Re: Stopping corrosion (Was Re: (ET) best tires for hilly grass)

["David Roden (Akron OH USA)" <roden ald net>]

On 30 May 2001, at 22:28, Jim Coate wrote:

> These are *not* the more common "gel-cell" sealed
> batteries, but rather Absorbed Glass Mat, such as Concorde's, Hawker's,
> and the spiral-wound Optima's. 

These are fine but expensive.  In on-road EVs, some people put up with 
the increased operating costs (about 3.5 times as much per km of actual 
use compared to flooded golf car batteries) in return for the lack of 
acid cleaning hassles and positioning flexibility.

AGMs are the way to go for high-current on-road EVs, but you need not be 
afraid of good quality gel batteries in this application.  I use 6 group 
24 Deka Dominators in series-parallel in my ET and they work great.  

I charge them with 3 individual 12 volt chargers, which is essential in 
an ET which still uses battery taps for the lights and lifts.  You could 
go to a single (properly designed) 36v charger by powering the lights and 
lifts from a DC:DC converter.


David Roden - Akron, Ohio, USA
1991 Solectria Force 144vac
1991 Ford Escort Green/EV 128vdc
1979 General Engines ElectroPed 24vdc
1974 Honda Civic EV 96vdc
1970 GE Elec-trak E15 36vdc
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