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Re: (ET) 18 volt source



*nod* Yes, this is probably the best way to go. Technically I can run the tractor with plenty of range by using only the rear battery box filled with 60 NiMH batteries (80ah at any rational discharge rate).

I think I will put a pair of AGM batteries up front in place of the T105's (which are now ballast only) and use that.

For the lights though a small DC-DC converter is only a few bucks; will get one of those.

Chris


jeremy gagliardi com wrote:
One other suggestion I've seen previously is just to add a separate 18V 
battery & charger (charger can be outside the ET) and just run the 18V/12V 
stuff off the dedicated battery, leaving the 36V series for all 36V-native 
applications.  If there isn't much room under the hood for an extra batt, I 
know there's plenty of room in the rear weight box or toolbox.

I'm not advocating or critizing this solution, just that I've seen it 
suggested before.  It's probably the cheapest and simplest solution, being 
just the cost of a battery and charger.  DC-to-DC converters can get quite 
expensive, especially in the high amperage range.

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----- Original Message -----
From: "Chris Zach" <czach computer org>
To: "Elec-trak list" <elec-trak cosmos phy tufts edu>
Subject: (ET) 18 volt source
Date: Wed, 24 Aug 2005 21:04:21 -0400


Ok, I love my Elec-trak's new flooded NiCD pack. I haven't even had to 
water the cells...

However there is a problem in paradise: NiCDs hate to be tapped. And I use 18 volts a lot for things.

So I need a 36 volt to 18 volt converter for the front lift (30amps), rear lift (same) and all my little tools (up to 30a). Any suggestions on what I could use?

I guess I could just go with a Curtiss GC controller wired to 18 volts or something. But I'd prefer another suggestion.

Chris

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