Any thoughts on extending the life of used Nissan Leaf batteries ?

[SunEagle]

Purchasing used batteries is always a gamble. FLA would be a mistake and Li chemistry may be worth it or not.

Really hard to say without having hands on experience in battery technology along with quality test equipment.

[J.P.M.]

I'd like to see your numbers, logic and justification for the statement that they are a cost effective alternative to new batteries. Seems to me that broad claims need backup.

[Ampster]

I started this thread to stimulate some discussion about the safe use of Lithium batteries in an Energy Storage System. My particular interest is in Nissan Leaf batteries in a hybrid grid tied system. Whether off grid or in a hybrid grid tied system the assumption is that the batteries would be cycled daily.
The important issues to me are what are the tradeoffs between extending the life of these cells and depth of discharge. The assumptions are that used Nissan Leaf batteries will be previously used and suffer already suffer some degradation. The fact that they are available for $200 to $400 per kWh of capacity has made them a cost effective alternative to new batteries.