With 500 posts, just add yours if you don't agree.
2. As to the battery, this is simpler than you think. TODAY'S LAPTOPS have stellar battery management. In our laptop forum we went over this and after much discussion, links, and boiling found that you can expect your battery to last 10% longer if you left it out of the laptop.
Yes, that's an extra 2.4 months (or 1.8 depending on how you define battery life.)
Very few will write it's worth removing.