Batterie Trouble

[axess]

I just bought a '96 MX-3 4cyl. with 40 000km on it. It's been running great first few weeks, but now the charge battery led come's on flickering once in a while. Most of the time it's when i have my lights on and I'm idle at a light, but I noticed yesterday that it even happens while driving at around 2500rpm.<P>I went to get a load test (if thats the right term...) on it and the results where that everything is fine, the battery is still good and the alternator is working fine also.<P>I think it might be the idle (it's at around 500-600rpm wich I think is low), but then again it happens while driving...<P>Any toughts ?<P>Also, while I'm here, my Precidia has everything stock, what would be a good start to get some mods in that would fit a tight budget ?<P>Thanks alot guys!