Battery trickle and float charger.

It's not a float, it's a trickle. Voltage is higher than I'd want, and there's no termperature compensation.

Not a bad PSU to add your own reg though...

You can't beat an old-fashioned linear constant voltage battery charger, a specific gravity measure, and a bit of tehnical know-how for rejuvenating car Lead Acid batteries.

I've had an old battery which was totally flat on and off charge for about 3 months now, topping up with water/acid where necessary, leaving it to equalise and vent. It's nearly back to working condition.

Alex

Here's an OCR of the appropriate page from the manual:-

DESCRIPTION OF OPERATION This automatic compact charger will charge all 2V, 6V and l2V lead acid storage batteries automatically. Once the battery on charge reaches the final charging voltage, the charging current is reduced thus protecting the battery from becoming overcharged.

Thanks to fully electronic voltage and current limiting, the battery on charge is always kept at an optimal level of charge, which at the same time prevents dangerous over- charging and the associated formation of explosive gas. A safety circuit ensures that no voltage is present on the terminal clips until a battery has been connected to the charger.

The charger is distinguished by the following characteristics:

- short circuit protection and protection against connecting the wrong way round

- constant final charging voltage

- charging will not take place if the battery is connectedthe wrong way round

- charging will only take place if the battery is correctly connected

- optical indication of charging process and incorrect connection