigh around 3600 lbs all told, so forget about moving them in a pickup or SUV. You will need a real truck, or trailer with reasonable capacity.
New, these sell for about $1300 each. I am offering for $200 each with a minimum of 4, $150 ea if you take them all.