> Lots of the chargers I've looked at for automotive applications seem 
 > to use an SCR with a zener diode and a few other components 
 > associated with it,  but I have yet to generalize on that 
 > arrangement to the point where I can get what I want out of it.  
 > Seems to taper off depending on the voltage of the battery, near as 
 > I can tell.
Most batteries are happiest with a tapering charge from what I've read.
 > At this point I've got an assortment of small nicads plus a couple 
 > of group 27 deep cycle wet batteries,  and about eight 33 AH gels 
 > and four 10 AH gels on hand to deal with.  This is only going to get 
 > worse!  
My old home-made charger works great. It's only capable of about 6 amps 
continuous, has a Variac on the primary so I can set whatever I want, along 
with a timer to shut it off. It'd be nice to have a bit more capacity, but 
it's not bad.
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