An HP Pavilion laptop AC adapter has 4 important components. You should understand these things first before buying the charger. This will help you to choose correct adapter.
1. Voltage is energy per unit of charge. Choose correct voltage for your laptop. Most HP laptops have 18.5v or 19v. A 19 volts charger can be used on laptop that needs 18.5v. If possible try to get a charger that is exactly if possible.
2. Amps are another thing to consider on laptop ac adapters. Amount of current is measured in Amperes also called Amps or A. Most Hewlett Packard notebooks require 2.7A - 6A. Majority of them with 3.5 to 4.9A.
































