I have a Sony personal computer Model PCG-7141L. and it says DC 19.5V on the back, but on the bad battery it says 11.1V (I'm not sure if its AC or DC)4,400mAh would the voltage difference matter when I buy a new battery?
1 Answer
Charging a battery takes a higher voltage than the battery output. A laptop input voltage of 19.5V isn't unusual for a battery voltage in the neighborhood of 11V.
Go by the battery model number to buy a replacement (it will be on the battery, and usually in the laptop specs).