Well, mine admittedly are used primarily for duty so I suppose mine live a rather cushy life - particularly my batteries. However, I don't think I know how dec

Well, mine admittedly are used primarily for duty so I suppose mine live a rather cushy life - particularly my batteries. However, I don't think I know how decreased battery life would lead to overheating? Certainly, dust inside the machine will lead to overheating (or at least, more fan activity) over time. Coats the heat sinks, etc. Perhaps that's it?