Power Pump Cell balancing of two cells at a same time

The PowerPump algorithm doesn't absolutely only pump all cells to the lowest one.  It depends on the distribution of voltages.  Think of it more as pumping to the local minimum.  Higher cells will pump to the lowest cell nearby.  A high cell won't pump through a lower cell to get to the absolute lowest cell.  If a low cell is surrounded by higher cells it will not pump to the lowest cell in the system.

Thank you Jim,

I can understand that power pump can transfer energy to only adjusting cell. And not all cell transfer energy to lowest cell.

But in above example cell 2 has to transfer energy to cell 1. And cell 3 and cell 5 tries to transfer energy to cell 4. I am assuming that configuration is for terminal voltage.

My question is "Does cell 2 and cell 3 transfer energy to cell 1 and cell 4 respectively in single pump cycle (in 4.7 uSec)?"

If BQ78 is able to balance more than two cell at a time, both cell will be balance in approximate one hour (Assuming 70 mAh difference and 70 mAmp average pump current).

In your example, if cell 2 > Cell 3 then Cell 2 would pump to cell 1 and cell 3 would pump to cell 4 in a single pump cycle.

_{Why Cell 2 > cell3 is required ?} 

_{Are Cell 1 < cell 2 and Cell 4 < cell 3 sufficient conditions to pump in same cycle? (cell 2 will pump in cell 1 and cell 3 will pump in cell 4)}

Is there any document available which has overview of power pump algorithm ? (I didn't find online)

If cell 2 is less than cell 3 and cell one is the lowest cell in the string, then both cell 2 and 3 would pump to cell 1.

There are specific details like these written for PowerPump Algorithm.