Re: RE: (ET) different wiring

["Bob Murcek" <RMURCEK geisinger edu>]

This'll sound lame, but has anyone tried using differently-sized batteries 
to make up for the uneven load?  I.e., hugh ones for batts that provide 
12V, a medium-sized one for the batt that's needed for 18V, and 
regular-sized ones for the rest?  This would force the use of separate 
chargers, though.  Or isn't it worth the effort?..Bob

>>> "Elie, Larry (L.D.)" <lelie ford com> 10/31/2001 12:03:40 PM >>>
No, unless you break the series connection before you make this parallel 
connection.  If you are willing to add 2 high-current switches to break 
the series connection, and another 3 to make your parallel connections.  
The switches are expensive.  It could be done, but if you failed to break 
even one connection, you will blow up a battery.  I'm sorry, but this 
really isn't all that easy.  Bill Gunn suggests just tapping off 12V and 
charging a bit longer to make up for the imbalance.  I designed a 
self-equalizer based on parallel integrators that I might be able to post 
after it is published (the patent will not be filed because the company 
choose a more expensive charge equalizer).  This is an old problem.

Larry Elie

-----Original Message-----
From: Jeremy Gagliardi com [mailto:Jeremy Gagliardi com] 
Sent: Wednesday, October 31, 2001 11:30 AM
To: Elec-Trak
Subject: (ET) different wiring


Instead of a DC-DC Converter, how about this?...

Hooking up the 12V components to the 3 pairs of batteries in parrallel,
like this:
12V+ to Batt1+ & Batt3+ & Batt5+
12V- to Batt2- & Batt4- & Batt6-

The 18V accessories would look like this:
18V+ to Batt1+ & Batt4+
18V- to Batt3- & Batt6-

Would that work?

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