On 11 Jul 2009, at 09:20, Tony Brooks wrote:
> Are you prompting me?
>
Thanks Tony - I thought either you or Richard Edwards would have
something useful to say.
> <snip a lot of good sense>
This pretty well confirms what I thought. I'm especially suspicious
of a "technical section" which doesn't quote reputable sources.
>
> If you are worried about minimising sulphation you either need a
> shoreline & multi-stage battery charger or a decent sized solar
> array and/or a wind turbine.
Indeed, and much as you said earlier in the same edition. This is of
course the problem for folk like us, with rare access to a shoreline,
and subjecting the batteries to a charge/discharge cycle every day,
seldom getting near a full charge.
The guys who supplied the batteries to Felonious Mongoose (name's
escaped me for the moment) reckoned that to avoid sulphation, a lead
acid battery needs regularly to undergo a charge at 2.4 V per cell
(ie 14.4 V for a nominal 12 V battery) for four hours continuously
to reduce sulphation to a minimum.
It's for this reason that Sanity Again will have bog standard open
cell lead acid batteries rather than traction cells - without the
potent charging system of the hybrid drive, there's no way we could
keep the cells adequately charged, and so they will sulphate
regardless, and we may as well reconcile ourselves to a regular
replacement regime.
All the best
Bruce
Go steady, but keep going.
[Non-text portions of this message have been removed]
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