> So how does the issue of sulfate ions migrating through the circuitry
> get handled?
by not existing.
> -----Original Message-----
> From: Brice Yokem [mailto:[log in to unmask]]
> Sent: Monday, October 06, 2008 11:35 AM
> To: HP3000 List; Tracy Pierce
> Subject: Re: battery life...
>
> On Fri, 3 Oct 2008 14:16:06 -0700, Tracy Pierce
> <[log in to unmask]> wrote:
>
> >they're both. computer room UPS batteries are often "motorcycle-size", and
> are most always deep-cycle.
> >
> >vastly most deep-cycle, marine, and starting batteries (with "marine" taking
> a middle ground) use the same (cheap) lead-acid chemistry; the differences
> among them lie entirely in the physical configuration of the lead. (spongy =
> lots of surface area, fast discharge, good for starting; solid = lots of lead =
> lots of storage but not quite so quickly available ...google)
> >
> >so...No.
>
> So how does the issue of sulfate ions migrating through the circuitry
> get handled?
>
> >> -----Original Message-----
> >> From: HP-3000 Systems Discussion [mailto:[log in to unmask]] On
> Behalf Of Brice
> >> Yokem
> >> Sent: Friday, October 03, 2008 12:29 PM
> >> To: [log in to unmask]
> >> Subject: Re: battery life...
> >>
> >> On Fri, 3 Oct 2008 11:43:44 -0700, Craig Lalley <[log in to unmask]>
> >> wrote:
> >>
> >> >--- On Fri, 10/3/08, Dave Vorgang <[log in to unmask]>
> >> wrote:
> >> >
> >> >
> >> >> Craig, you mentioned that replacing the batteries are a
> >> >> PITA. What is the difficult part?
> >> >>
> >>
> >********************************************************
> >> >
> >> >Depending on your version of PowerTrust, there can be up to
> >> 20 "motorcycle" batteries. Each weighs about 20lbs.
> >>
> >> I am only guessing, but I bet these are not 'motorcycle' batteries, but
> >> 'deep cycle' batteries. If they are the standard lead-acid type batteries
> >> at all. Do you need a special type of battery for this purpose?
> >>
> >> >You need to manually unscrew the connectors, (they are small), pull the
> >> wires and washers off, and replace them in order.
> >> >
> >> >I payed an electrician to do it, it took him (and he was fast) about 3
> hours
> >> to do.
> >> >
> >> >-Craig
> >> >
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> >>
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> >
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>
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