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WHOA! Is that from a battery's full discharge? What about when the BP's depletion in the 67 triggers the low battery dot on the 67? Surely not 22 hours for that recharge cycle?
I would have stated that the new pack is approximately 3x the capacity of the old pack, therefore the new pack will take approximately 3x the time to charge. ISTR the old pack was spec'd at 10 to 14 hours for a full charge, therefore the new pack will take 3x10 to 3x14 or 30 to 42 hours.
22 hours is probably a good refresher charge when the pack is not empty.
You can tell when the pack is full if all the cells are elevated in temperature. The '67 is such a slow charger that the only time the cells will heat is when the cell is full. So if all the cells are heating, all the cells are full.
It is good to charge the pack to "every cell is full", otherwise the weaker cell (that was more empty) gets less charge and will be even more empty next time. Eventually the weaker cell will be damaged, and it could happen the next time you discharge it if the weak cell reaches 0v and the other cells keep the system operating. Then the weaker cell will experience reverse current flow, and that kills it.
I rebuilt my own '67 pack and used 1400mAh cells. It takes 3-4 days to fully charge.