Balancing question - how long?

[Gazoo]

Can I ask why join the leads togather and setting the voltage?
I did mind not so long ago with a similar Power supply ,
I couldn't get the reason why to connect the leads ,
I just connected a meter to the leads , turn the current up a little and set the voltage to read 3.65 at the meter , then connected the leads to the batteries and turned the current up as far as it would go , in my case 5.2A
So why do people connect the leads togather? What different does it make?

It makes very little difference if any for this application. The reason is the IR of the cell is so low the power supply sees the current the same way as if shorting the leads of the power supply. The most important part is to always set the voltage before connecting the power supply to the cells. Then connect the power supply to the cells and adjust the current.