Sorry but that is just not true, it is not good to run them down all the time. The more you use the battery the sooner it will reach the end of its life. The average lithium polymer battery has a lifespan of approx. 1000 full charges before you notice a large degredation in run time.
Wear to your charger? I work in the the tech department for a large business. Out of the thousands of laptops and tablet PC's we have, I've had maybe two chargers go bad. And a $20 - $30 dollar charger is certainly cheaper than a $60 - $100 dollar battery.
We have clinicians that use HP tablet PC's and they abuse the crap out of these things and I've only had to send a few in because of issues with the power jack on the tablet. This is out of approx 700 tablets we have.
message edited by THX 1138