Can a Mac Portable battery be "trickle charged"?

From: Don Maslin <donm_at_cts.com>
Date: Fri Apr 28 00:28:42 2000

On Thu, 27 Apr 2000, Tony Duell wrote:

> >
> >
> > On Thu, 27 Apr 2000 21:26:15 +0100 (BST) Tony Duell
> > <ard_at_p850ug1.demon.co.uk> wrote:
> > > Tell me about it :-). I've never managed to recover a lead-acid battery
> > > that's been discharged and then left -- there's no 'zapping'-type trick
> > > that works. If anyone has any ideas on recovery methods, I'd be
> > > interested to hear them.
> >
> > I have a World-War-II era book called "Accumulator
> > Charging", which goes into some detail on lead-acid
>
> Nice...
>
> FWIW, I have a number of older electrical/electronic books that cover
> repairing accumulators (as in rechargable batteries, not registers :-)).
> A couple of them even cover making them from scratch...
>
> But this is for the traditional 'wet cell'. Not the gell-electrolyte ones
> we're talking about. Doubtless the same principles apply, but the details
> are sure to be different.
>
> And I'm not sure I'd trust myself to be able to reassemble the case so
> that it was properly sealed and didn't leak sulphuric acid all over my
> nice computer...
>
> > batteries. I expect it'll say what to do, but it may also
> > assume that you're willing and able to dismantle the
> > battery, fix it and then reassemble -- in the case of a 12V
> > battery, repeat for all six cells!
>
> Ah, the joys of drilling out the lead connecting bars between the cells
> and running a hot knife round the sealant so as to free the top of the
> casing and the plates/separators...

And the real fun comes in the rebuild when you do the 'lead burning' to
put it all back together electrically!

                                                 - don
 
> >
> > I'll dig out the book and take a look -- I won't be able to
> > supply an ISBN, though, because it's too old for that sort
> > of thing!
>
> Camdens must sell at least one book on this...
>
> And you, coming from the west of England must know Camdens...
>
> -tony
>
>
Received on Fri Apr 28 2000 - 00:28:42 BST