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Nah people buy them expecting them to be at half capacity or whatever. There are a lot of used battery places online now that test them for capacity and then list them at whats available and people will buy them for diy projects. Sometimes people know how to open the packs and replace the bad cells individually and rebalance them (especially with the rectangular lithium cells). A lot of people just buy on $/kWh, power density, safety, and c rating.
If you can you can, charge them up and measure discharged energy from them or just list them on ebay as is.
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"I feel like the bad decisions come into play when you trade too much of your time for money paying for things you can't really afford."
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