Worst case scenario- if you have most or even all of the Lithium Cells intact, you can part out the Miev, make back a lot of your money, order some fresh BMS, re-solder a connection or two....and upgrade the Electro-Metro to Lithium! Then sell the Lead batteries or use for other projects.
And if you don't even have enough lithium cells intact for the Metro-upgrade the Electric Cycle instead.
Naturally i'm hoping for a BEST case scenario, but it sounds like you've already found a lot of corrosion...
