Hi All,

I've been aiming to buy a new car battery trickle charger for a while
- I've noticed that there are some very small trickle chargers that
are 500mA output and looks like a plug in power block.

Then I found I had an old adaptor from a defunct jump start unit - the
jump start was a yellow Rolson model for jump starting 12v car
batteries - but the charger that came with it is, strangely enough,
labelled 15v 500mA.

A subsequent jump starter (same yellow model, different branding) had
a charger that was labelled 12v. Both these jump starters have gone
west and I no longer have them.

Therefore could I use this little 15v/500mA charger as a trickle
charger for my car battery, like the block trickle charges I've seen?
If so I think all I would need is a couple of large crocodile clips to
put on the lead - but for charging purposes which goes on the red
positive battery terminal ?

I have a feeling that the charger's negative goes on the battery's
positive terminal and the charger's positive goes on the battery's
negative terminal. Is this right?

Thanks, Tom