I've got a Quest Q2 charger right now, which is a piece of junk, because when
I put my batteries in there, it will often say they're fully charged after 10
or 20 minutes, when in fact they are far from fully charged.  I have to take
the batteries out and then put them back in, let them charge another 10 or 20
minutes before the charger once again incorrectly says that they are fully
charged, and repeat...

Anyways, I want a new charger and I've always seen positive comments about
Maha chargers.  I'd like one that has 4 independent charging circuits, so I
guess that means I have to get the C401FS.  The one thing that the C401FS
lacks that other Maha chargers have is the conditioning feature.  The
description says it doesn't need the conditioning feature because it uses some
"flex negative pulse" charging algorithm.  

Well I have 2 sets of batteries that are dead.  When I put them into my Quest
charger, it immediately tells me that the batteries are defective.  I don't
use my digicam too often, so my batteries quite often sit for several months
without ever being used.  I don't know if this inactivity has caused those 2
sets to die.  But I've read that the conditioning feature of chargers can
revive some dead batteries, so I'm wondering if I can revive my 2 dead sets.
But the C401FS doesn't have the conditioning, so I wonder if it can still
revive my dead batteries using its "flex negative pulse" algorithm?

Another thing is that Maha recently released the C204W charger, which goes
back to using conditioning instead of the "flex negative pulse".  So maybe the
"flex negative pulse" turned out to be worse than conditioning?