That is a great idea.  Once Electrovaya has gotten their cell volume up and are suplying the Heavy duty customers, there should be some modules that have come back in for repair.  These could be refurbished and sold into the home energy storage market. 

I am building off grid as we speak and am about to spend a bundle on some lithium batteries that have a 10 year warranty but I expect to get 25 years out of.  I bet I could use some used 48VDC Electrovaya batteries if they were available.......  I also have several older solar systems that could use a Lithium battery upgrade.  I have been hoping Electrovaya would produce a product I could use, but there is more money in the market they are in now...................