Not quite sure what to do here. Got lots of options. I haven't been on
EVDL for quite some time.
A local aircraft maintenance closed down here recently and I saw some
flooded-plate Saft nicads come up. Knowing they're famous for
reliability and delivering high currents, I bagged it, sight unseen.
Application unconceived, although I know they're great tech. Bots, EVs,
aircraft customers, well just general energy storage.
Well there was MORE than I realized. Holy ballz there's a lot here.
What it looks like is ~21x 36V 11AH Saft packs, and ~9x 24v 22AH
stainless-boxed batts. I nearly killed myself loading them, and nearly
killed my van's suspension carrying them.
And a bunch of loose cells. I pulled out one of the 36v 11AH packs, saw
it was filled but "low", added some distilled water and put it on a lab
power supply and it charged right up! Well, I put ~9AH in it and it was
still charging when I took it off to go home for the night, and hadn't
gotten warm, it's taking the charge.
I don't know about the entire lot, but that was a good sign!
I'm a bit baffled by the 22AH boxed batts. They don't have visible
levels. I looked up the maintenance PDF, it said something funky about
adding it with a syringe until pulling back on the syringe sucked out
electrolyte because it had filled to the reach of it, which sounds
"kinda crazy".
Now the box loose cells are "dry". I don't know why, they don't appear
to have external damage. The valves are in place and intact. Can they
be restored by adding new electrolyte? What mix would I make there to
try? What happens if they "dried out" and the electrolyte turned to
powder, and thus would end up overconcentrated?
These things ARE old- are there any tricks to dealing with them? They
appear to have been stored ok, caps in place and all.
Danny
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