Damian wrote

Hi Guys,

Wot abart us animals, boyo ?

I have a regulated power supply that I've built from scratch back when I
was in 'school'.
It's a 0-24V regulated power supply with upto 5 amp.
There are two settings, 1A and 5A. Also the amps can be controlled via a
turn knob(potentiometer).

Presumably you mean the current limit.

Also a separate potentiometer for voltage control.

My aim is to use this unit for 'smart charging' a 12V, 6V lead acid, agm,
etc batteries.

You'd be a lot better off with a decent modern
lead acid battery charger for peanuts from china.

How do I do that with this unit?

You can't with the smart bit. All it can do is the stupid charging.

It's ok for me, to having to walk to the unit every half hour or so, to
adjust the settings to replicate the multi-stage battery charging.

That’s nothing like real smart charging.

I'm after some good information on how to do it.

Get a decent modern lead acid battery
charger for peanuts from china.

Your help is very much appreciated.

We'll see...