Re: Will Sanyo 330 volt batteries work?
Two packs of cylindrical NiMh D cells would need to be two packs, ideally separately charged due to the way that the voltage drops when they are fully charged(one reach a full charge but the other won't get the higher voltage it needs). Then put in parallel via a contactor connection.
Each pack of 250 cells is 300 volt nominal(1.2v per cell) fully charged is higher than that and they need a CC charge. 5.5Ah is what Sanyo rates them at and they sag pretty bad at EV amperages(only really good for short term 100amps at the most for a very short period. The Panasonic NiMhs are 30 amps if you have enough air cooling and its designed properly, they get HOT quickly if you don't cool them actively.
A 11Ah(two in parallel) pack would be 3300wh. Not big enough to do much with and they are relatively large and heavy in comparison to lithium. Keep in mind that since they aren't new you probably won't get 5.5Ah and with 25 sticks you'll have to cycle them all and remove the low capacity ones, the high self-discharge ones, the high IR cells, and any other ones that behave in any different way than the rest. IMHO lots of work for not much energy or power.
FWIW, I have bad Honda sticks(Panasonic 6.5Ah cells) that sag like rocks under 30 amp loads, but are good enough in an electric lawn mower designed for AC that has a universal motor because they seem good enough for 12-15 amps discharge long enough to clear my yard.
I wouldn't put hybrid NiMh back in a car for any other purpose than in a hybrid where that specific hybrid can manage the battery the way that NiMh needs to be handled to operate efficiently and for a decent lifetime, and am really kind of done messing with cylindrical NiMh cells.
Again more IMHO, lithium is where it's at.