Used 6v Batteries
I found 2 Trojan 6v batteries for $50. They were supposedly used 1 year on a lift truck and then pulled and replaced with some AGMs, no idea why. The seller says he "charged and tested these tested from 6.5 to 6.7 Volts at rest, load tested 5.7-5.9 with an amp load of 43 to 45 Amps"
Since I've been thinking of switching to a pair of 6v batteries this looks like a pretty inexpensive way to go, but is there a way to test to see if I can reasonably expect a few years life out of these, or does the above information provide enough to make a judgement?