I don't break in my packs. I just charge em and run 'em.
Just keep the packs balanced and try to avoid hitting the LVC when possible. I have found hitting LVC a lot seems to hurt the longevity of the pack, particularly if you are going with the cheapo zippy packs. They really start getting out of balance and a bad cell if you drain them down to the LVC.
If you just run your packs to about 80% discharged and keep them balanced, they should last you a long time with weekly use, especially enerland cell based packs.
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