Im going to make a connector like this and use one of my lioo chargers..i see that i have to use pb mode, my question is i guess we cant do a balance charge on these batteries.

I am fairly sure the intelligence for charging the P3 battery is contained in the battery itself, the charger is, I suspect, just a dumb power supply. Therefore I would expect the cell balance is taken care of inside the battery.

Ok great, that's good news...

Is the connector for the p2 the same as p3? I see the charge leads online for p2 but not p3.