Hi Jim,

Thanks very much. The ABC-150 unit mentioned in the article is exactly
what we want (although it is way overkill). I had actually heard about
that before but I was unable to find it on AeroVironment's site, so
I'm afraid that they may not still make it. I have sent them an email
inquiry and we'll see what comes of it.

Sean


On 7/26/07, PAUL James <James.Paul@colibrys.com> wrote:
>
> Sean,
>
> Check out this link.  It may or may not be what you need, but even if it
> isn't, it may lead you to what you need.
> http://205.168.79.26/vehiclesandfuels/energystorage/pdfs/pesaran2.pdf
> Have fun.
>
>
>
> Regards,
>
>
> Jim
>
> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf
> Of Sean Breheny
> Sent: Thursday, July 26, 2007 3:16 PM
> To: piclist@mit.edu
> Subject: [EE] Battery Cycler
>
> Hi all,
>
> At my company we work routinely with 48V 28Ah and 50Ah deep-cycle sealed
> lead-acid battery packs. We want a method for accurately determining the
> actual capacity of such packs. Ideally, I want to find a device which
> will automatically "cycle" such packs (by this I mean fully charge and
> then fully discharge, integrating up the amount of useful capacity which
> was drained during discharge and reporting it).
>
> I've found battery cyclers like this for RC hobby applications, but they
> don't seem to go much over 24V and they are typically limited to about
> 50W dissipation during discharge. I'd want something which could go to
> around 70V on charge (necessary to really top off and equalize a 48V
> pack) and could handle up to 10A on discharge (500W).
>
> I'm willing to spend quite a bit of money on this but I can't seem to
> even find such a thing for sale. Does anyone know of one?
>
> Thanks,
>
> Sean
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