Depending on how the weather is and how hot your charger is charging them to, you want your delta peak .4-.5 mv per cell. Since you are using delta peak, you don't need your capacity set that low, since it will stop before the delta peak. Most IB4200 will take much more than that at peak. I have a pack that peaks close to 5000. 3800s will obviously take less. Remember too, you are charging from trayed/equalized packs, so there is a small amount of charge in them at start. Most people agree that when starting a charge, deadshorting for IB cells isn't as good. Ib cells are great; higher voltage, less IR, but like any cell needs to be treated properly. If stored without use over a few days, store them with about a half charge. They don't like to be stored with no charge over time.
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