[MetalMan]

Convential balancers don't disconnect the cells that are at a higher voltage. They merely drain current from them to lower the voltage of that cell. The voltage difference cause by this small (120ma) drain is very small, maybe 0.002v (depending on the capacity of the battery). The LBA6 is a convential balancer. The only disconnecting it can do is to disconnect the whole battery when any cell reaches 4.30v when it used between the charger and battery. The way the ICE deals with this is by immediately detecting an open circuit. Other chargers act differently, but usually it isn't a problem.

I haven't heard anything bad about BPP.