Use different HP power adapters in one computer


My old HP adapter burned out and it will take 2 weeks for me to get a new one. In the meantime, I borrowed a HP cable from a friend.

Is it possible to use a different HP adapter in the mean time? The specs they have are a bit different.

Old one:

  • Input: 100-240V, 1.7A, 50-60Hz
  • Output: 18.5V, 3.5A, 65W

New one:

  • Input: 100-240V, 1.5A, 50-60Hz
  • Output: 19V, 4.74A, 90W

Best Answer

  • Since the maximum power output of the new charger is actually greater, you won't have any problems in that department.

    The difference between the voltages (18.5V and 19V) is minimal. The majority of recent HP laptops are designed to work at 18.5V, 19V and even 19.5V.

    Anyway, your laptop should have a list of compatible chargers the becomes visible if you remove the battery.

    For example, the charger compatible with a DV7 2277CL are:

    • 18.5V 3.5A
    • 18.5V 6.5A
    • 19.0V 4.74A
    • 19.5V 4.62A