Originally Posted by
billdelong
My take on this article is that it only discusses matched cells in a single pack, they explain how the cells are carefully grouped together when they are matched. It would be a bad assumption that 2 packs from the same manufacturer are matched, in fact you would have to be extremely lucky to get 2 matched packs at random...
If you read my technical explanation above, you would realise that 10% or perhaps even up to 20% mismatch in capacity doesn't have to be a problem, just means that you adjust your LVC accordingly.
I would be very surprised if I bought a pack advertised as 5000mAh and it was in fact 4000mAh (-20%) or 6000mAh (+20%). All the batteries I have are no more than about 200mAh (<5%) off from what they were advertised as, and they aren't ultra expensive packs. Between cells in the same pack I am seeing anything between 0 and 5% mismatch.