Problem is, the suppliers I used don't carry them anymore, they are history for ebikes, mostly you'll find them in larger EVs which this forum doesn't have much of. The cylindrical cells I had were Headways (didn't recall that when writing the previous), I still have a few for 12V applications, they would never go on my ebikes now. They are heavy, large, costly and didn't handle much current, and we had at least one burst into flames here on ES. Serviceability is nice, but better to make sub-packs of 18650's like Justin did rather than accessibility for every cell. Then if a sub-pack gets a bad cell swap it out, and you can service the welded cell sub pack if you want to. But if good cells are matched before connection they generally live or die together. Single cells randomly failing is not the usual problem. what you read about is the exception, no one is writing about the majority of packs that never do anything interesting except work. Ebikes are very sensitive to pack size and weight, the smaller and lighter the better the experience. Many or most of the pack failures you read about are made from low quality cells, don't do that and the reasons for making them readily serviceable are vastly reduced. Time and again I see folks building packs from sketchy cells, trying to save a buck and getting burned.
It is your choice how to proceed, but the ebike market has moved on from the product type you are trying to use. It was popular 10 years ago.
