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Old 01-30-2019, 07:40 AM   #180 (permalink)
Ecky
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Quote:
Originally Posted by redpoint5 View Post
Yeah, the need for balancing sounds like problems caused by cheap junk caps that aren't spec'd well.
Well we can either rule out AVX caps then, or we'll need to buy more than we need and test them all.

Quote:
Originally Posted by RedDevil View Post
I think half a Volt drop in some weeks isn't too bad actually. Lead acid batteries don't fare much better when stored for long. But they do need some kind of balancing.
The issue with the caps is that if they get out of balance enough to overcharge one, it fails catastrophically, turning into a short. The other cells will then overcharge too and fail in a cascade, and if there isn't a fuse or a breaker you'll have a fire.

I'm coming around to the idea of LTO cells being the easiest/safest option. I really like my capacitors but I can't say I'd recommend caps to someone who isn't prepared for some risk.
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