Easy peasy.

내 문제

My battery was at less than half its original max. I couldn't work on an unplugged computer for more than an hour.

나의 수리

Smooth at silk. Remove screws, pop the cover, unplug old battery, plug in the new, voilà.

내 조언

The computer's clock will most likely reset once you put he new battery in, but that's about the only thing I found I had to fix post-installation.

Oh, and it was a tad dusty inside, so some canned air might be good.