Re: (ET) Dan's 2/10A charger

["Dave & Deb" <daveb drizzle com>]

ah more mysticism cleared up!  :^)  thanks much!

yes I'm charging 3 pairs of 6v and don't have a lift motor...yet. so 
that's not
contributing to imbalance...

> On 2 Nov 2006 at 12:10, Dave & Deb wrote:
>
>> I was thinking I needed to do that with etrak as well and this
>> charger wouldn't allow it... but maybe it's built into the algorithm??
>
> Doesn't look like it is.
>
> A charger with an IUIa or IUIUo curve MAY perform equalization on every
> cycle, depending on how long the last constant current phase lasts and 
> what
> the current limit is.  But this one is IUUo (not IUIo as I said before;
> sorry) with the last phase being constant voltage float instead of 
> constant
> current equalization.
>
> This may not matter as much if you're using the 3 banks to charge 12v 
> pairs,
> as long as you have your lift tap at either 12 or 24 volts, not 18 volts.
> However, you can still have cell imbalance within a given battery, so
> periodic equalization remains a good idea.  You could probably do that 
> maybe
> every month or two, using a cheap manual automotive charger and keeping 
> an
> eye on things.
>
> BTW, to explain the alphabet soup :
>
> I = constant current phase
> U = constant voltage phase
> a = stop this phase and shut off when desired state is achieved*
> o = continue this phase indefinitely
>
> *Typically full charge defined as "current below x amps" or "voltage 
> above y
> volts"
>
>
> David Roden - Akron, Ohio, USA
> EV List Assistant Administrator
>
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