Skeleton Technologies 51V Capacitor 177F with 4mOhm ESR Rugged industrial digikey item: 2969-SKELMOD51V-ND Purchased & used very briefly 4 years ago for reverse polarity tested on SiC inverter (400V) with 8 in parallel. Sat indoor storage since and gifted during clear out. 10 year manufacturer claimed lifespan, million cycles 2 pictured for sale on current listing. 6 available, all identical working condition, but not quantifiably tested minor travel dings to aluminium plates but nothing serious. contact me to buy them all. Makes for an excellent power reserve for resistive spot welding on batteries, and many other things I'm sure.
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