Tim Lamb wrote

Newish car battery employed to power pony field electric fence.
Likely to have been left connected well beyond the fully discharged
state and possibly exposed to overnight frost.

Won't take a charge! Yes, I know, throw it away. However, horse person
has gone off with my sound spare. Is *over* discharging an issue?

Not that so much as sitting around flat. They don't like that at all.
\
She's dead, Tim. You into necrophilia ?

or...?