Cosmic Meow Backgroundpicked up 1825 li-ion battery packs today. that’s 5475 18650 cells in new old stock 3S1P packs.
that will be a lot of work to repurpose and test the packs/cells. but hey, if it’s free it‘s free.
testing one from the 2023 batch and it’s still over 3V per cell. charging it right now and all seems fine. nice :3
that gives enough time to build a many channels charger jig with monitoring etc.
that gives enough time to build a many channels charger jig with monitoring etc.
opened up another pack. it's complete with full bms, balancer, conformal coating and just really good construction. neat.
qualia@cmb this has me wondering again if anyone makes a low-cost Fluke 500 equivalent. a kelvin probe miliohmmeter is great for a super quick cell state-of-health assessment
i covet the one we have at work but not $5k+ covet. i'd guess it's just doing 10kHz AC impedance testing through its fancy coaxial pogo-pin probes but i'm not certain
@qualia hm yeah, if there’s nothing affordable out there it would be a neat project…
Z̈oé