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RE: (ET) Fw: [WT] Trickle Chargers
- Subject: RE: (ET) Fw: [WT] Trickle Chargers
- From: "Elie, Larry (L.D.)" <lelie ford com>
- Date: Thu, 24 May 2001 10:13:54 -0400
- Hop-count: 1
- Sender: owner-elec-trak cosmos phy tufts edu
I trickle either pairs on 12 V setting, or singles on 6 V. My trickle
charger is a 15 Amp. I typically use it for the first hour or two, and
let the ET charger brute force it up from there. I also have a charge
equalizer I designed and built (I would share the schematic but the patent
isn't filed yet) based on using op-amps to share charge, batteries can be
thought of as non-linear integrators. The op-amps share charge between
batteries, but I can't dump enough current to do all I want. Anyway, it
is a problem.
Larry Elie
-----Original Message-----
From: David Roden (Akron OH USA) [mailto:roden ald net]
Sent: Wednesday, May 23, 2001 12:59 AM
To: Elie, Larry (L.D.)
Cc: elec-trak cosmos phy tufts edu
Subject: RE: (ET) Fw: [WT] Trickle Chargers
On 22 May 2001, at 10:19, Elie, Larry (L.D.) wrote:
> Three of the batteries do the back
> lift and they have to lift almost 300# of tiller at each end of the
> field.
> Up/down perhaps 30 times in an hour.
This has been bothering me for a while -- this inequitable distribution
of load because of taps for front lift, rear lift, and lights. I use 12v
chargers on 12v batteries, so they are more evenly charged, but the ET
charger equalizes them by brute force.
I think the ET could benefit from a DC to DC converter, delivering 12-15
volts for the accessories from the 36 volt pack.
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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