Halfords Car Battery Charger - Lost Manual

[elsmandino]

Morning all.

I have an old Mercedes car battery that I am trying to charge and have dug out my old Halfords car charger for the job - it is the dark green one (haven't used it for ages and cannot find the instructions).

There are three LEDs on the thing, and a normal/fast switch and nothing else.

There is a red light with battery +/- sign and saying "OK", an amber light and a green light that says max.

I attached my battery, last night, and all three LEDs stay lit.

I ran it all night and all three are still lit.

This doesn't quite make sense, does it?

I assumed red would always stay lit to show a good connection.

Red and amber should show charging.

Red and green should show fully charged?

[elsmandino]

Thanks for the replies - it is really odd that there is nothing to indicate a model number at all.

Some good advice, there.

I shall have a go at charging it some more, tonight, and see what happens - I shall also check, with a multimeter, whether the voltage is actually going up.

I shall also try charging my current car's battery to see what that does, as far as the LEDs go.

It is a sealed battery and it has been years since I have started the car up - suspect that I have indeed screwed the battery (annoying, as it was an expensive heavy duty one).