Nikon D60 battery doesn't charge anymore?

My battery doesn't charge anymore. The charger light blinks as usual but it never stops blinking (charged mode) and even after 8 hours the battery is not charged. I checked and cleaned the terminals with no effect. Is the problem with the battery or the charger? I need to understand it before replacing one of the two if necessary. BTW the batter was running strong until yesterday and I had the camera bought in 2009.

Buy a new battery. They don't last forever, you know

You might need a new one.

2009? And you're asking why the battery won't work any longer. Come on… Car batteries only run a couple of years so why would you expect a camera battery to be any different.

Just buy a couple of new ones.

It is probably the battery rather than the charger. Do yourself a favor and only buy a genuine replacement as the 3rd party batteries may be more trouble than worth.

Batteries wear out…