AC Adapters for laptops are best bought at the distributor

Your advantages when buying AC Adapters at IPC-Computer

  • AC Adapter sale since 1999
  • Our aspiration: To be able to list original laptop AC Adapter in our shop and deliver it from stock immediately
  • This helped us create a huge laptop spare part warehouse with currently over 20,000 in-stock power supplies
  • Best Prices: Direct relations to the manufacturers ACER, ASUS, DELL, FUJITSU, HP, LENOVO etc.
  • A suitable EU charging cable is included in every order

  • Order the suitable AC adapter with the IPC AC Adapter Finder. You can find the right power supply from more than 120,000 with ease 
  • If you can't find it through the manufacturer or the model, you can also look for the technical features such as Watt, mAh, plug dimensions, size, design etc. in the AC Adapter Finder - It doesn't get any easier!
  • IPC-Computer Solution-Finding - If the power supply purchase does not lead to success, our technicians will help
  • Customer satisfaction is our first priority - A look at our reviews or our guestbook confirms this back to the year 2004
[Translate to Englisch:] Notebook Netzteile

The most popular notebook power supplies

4X20M26272 original Lenovo USB-C AC-adapter 65.0 Watt normal

4X20M26272 original Lenovo USB-C AC-adapter 65.0 Watt normal
In stock
31.03 $
incl. Tax (19%)
plus shipping charges

01FR150 original Lenovo AC-adapter 65.0 Watt EU wallplug

01FR150 original Lenovo AC-adapter 65.0 Watt EU wallplug
In stock
41.73 $
incl. Tax (19%)
plus shipping charges

5A10H42925 original Lenovo AC-adapter 45.0 Watt EU wallplug rounded

5A10H42925 original Lenovo AC-adapter 45.0 Watt EU wallplug rounded
In stock
37.45 $
incl. Tax (19%)
plus shipping charges

KP.06503.018 original Acer AC-adapter 65.0 Watt slim

KP.06503.018 original Acer AC-adapter 65.0 Watt slim
In stock
52.43 $
incl. Tax (19%)
plus shipping charges

74VT4 original Dell AC-adapter 65.0 Watt

74VT4 original Dell AC-adapter 65.0 Watt
In stock
49.22 $
incl. Tax (19%)
plus shipping charges

M1WCF original Dell USB-C AC-adapter 65.0 Watt

M1WCF original Dell USB-C AC-adapter 65.0 Watt
In stock
52.43 $
incl. Tax (19%)
plus shipping charges

0A001-00895100 original Asus AC-adapter 65.0 Watt EU wallplug normal

0A001-00895100 original Asus AC-adapter 65.0 Watt EU wallplug normal
In stock
41.73 $
incl. Tax (19%)
plus shipping charges

36200287 original Lenovo AC-adapter 90.0 Watt

36200287 original Lenovo AC-adapter 90.0 Watt
In stock
55.64 $
incl. Tax (19%)
plus shipping charges

KP.04501.017 original Acer AC-adapter 45.0 Watt

KP.04501.017 original Acer AC-adapter 45.0 Watt
In stock
37.45 $
incl. Tax (19%)
plus shipping charges

5A10W86297 original Lenovo USB-C AC-adapter 135.0 Watt rounded

5A10W86297 original Lenovo USB-C AC-adapter 135.0 Watt rounded
In stock
95.23 $
incl. Tax (19%)
plus shipping charges

SA10M42747 original Lenovo AC-adapter 65.0 Watt

SA10M42747 original Lenovo AC-adapter 65.0 Watt
In stock
47.08 $
incl. Tax (19%)
plus shipping charges

45N0501 original Lenovo AC-adapter 135.0 Watt extended

45N0501 original Lenovo AC-adapter 135.0 Watt extended
In stock
55.64 $
incl. Tax (19%)
plus shipping charges

0A36262 original Lenovo AC-adapter 65.0 Watt normal

0A36262 original Lenovo AC-adapter 65.0 Watt normal
In stock
38.52 $
incl. Tax (19%)
plus shipping charges

MW1G8 original Dell USB-C AC-adapter 130.0 Watt

MW1G8 original Dell USB-C AC-adapter 130.0 Watt
In stock
88.81 $
incl. Tax (19%)
plus shipping charges

5A10W86289 original Lenovo AC-adapter 300.0 Watt large

5A10W86289 original Lenovo AC-adapter 300.0 Watt large
In stock
105.93 $
incl. Tax (19%)
plus shipping charges

741727-001 original HP AC-adapter 45.0 Watt normal

741727-001 original HP AC-adapter 45.0 Watt normal
In stock
51.36 $
incl. Tax (19%)
plus shipping charges

L25298-003 original HP AC-adapter 65.0 Watt normal with adapter

L25298-003 original HP AC-adapter 65.0 Watt normal with adapter
In stock
47.08 $
incl. Tax (19%)
plus shipping charges

4X21L38742 original Lenovo AC-adapter 230.0 Watt small

4X21L38742 original Lenovo AC-adapter 230.0 Watt small
In stock
84.53 $
incl. Tax (19%)
plus shipping charges

KP.04503.010 original Acer AC-adapter 45.0 Watt

KP.04503.010 original Acer AC-adapter 45.0 Watt
In stock
41.73 $
incl. Tax (19%)
plus shipping charges

02DL141 original Lenovo AC-adapter 170.0 Watt slim

02DL141 original Lenovo AC-adapter 170.0 Watt slim
In stock
68.48 $
incl. Tax (19%)
plus shipping charges

4SC19AA#ABB original HP AC-adapter 200.0 Watt rounded

4SC19AA#ABB original HP AC-adapter 200.0 Watt rounded
In stock
84.53 $
incl. Tax (19%)
plus shipping charges

90XB06MN-MPW000 original Asus AC-adapter 240.0 Watt edged

90XB06MN-MPW000 original Asus AC-adapter 240.0 Watt edged
In stock
79.18 $
incl. Tax (19%)
plus shipping charges

ADP-65JH HB original Delta Electronics AC-adapter 65.0 Watt

ADP-65JH HB original Delta Electronics AC-adapter 65.0 Watt
In stock
40.66 $
incl. Tax (19%)
plus shipping charges

671R3AA#ABB original HP USB-C AC-adapter 65.0 Watt rounded

671R3AA#ABB original HP USB-C AC-adapter 65.0 Watt rounded
In stock
52.43 $
incl. Tax (19%)
plus shipping charges

0A001-01056800 original Asus USB-C AC-adapter 65.0 Watt EU wallplug

0A001-01056800 original Asus USB-C AC-adapter 65.0 Watt EU wallplug
In stock
40.66 $
incl. Tax (19%)
plus shipping charges

All Lenovo laptop ac-adapters
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Find the right notebook power supplies by model or features

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Alternative for 7408120000 Packard Bell AC-adapter 90.0 Watt from Delta Electronics

Alternative for 7408120000 Packard Bell AC-adapter 90.0 Watt from Delta Electronics
47.08 $
incl. Tax (19%)
plus shipping charges
In stockshipping today.Express shipping possible.

Alternative for 7426970000 Packard Bell AC-adapter 90.0 Watt from Delta Electronics

Alternative for 7426970000 Packard Bell AC-adapter 90.0 Watt from Delta Electronics
47.08 $
incl. Tax (19%)
plus shipping charges
In stockshipping today.Express shipping possible.

Alternative for 0713A1990 Lenovo AC-adapter 90.0 Watt from Delta Electronics

Alternative for 0713A1990 Lenovo AC-adapter 90.0 Watt from Delta Electronics
47.08 $
incl. Tax (19%)
plus shipping charges
In stockshipping today.Express shipping possible.

Alternative for 0B47473 Lenovo AC-adapter 90.0 Watt from Delta Electronics

Alternative for 0B47473 Lenovo AC-adapter 90.0 Watt from Delta Electronics
47.08 $
incl. Tax (19%)
plus shipping charges
In stockshipping today.Express shipping possible.

Alternative for 36001927 Lenovo AC-adapter 90.0 Watt from Delta Electronics

Alternative for 36001927 Lenovo AC-adapter 90.0 Watt from Delta Electronics
47.08 $
incl. Tax (19%)
plus shipping charges
In stockshipping today.Express shipping possible.

Alternative for 36200431 Lenovo AC-adapter 90.0 Watt from Delta Electronics

Alternative for 36200431 Lenovo AC-adapter 90.0 Watt from Delta Electronics
47.08 $
incl. Tax (19%)
plus shipping charges
In stockshipping today.Express shipping possible.

Alternative for 41R4322 Lenovo AC-adapter 90.0 Watt from Delta Electronics

Alternative for 41R4322 Lenovo AC-adapter 90.0 Watt from Delta Electronics
47.08 $
incl. Tax (19%)
plus shipping charges
In stockshipping today.Express shipping possible.

Alternative for 45J7717 Lenovo AC-adapter 90.0 Watt from Delta Electronics

Alternative for 45J7717 Lenovo AC-adapter 90.0 Watt from Delta Electronics
47.08 $
incl. Tax (19%)
plus shipping charges
In stockshipping today.Express shipping possible.

Alternative for 45N0217 Lenovo AC-adapter 90.0 Watt from Delta Electronics

Alternative for 45N0217 Lenovo AC-adapter 90.0 Watt from Delta Electronics
47.08 $
incl. Tax (19%)
plus shipping charges
In stockshipping today.Express shipping possible.

Alternative for 45N0459 Lenovo AC-adapter 90.0 Watt from Delta Electronics

Alternative for 45N0459 Lenovo AC-adapter 90.0 Watt from Delta Electronics
47.08 $
incl. Tax (19%)
plus shipping charges
In stockshipping today.Express shipping possible.

Alternative for 54Y8864 Lenovo AC-adapter 90.0 Watt from Delta Electronics

Alternative for 54Y8864 Lenovo AC-adapter 90.0 Watt from Delta Electronics
47.08 $
incl. Tax (19%)
plus shipping charges
In stockshipping today.Express shipping possible.

Alternative for 55006310 Lenovo AC-adapter 90.0 Watt from Delta Electronics

Alternative for 55006310 Lenovo AC-adapter 90.0 Watt from Delta Electronics
47.08 $
incl. Tax (19%)
plus shipping charges
In stockshipping today.Express shipping possible.

Alternative for 55Y9400 Lenovo AC-adapter 90.0 Watt from Delta Electronics

Alternative for 55Y9400 Lenovo AC-adapter 90.0 Watt from Delta Electronics
47.08 $
incl. Tax (19%)
plus shipping charges
In stockshipping today.Express shipping possible.

Alternative for 57Y6381 Lenovo AC-adapter 90.0 Watt from Delta Electronics

Alternative for 57Y6381 Lenovo AC-adapter 90.0 Watt from Delta Electronics
47.08 $
incl. Tax (19%)
plus shipping charges
In stockshipping today.Express shipping possible.

Alternative for 57Y6386 Lenovo AC-adapter 90.0 Watt from Delta Electronics

Alternative for 57Y6386 Lenovo AC-adapter 90.0 Watt from Delta Electronics
47.08 $
incl. Tax (19%)
plus shipping charges
In stockshipping today.Express shipping possible.

Alternative for A000048120 Toshiba AC-adapter 90.0 Watt from Delta Electronics

Alternative for A000048120 Toshiba AC-adapter 90.0 Watt from Delta Electronics
47.08 $
incl. Tax (19%)
plus shipping charges
In stockshipping today.Express shipping possible.

Alternative for H000004400 Toshiba AC-adapter 90.0 Watt from Delta Electronics

Alternative for H000004400 Toshiba AC-adapter 90.0 Watt from Delta Electronics
47.08 $
incl. Tax (19%)
plus shipping charges
In stockshipping today.Express shipping possible.

Alternative for K000034040 Toshiba AC-adapter 90.0 Watt from Delta Electronics

Alternative for K000034040 Toshiba AC-adapter 90.0 Watt from Delta Electronics
47.08 $
incl. Tax (19%)
plus shipping charges
In stockshipping today.Express shipping possible.

Alternative for P000538720 Toshiba AC-adapter 90.0 Watt from Delta Electronics

Alternative for P000538720 Toshiba AC-adapter 90.0 Watt from Delta Electronics
47.08 $
incl. Tax (19%)
plus shipping charges
In stockshipping today.Express shipping possible.

Alternative for PA-1750-29 LiteOn AC-adapter 90.0 Watt from Delta Electronics

Alternative for PA-1750-29 LiteOn AC-adapter 90.0 Watt from Delta Electronics
47.08 $
incl. Tax (19%)
plus shipping charges
In stockshipping today.Express shipping possible.

The latest notebook power supplies in our assortment

JFC9P original Dell USB-C AC-adapter 45.0 Watt small Small Slim

JFC9P original Dell USB-C AC-adapter 45.0 Watt small Small Slim
In stock
55.64 $
incl. Tax (19%)
plus shipping charges

492-BDPV original Dell AC-adapter 280.0 Watt slim

492-BDPV original Dell AC-adapter 280.0 Watt slim
In stock
143.38 $
incl. Tax (19%)
plus shipping charges

N22270-001 original HP USB-C AC-adapter 140.0 Watt rounded

N22270-001 original HP USB-C AC-adapter 140.0 Watt rounded
Small stock
105.93 $
incl. Tax (19%)
plus shipping charges

70.G1THG.001 original Acer AC-adapter 85.0 Watt normal

70.G1THG.001 original Acer AC-adapter 85.0 Watt normal
In stock
41.73 $
incl. Tax (19%)
plus shipping charges

N56858-001 original HP USB-C AC-adapter 100.0 Watt rounded

N56858-001 original HP USB-C AC-adapter 100.0 Watt rounded
Small stock
95.23 $
incl. Tax (19%)
plus shipping charges

RC30-04230300-B351 original Razer AC-adapter 280.0 Watt

RC30-04230300-B351 original Razer AC-adapter 280.0 Watt
In stock
287.83 $
incl. Tax (19%)
plus shipping charges

RC30-04840200-B351 original Razer AC-adapter 330.0 Watt

RC30-04840200-B351 original Razer AC-adapter 330.0 Watt
Small stock
277.13 $
incl. Tax (19%)
plus shipping charges

25.TK0MC.001 original Acer AC-adapter 36.0 Watt EU wallplug

25.TK0MC.001 original Acer AC-adapter 36.0 Watt EU wallplug
In stock
31.03 $
incl. Tax (19%)
plus shipping charges

25.A2BMB.001 original Acer AC-adapter 40.0 Watt

25.A2BMB.001 original Acer AC-adapter 40.0 Watt
Small stock
37.45 $
incl. Tax (19%)
plus shipping charges

MDY-13-EE original Xiaomi USB-C AC-adapter 120.0 Watt EU wallplug white (Charging Combo Type-A)

MDY-13-EE original Xiaomi USB-C AC-adapter 120.0 Watt EU wallplug white (Charging Combo Type-A)
In stock
52.43 $
incl. Tax (19%)
plus shipping charges

MDY-11-DZ original Xiaomi USB-C AC-adapter 33.0 Watt EU wallplug white (Charging Combo Type-A)

MDY-11-DZ original Xiaomi USB-C AC-adapter 33.0 Watt EU wallplug white (Charging Combo Type-A)
In stock
26.75 $
incl. Tax (19%)
plus shipping charges

MDY-12-EH original Xiaomi USB-C AC-adapter 67.0 Watt EU wallplug white (Charging Combo Type-A)

MDY-12-EH original Xiaomi USB-C AC-adapter 67.0 Watt EU wallplug white (Charging Combo Type-A)
In stock
41.73 $
incl. Tax (19%)
plus shipping charges

MDY-11-EP original Xiaomi USB AC-adapter 22.5 Watt EU wallplug white (Charging Combo Type A) (Cable not included)

MDY-11-EP original Xiaomi USB AC-adapter 22.5 Watt EU wallplug white (Charging Combo Type A) (Cable not included)
In stock
20.33 $
incl. Tax (19%)
plus shipping charges

0A001-00266400 original Asus AC-adapter 180.0 Watt

0A001-00266400 original Asus AC-adapter 180.0 Watt
In stock
73.83 $
incl. Tax (19%)
plus shipping charges

ADP-230JB DA original Delta Electronics AC-adapter 230.0 Watt

ADP-230JB DA original Delta Electronics AC-adapter 230.0 Watt
In stock
63.13 $
incl. Tax (19%)
plus shipping charges

ADP-180TB HX original Delta Electronics AC-adapter 180.0 Watt Plug dimension 4.5/2.9 mm (outside/inside)

ADP-180TB HX original Delta Electronics AC-adapter 180.0 Watt Plug dimension 4.5/2.9 mm (outside/inside)
In stock
73.83 $
incl. Tax (19%)
plus shipping charges

ADP-90LD H original Delta Electronics AC-adapter 90.0 Watt

ADP-90LD H original Delta Electronics AC-adapter 90.0 Watt
In stock
41.73 $
incl. Tax (19%)
plus shipping charges

ADP-65DE B original Delta Electronics AC-adapter 65.0 Watt

ADP-65DE B original Delta Electronics AC-adapter 65.0 Watt
In stock
34.24 $
incl. Tax (19%)
plus shipping charges

ADP-45FE F original Delta Electronics AC-adapter 45.0 Watt

ADP-45FE F original Delta Electronics AC-adapter 45.0 Watt
In stock
31.03 $
incl. Tax (19%)
plus shipping charges

How does the IPC-Computer "AC Adapter Finder" working?

First, when purchasing an AC Adapter, you need to find out the voltage and current values your notebook needs. A common error pattern of why the laptop is not charging after exchanging the power supply is that a AC Adapter with too little power has been selected. Luckily our AC Adapter Finder can help you find the right one. Additionally, this goes without much effort since you can easily filter out your suitable power supply with the technical data.

Laptop AC Adapter FAQ

Here you can find all questions and answers surrounding AC Adapters.

  • Can I use as well 19 Volt as 20 Volt chargers?

    This is possible, when the difference between the voltage your laptop needs and the one your charger provides is not greater than 1 Volt. So, if your laptop  needs 19,5 Volt, both 19 Volt and 20 Volt chargers can be used.

    Furthermore, you must make absolutely sure that the plugs of the chargers are not only physically identical, but also the pin assignment is identical, ie the pin, which is positive, it should be the same with the other charger. Be careful with chargers that have more than two pins, often a control signal is used here.

    Additionally, the replacement charger should be able to provide at least the same amount of power as the old one. If it is not specified on the charger, it can be calculated from the voltage and the amperage (W = V * A).

  • Can I use chargers from other manufacturers for my Notebook?

    Generally you can use a charger from any manufacturer with any device, as long as the voltage and the plug are the same and the wattage is greater or equal to that of the original power supply.

    See also:
  • Can I use my old power supply for my new Notebook

    Whether you can continue using your old power supply depends on three factors.

    • Is the plug identical to the one of your old Notebook?
    • Is the wattage greater or equal then the one of the old power supply?
    • The Voltage has to be the same, however a tolerance of +/- 1 Volt is acceptable.
  • How do I find out how what the output power (watts) of my power supply is

    All the necessary information to calculate it can be found on the back of the power supply. To calculate the output power of the unit, use the specifications listed under "output".

    Calculation:

    Ampere * Volt = Watt

    Example: 4,74 A * 19 V = 90,06 W

    The power supply therefor has 90 Watt.

  • How do I find the right power supply for my Notebook in your online shop?

    In our online shop you can choose your notebook in the menu on the left, then all compatible articles will be listed.

    If you can't find your model, you can also enter the manufacturer part number of your power supply in the search.  

    Examples for manufacturer part numbers:

    Toshiba: A000007000, K000060890, PA3468E-1AC3
    Acer: AP.06501.024, 7452480100
    Fujitsu-Siemens: UWL:76-01B900-5A, WTS:25.10173.071, FSP:811002431
    Asus: 90-XB0KOAPW00070Q
    HP: 381090-001
    Lenovo: 40Y7673

    Examples for part numbers, that can also be found on power supplies but are not manufacturer part numbers:

    ADP-60SH B, PA-1650-54, ADP-90CD, PA3468-1AC3

  • I have a 65 watt power supply, can I also use one with 90 watt?

    Yes, you can use a power supply with a higher wattage, however you need to pay attention that the voltage doesn't deviate more than one volt from the voltage of the original power supply.

    It also doesn't work the other way around; your new power supply needs to have at least the same wattage as the old one.

  • I would like to use my Laptop in my car, what kind of power supply do I need?

    To use your laptop in a vehicle you need a car-adapter, which converts the 12 Volt your car provides to 19 Volt most Laptops need.

    If there is no car-adapter, that is compatible to your notebook, you can use an inverter which generates mains power from the power, supplied by the car. You can then plug your normal power supply into it.

  • My laptop battery is no longer charging, is my charger broken?

    Not necessarily, try taking your battery out (if possible) and starting the computer while connected to the charger in question. If it starts, the power supply is working but something in the Notebook is broken.

    There are also multiple indicator lights, on the laptop, whether it is being charged, also this can be seen in most operating systems. You can also use the indicator light found on some chargers to diagnose an issue with a cable.

  • My power supply causes sparks when plugging it in, can this cause damage to my laptop?

    No, your laptop can not be damaged by this, the sparks are a result of the inrush current and are typical for switching power supplies.

    If you are still unsure, you can plug your charger in before plugging it into the device.

  • My power supply is getting pretty hot, is that normal?

    Power supplies are subject to certain specifications and can reach up to 50°C. The most amount of heat is produced when working on the Notebook and charging the battery at the same time. As long as you can touch your charger without getting burnt, its temperature is probably within specification. However, it is most important, that the heat can be dissipated, therefor you should never put your power supply under a blanket or in a closed drawer.  

  • My USB-C charger will not charge my device correctly.

    Oftentimes the reason for this is, that with USB-C all devices have to agree on the current and voltage used for charging. Therefore, all involved devices must support USB Power Delivery, so that enough power can be transmitted to charge devices such as laptops. The cable used for charging is also part of these devices, which means you have to make sure your cable supports USB-PD. If one or more devices do not support USB-PD a maximum of 15 Watt can flow.

  • What is the difference between the Apple MagSafe 1 and the MagSafe 2 connector?

    The middle Pin on the MagSafe 1 connector is a bit thinner, than the others, whereas on the MagSafe 2 all are the same size. In comparison to the MagSafe 2 connector less wide but a bit taller. Before the L shaped MagSafe 1 there was also a T shaped one however power supplies with it are no longer produced. The ones with the L shaped MagSafe 1 connector can be used instead.

  • What meaning do the test marks on the power supplies have?

    CE-Zeichen

    The CE-mark confirms, that the power supply is compliant with all EU regulations.

    CCC-Zeichen

    If the CCC-certificate is present, the power supply may be im- or exported to and from China.

    NOM-NYCE-Zeichen

    The NOM mark is issued by the NYCE. The NOM (Normas Oficiales Mexicanas) is mandatory in Mexico.

    PCT-Zeichen

    The PCT-certificate is mandatory for importing or exporting to or from Russia.

    PSE-Zeichen

    The PSE-test mark is mandatory in Japan and is issued by the Ministry of Economy, Trade and industry.

    Safty-Mark-Zeichen

    The Singapur Safety-Mark is issued by the technical inspection agency of singapur.

    TÜV-Zeichen

    TÜV - Geprüfte Sicherheit. The technical inspection agency inspects for compliance with the product safety law, integrates many other product specific checks and asserts whether the manual is correct and complete

    UL-Eco-Zeichen

    The UL-certification mark for sustainable products indicates, that a product has been tested by the UL Environment Inc. and is compliant with their testing criteria.  

    UL-Listed-Zeichen

    The UL Listed-mark indicates, that a representative unit has been tested by the UL and meets their safety criteria. These criteria are largely based on the safety standards published by the UL

  • What types of mains plugs can I order?

    Here is a list of country specific mains plugs, which we can deliver with your new power supply.

    Please note, that you can not order the mains plugs on their own!

    LandSteckertyp
    Belgium(BEL)F
    Denmark(DEN)C oder F
    Denmark(GER)C oder F
    Finland (FIN)C oder F
    France(FRA)C oder F
    Greece(GRE)C oder F
    Italy (ITA)C oder F
    Liechtenstein (LIE)C oder J
    Luxembourg (LUX)C oder F
    Netherlands (NED)C oder F
    Norway (Noder)C oder F
    Austria (AT)C oder F
    Poland (POL)C oder F
    Portugal (POR)C oder F
    Romania (ROU)C oder F
    Sweden (SWE)C oder F
    Switzerland (CH)C oder J
    Spain (ESP)C oder F
    Turkey (TUR)F
    Great Britain(UK)G
    United States(US)A oder B
  • Why does the plug of my new power supply not fit into my notebook, even though the part number is the same as the old power supply?

    You ordered using the part number of the power supply manufacturer (DELTA, LiteOn, …) and not the notebook manufacturers part number. The power supplies are often bought by the Notebook manufacturers and then outfitted with different plugs. These plug variants are no longer considered in the part number of the power supply manufacturer. An example: ADP-90MD H is sold by Acer with a plug with a 5,5mm outer and a 1,7mm inner diameter but other brands sell it with a 5,5/2,5mm plug.

  • Why is my power supply humming, hissing or beeping?

    Basically, a power supply converts the AC voltage from the mains into a lower DC voltage for a consumer. In the case of a laptop power supply, the output voltage and maximum output current are usually fixed.

    The main component of any power supply unit or power supply is a transformer. In laptop power supplies, this is usually characterized by a very compact design.

    The 220-volt alternating current from the wall socket generates a magnetic field in the transformer, whose charge changes from positive to negative 50 times per second. These electrical oscillations can cause parts of the transformer wires, iron cores and coils to move slightly. While the parts are usually glued together tightly, the connections can become partially loose for a variety of reasons, or the insulation on the coil wires can become brittle. And this can cause the annoying noises. The power supply hums.

    The movements of the transformer components can also be transferred to other components in the very compactly designed laptop power supply and cause additional small vibrations there, which also cause noises.

    Reassuring when the power supply hums: Noise developments in power supplies don't affect the electrical functionality and are usually harmless.

    Depending on the cause of the noise, mounting the power supply differently, e.g. on a different base or on a piece of foam rubber, may solve the problem.

  • Will my battery charge faster with a power supply that has a higher wattage?

    No, because a circuit in the Notebook controls how much power arrives at the battery and not the charger.