Hey all,
I've removed my girlfriends flat battery from her Ford KA, connected it up to my car battery charger and there is a little light indicating "reverse polarity" and it refuses to charge. The leads from the charger are definately connected to the correct battery posts. The battery is 2 years old (the same age as the car) and I've never had it out before.
Any ideas what might be wrong? Btw. the charger is pretty new too, it's only been used once before and without any previous problems.
Many thanks, Rob