RE: (ET) batteries and charging

["Chapin, Tim" <tchapin umich edu>]

I have purchased, but not installed yet, 36 volt head lights and dash
lights.  They are available at fork truck parts places.  I don't have the
bulbs with me at work but can look them up if interested.   Then all you do
is tap off the pack at 36 volts instead of 12.   Because I have an e12m (no
front lift), the 36 volt bulbs will solve my balance problems.

Someone in the last week or so talked about a 12/24 volt electric wench
replacement.   What would happen if you just jumped the volts to 36 on 
that.
It should move real fast.  Any worries on burning it up?

-----Original Message-----
From: elec-trak-bounces cosmos phy tufts edu
[mailto:elec-trak-bounces cosmos phy tufts edu] On Behalf Of David Roden
(Akron OH USA)
Sent: Thursday, February 12, 2004 10:31 AM
To: elec-trak cosmos phy tufts edu
Subject: Re: (ET) batteries and charging

On 12 Feb 2004 at 7:08, jim donovan wrote:

>  it is my
> understanding that the charger that is on the
> elec-traks has an output that best serves the flooded
> batteries.  Is that correct?  

"Best serves" doesn't quite say it.  The GE charger will murder your
expensive 
VRR batteries in a few months.


> What do you sealed/gel
> type guys use to charge your pack?

I use three 12 volt automatic (cycle-dropping type) chargers.  If I had 6
volt 
modules instead of 12 volt, I might go to six 6-volt chargers.  

You really need to charge at the module level unless you get rid of the 
battery taps for the lift and lights.  The taps unbalance the pack 
something

awful.  The GE charger deals with that by overcharging between one and 
four 
other batteries, in order to make sure the lift and/or light batteries have
a 
full charge.  VRR batteries just can't take that amount of overcharge.
(It's 
not really good for flooded batteries either, but they're sturdier in this 
regard.)

One of my long-term aims is to replace those battery taps with a DC:DC 
converter.


David Roden - Akron, Ohio, USA
1991 Solectria Force 144vac
1991 Ford Escort Green/EV 128vdc
1970 GE Elec-trak E15 36vdc
1974 Avco New Idea 36vdc
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
    Advertising (n): the science of arresting the human
    intelligence for long enough to get money from it.

                      -- Stephen Leacock
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =




_______________________________________________
Elec-trak mailing list
Elec-trak cosmos phy tufts edu
https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak