Can I replace original 16V adapter with a 20V laptop ac adapter?
” I have an older IBM R40 Laptop with an AC adapter with and output of 16V, 4.5Amp. I ordered a replacement from Lenovo but it is a 20V output unit. Can I safely use this?”

I wouldn’t use this hp ac adapter. If you are replacing the PPP014L-SA AC adapter, it’s very important to buy a new one with exactly the same voltage. Higher incoming voltage can damage the laptop.

You can follow this rule when you are looking for a new PA3290E-3AC3 adapter. The voltage output must be the same. The amperage can be the same or higher than on the original one.

I don’t think that you can safely use a 20V adapter instead of your original 16V adapter.

All new laptops come with dell inspiron 1520 adapter . Adapters are used for charging laptop batteries and also used to supply power directly. There are occasions which we require to buy an AC adapter. Most laptop users travel, for tdose travel to Australia, Europe or US they require AC adapters that take 100-240 voltage input and output 16 voltage or 19 voltage.

Let us present 3 easy steps to pick the right laptop AC adapter for your laptop.

  1. Finding the right "tips" – Different laptops have different connectors. You need the right tip for your laptop. This is very simply to find. Basically, hp pavilion dv6000 adapter comprise of 2 ends. One end is male power outlet. You use this end to plug into wall power outlet. The other end is called "TIP" which you will plug this tip into the "DC IN" in your laptop.
    Your laptop won’t work on the wrong tip. You can only use the " matching Tips" Warning : DO NOT try to force it in.
  2. Finding the right "output voltage" – Different laptops were designed to consume power varied by equipments such as CD-Rom, LCD size, CPU maker and CPU speed. You require to use the "matching voltage" . Only use the Acer PA-1650-02 adapter output the matching voltage of your laptops. You can easily locate your laptop voltage. Mostly, voltage is printed on your laptops. You also can check your laptop manual.
  3. Find the right "input voltage" – for tdose users who will travel abroad especially to Europe and Asia. You would need laptop AC adapters that compatible with 220-240 voltage also. So it would be wise…and yes…you are!!…. Always look for Toshiba Satellite A105 Charger accept 100~240 voltages. 100~240 voltages AC adapters will go with you worldwide. You do not need to carry 2 adapters anymore.

    4. That’s easy! You now know the basic knowledge to find the right dell PA-1650-05D2 AC adapter for your laptop.
    Better yet!Laptop AC adapter manufacturers are now promoting "universal AC adapters".
    This emerging adapters can be used with multiple devices. They can accept 100~240 input voltages and also adjust the output voltage to match device automatically.

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