To fully cycle the packs and therefore recover as much capacity as possible, I am exploring two possibilities. the first is a charger controlled load for the full pack. A 250VDC power mosfet with an optically controlled gate is the HV switch, and the present configuration of the dis-charger is a series parallel configuration of six 100W tungsten bulbs.
This is about 2 amps at 144v. The charger automatically charges to the plateau, then turns the charge off, and runs a timed discharge to a setable minimum voltage. If the discharge rate of change accelerates due to a cell drop out, the discharge will stop, and the charge starts again. The charge MAH will hopefully measure the improvement in pack capacity as the pack gets into balance, and the cells with memory effect get exercised to increase their useable capacity. The second will be a diagnostic discharger which will discharge all sticks separately at the same time and compare capacity, as well as fully discharging all sticks without danger of cell reversal.
whole pack discharger