I got two 240 Ah NiCd batteries. They are in some kind of wooden frame. One battery contains seven cells. They're haevy as h.ll! I am just beginning to charge them. They come from a train company, and have some voltage ( about 9V).
There is a labal on them says that I must fill them only with distilled water.
I hope I could use them for my PV and wind power battery bank.
Anyone knows something more? At least charging current, or so. I got 10 A battery charger, and it seems that they need to be charged 24 hours to be full.