Short answer: No and no
I was skeptical of this affirmation so I did some research and stumbled with this article. And it brought back vague memories from back when I studied physics about condensers.
Now before we start, I want to point out that to my understanding, saying battery is fully charged makes just as much sense as saying a balloon is fully charged; this limit is too extreme since it's where it's the limit where it explodes. So the battery is never fully charged.
Give this graph I found a look: It's very descriptive.
When connecting the battery to a specific voltage by using your charger, the charge behaves as you can see in the graph over time. It charges the battery quick first and then slower until it reaches a point it will charge so slow we don't consider it charging anymore. This is probably the moment your laptop says battery 100%.
If you charged the battery using a higher voltage, you'd raise this limit, the battery would charge faster and it would have a longer discharge duration at the expense of making the battery "suffer" and hence reduce its life. Too much voltage and KABOOM BABY!
On the other hand, if you use a lower voltage to charge the battery, it would take the same time to charge it to... let's say 50% of last scenario (and it would be limited there), so you'd have less juice through the day but the life of the battery would be prolonged. I bet your laptop would also state the battery is at 100%, even though it now has half the charge as before.
You could also "fast charge" it to that 50% using that higher voltage, but that's going to make the battery "suffer" as well.
Back to the first article, I found there this other graph as well:
So in conclusion, you shouldn't focus on charging your battery less to improve its life, but to charge it slower by reducing the voltage (which will put a limit to how charged it gets hence charging it less).
But on the other hand all new batteries probably have internal mechanisms which regulate all of this so you don't even need to think about it.
Oh, and about programs to limit this; it MUST be supported by acer from the BIOS. If it isn't around, then it's probably just not supported.