Re: [EVDL] EVLN: CAD$15k 1988 Jeep conversion
The Ford Focus' on-board 6.6kW charger will recharge its pack to 80+% in
3 hours, and a full charge in ~4 hours from a Level-2 6.6kW J1772
source.
If I understood Cruisin 's point, it was because drivers are dinged by
the hour when getting a charge off a public EVSE that dings a fee,
charging at the maximum rate a Level-2 6.6kW source can provide is more
cost effective than charging at a slower rate off that same source. The
Focus could get in and out in less time, thus be dinging less public
EVSE fee co$t.
{brucedp.150m.com}
-
[quote] Lee Hart wrote:
> Cruisin wrote:
> > The charger is too small for the battery pack in order to save a couple $$.
> > The charger should be sized to provide a full charge in 4 hours or less.
>
> Where do you get this information, Cruisin? I don't know of any normal
> battery that can reach full charge in less than 4 hours!
>
> A "fast charge' for lead-acid is at least 6 hours; 8-16 hours is the
> norm.
>
> Nicads are normally charged at a 0.1C rate, which takes about 10 hours.
>
> Lithiums need to be held at their ending voltage until the current falls
> under a few percent of their amphour capacity. That also takes much
> longer than 4 hours.
>
> You can charge most batteries to within 80% or so of fully charged
> pretty quickly. But that last 20% has to be done much slower!
>
> Also, a charger that can recharge an EV in 4 hours is pretty big! Most
> EVs have packs in the 10-40 KWH range. You're talking about a 2.5-10 KW
> charger, which demands 240vac.
>
> --
> *BE* the change that you wish to see in the world. -- Mahatma Gandhi
> --
> Lee A. Hart http://www.sunrise-ev.com/LeesEVs xxx@xxx.xxx
>
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