Used A123 Lifepo4 batteries

Have an opportunity to buy very cheap A123 24V 8s Lifepo4 batteries units from a late model Fisker.
These are 7 years old, with "Low mileage". I know most poeple are buying new batteries...the discount is too much not to consider this, so im wondering about the expected life/longevity of these and what I could realistically expect worst case.

Considering this car was a true plug in hybrid (I didnt know this actually), id expect them not to really have been cycled too much...
The car is plug-in with an engine that works solely as generator to charge the pack. Would there be other parts good to grab off it?

Batteries are currently at 22.3 and 22.4v. Its an hour plus away so cant really go there multiple times to test, etc...

Anyone used older lifepo4 with good results? Is it too risky? Is there a quick and easy test to see battery life?

22.3 /8 is 2.78V cell, it is very close to die (usually said 2.5V)
you should charge the battery immediately and check if rest voltage is ok (at least 27V)
If yes, i would only take it if it is VERY cheap.
i do not know what parts are available, but if there is a charger, you could take it as well.
(and the motor that is charging battery, could be a nice way to replace a gas generator)

Yeah...the parts are pretty cool. If only I had space for a full engine. Generators off tehse can be had on ebay for like $500...mount to any motoro you want then not a camry engine.

thanks for the info on cell voltage resting. How long should I wait between charge and rest measurement a day or week or? Thanks

a few hours is ok.
if a cell is damaged, it should goes down in a few minutes.

Hard to test a battery that is maybe 70% discharged. Other than measuring each cells voltage. Any cell that is much lower than the rest is likely bad. You want pretty uniform readings from cell to cell.

If they passed with no bad cells - I'd buy them all. Anywhere close to Colorado - if they have more than you need?

If you can get a good 12V tester you might get some meaningful numbers by testing 1/2 the cells at a time. Still tough at that charge level.

The generator on this is 175kw - crazy amount of power.

I just found out these wont work...they are only 7s batteries, and the current SOC is actualy what its designed for. I need 24V. Damn...