John_H wrote:
>
> John McKenzie wrote:
> >
> >The ones I get (lead acid) last 10 years on average, sometimes more. I
> >dunno what the hell is different about them (but I must indicate they
> >aren't made in chinese love factories, they are made by a local bloke -
> >Moon Batteries - bloody competitive pricing (well not compared to the
> >**** ones, but compared to anything of similar quality) too.
>
> I'm also guessing that you own a lot more woollie jumpers and
> longjohns than I do (or are much hairier). :)
I've been on the snowfields in the middle of winter in a t-****rt - it's
more a protective lipid ****eld.
> Temperature is probably the biggest single factor that determines
> battery life, all other conditions being equal. I've never had 10
> years out of one, even in 24 volt systems which typically last around
> 30% longer than 12 volt (due to the reduced maximum load current
> draw).
That might be something to do with it - I have the largest size battery
you can fit in the engine bay (and it required mods to the battery tray)
- due to some of the shenanighans I get up to, having extra reserve
capacity is a big deal.
> Back in the days of my impoverished youth, we used to perodically
> drain our motorcycle batteries and hose 'em out to get rid of the crud
> that collects in the bottom (and eventually shorts the cells).
> Because I worked in a laboratory at the time mine got refilled with AR
> grade sulphuric (analytical reagent).
I never thought of that, but it makes perfect sense. Would it make any
difference as to whether it was fully charged before this process or
fully drained? I'm thinking yes, but it's harly my forte (which is true
whether I'm referring to batteries or thinking)
> I do have a mate who once dealt in batteries (and tyres) on a large
> scale (he had his own battery brandname at the time). His advice on
> choosing the best lead acid battery was to take your scales when you
> went shopping and buy the heaviest one for the money. I've never
> tested his advice, but I'd suspect it's reasonably sound. :)
I suppose looking at it conversely - I'd be worried about what set of
factors lead to the lightest one being the lightest one, so it would
make some sense.
--
John McKenzie
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