Raindrawp :
Hey guys, I just bought a new laptop (Acer Aspire V7) and I was wondering if I use my laptop while I am charging it for an extended period of time, does my battery get worn out? Thanks.
Almost all laptop batteries anymore are of Lithium technology (some say Lithium Ion, but most are Lithium Polymer) which will explode when they're overcharged. Because of this, the batteries have an electrical circuit which prevents them from overcharging. More or less, once they register 100% full, the batteries are cut off from the circuit, and the computer only sporadically monitors their charging. Therefore, using the computer while it's plugged in does not adversely affect the batteries directly.
HOWEVER, laptops can generate a modest amount of heat. And this heat is particularly damaging to LiPo batteries. You're not going to kill your battery in a short period of time - I've had laptops that I've used > 85-90% of the time plugged in where batteries have still been good after 3 or 4 years - but keep in mind that it will likely negatively affect the battery condition over time.
Honestly, though, with as quickly as laptops fall out of date and how often they're replaced, you're likely going to be fine just using it plugged in.