Yes, we were told by a sales agent at one stage that (their) Telecom
AGM batteries were "self limiting". I can't remember the manufacturer
but it would have been one of the known brands at that stage. Only
later did we start using cheaper suppliers.  But we put limits on it
anyway. The gel cell types however tend to have a specific warning
about max charge current.

I did have a case were I was doing battery testing and I got thermal
runaway with AGM batteries, but they were a high capacity UPS type.
Very thin plates etc. That got quite exciting for a while ! I managed
to get the battery temperature up to close to boiling point. They were
never the same again.  So there is a limit on some types, especially
if the temperature isn't monitored adequately.

RP

On 17 March 2010 04:53, John Gardner <goflo3@gmail.com> wrote:
> Some AGM manufacturers (Optima, for instance) don't
> specify a max charge current.
>
> Here's a guy who thinks they can tolerate extremely high
> charge currents...
>
> http://www.wheelchairdriver.com/inverters-chargers.htm
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