I thought the current advice is to leave the battery in while connected to a wall socket? it was discussed in the previous page. It was said that the battery helps to prevent fluctuations in voltage which could "fry" the mother board especially when there is a power surge.

I would think the safer option is to have the battery in while the Mac is in operation.

Case closed. End of the day, leave the battery where it is supposed to be and enjoy your Mac. The article from Apple is the most reliable fact/ evidence there is. Cheers!

Ikan semilang, where did you get that desktop picture? Nice...