On Sun, 02 Dec 2012 14:14:02 -0000, Baz wrote:

RG wrote in newsp.wom4wac0gkcl5l@home1:

On Fri, 30 Nov 2012 21:26:01 -0000, jim dixon
wrote:


I bought a hedge trimmer and a cutter both battery operated. Didnt
use (medical reason) for 2 years. Now cant get batteries to take a
charge. Have checked charger and engines, all okay. Is this normal?
Any solution?

As others have said, after two years it's likely that they will have
failed, particularly if they are lead acid.

However it would do no harm to leave them on charge for a day or two
and see if they can at least partly recover, before laying out your
money on a new set. Just check the charger from time to time to check
that it's not getting too hot, which it might possibly do if the
battery has gone short-circuit. That's unlikely though - they are
more likely to have gone high-resistance and not accept a charge.


That is some very, very bad advice.
Don't do that.


smiles
Please explain why it's very bad to attempt charging a sulphated lead acid
battery, Baz.
I'm interested to learn.
Don't hesitate to use specific technical terms - I am qualified to
understand.