Re: (ET) charge voltage

[Michael S Briggs <msbriggs alberti unh edu>]

Ok, so survey says "replace the capacitor". Looking through the archives 
on the capacitance of the capacitor, there seems to be some disagreement 
on what the capacitance is. I've seen posts saying 4 microFarads (uF), and 
some saying 10 uF.
	It's presumably not an electrolytic cap, so I'm wondering if I can 
just use any old non-electrolytic high voltage cap (of either 4 or 10 uF, 
whichever it's supposed to be)? We have gobs of capacitors here at work. I 
even have a couple 22 F (yes, 22 Farad) carbon aerogel ultracapacitors. :)

Thanks,
Mike

On Wed, 26 Jul 2006, Neil Dennis wrote:

> Seems like we've been there before.  To reach full charge at "room
> temp", like in the low 79's F, the individual cells need to be pushed to
> aprox. 2.7 volts each so about 48 volts measured at the battery
> terminals when fully charged.  A bit less isn't too bad but not as low
> as 40 or so volts.  As a reference, an alternator charging a car battery
> is designed to run at 14.4 to 14.6 volts or about 2.4 volts per cell,
> this is to compensate for the engine compartment temperature - the
> higher temp wants a somewhat lower voltage.  So, yeah, on mine the
> "power" gage needle goes to the upper part of the white zone.  I don't
> use the et charger, have a portable "automatic" instead.
>
> wombat
>
> If you are seeing 40 volts, probably the capacitor is bad.
>
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