We have a couple of Dell C610 laptops in the house,
and have the PA-6 (60watt) AC chargers/power supply.
One laptop has 2 batteries, and the other laptop just has 1 -
All batteries are the newer 14.8v x 4460mah....(65watts)

Was wondering if getting the 90watt PA-9 charger/supply
would effect :
- charging time for the 2x battery laptop ?
- charger run cooler while charging or running the laptop on AC ?

If not - then was the PA-9 for certain laptops that draw more than
60watts ?