Are there any topics here that discuss the Toyota Prius in particular? Now I have my 2008 Brisbane taxi Prius registered it's time to start fiddling with it

It now has 710,000km on the original engine and drive train, the left hand drive shaft is up for replacement, apparently the battery was replaced with a second hand one from a wreck back in 2006 at around 600,000kms and at the moment it seems to be working fine.
Questions:
Does anyone know the voltage range of the battery pack?
Has anyone tried linking LYP cells directly to the Prius cells to extend the capacity/range?
What criteria determines when the ICE motor is engaged and can this be altered at all?
T1 Terry