Very easy! Just buy the right tools.

My Problem

My battery lasted about 15 minutes and was causing problems.

My Fix

Easy. Very easy. No idea why it was listed as Moderate. Just pay attention to the battery connector as they warn.

My Advice

Get an old mouse pad with a soft nonskid back, turn it over and place your screws on it in the shape they came out. Makes it real easy to get them back in the right place.