Choosing a new power supply for your laptop raises a lot of technical questions. After sharing specific advice for Dell users, we now focus on the key criteria to follow for devices from the Acer brand.
There are many situations where you may need to buy a replacement charger: the original adapter has failed, it has been lost, or you simply want a spare one.
Even though buying a replacement charger might seem straightforward, there are crucial technical details you must check to ensure compatibility and avoid damaging your laptop.
Why is it so important to make sure your Acer charger is compatible?
Your new power supply must be perfectly compatible with the specifications of your particular laptop model. This does not necessarily mean you have to buy a part with the Acer logo on it.
Well-known manufacturers such as LITEON, DELTA and AcBel are the main suppliers of very high quality adapters. It is even possible that your original charger was made by one of these companies.
Beyond the brand name, here is the information you absolutely must check:
What is specific about Acer products?
Unlike most brands that prominently display their logo on all their accessories, Acer is often less explicit. The company does not always mark its batteries and adapters with its name, and you may instead see the product reference or the logo of the company that manufactured it.
On top of that, the power rating in watts (W) is not always clearly visible on the label, which can make the identification process a little more confusing. If you are having trouble, we are here to help.
Which technical data do you need in order to buy the right charger?
To purchase the correct adapter, the following data is essential:
- The input and output voltages: The input voltage is the mains power drawn from the wall socket. Normal values are between 110V and 240V. On the adapter label you will usually see a wide range (100V to 240V), indicating universal compatibility.
- The output voltage (in V) is the most critical value, as it is the operating voltage of your laptop.
If this value is lower than your laptop’s requirement, the battery will charge very slowly or not at all, and the device may not start. If you pick an adapter with a higher output voltage, the laptop will generally not power on and, in rare cases, this could cause the device to fail.
- The plug type: There are two- or three-pin plugs. Acer uses standard two-pin plugs. It is absolutely essential that the plug size matches the power socket on your laptop exactly to avoid damaging the DC jack or snapping the connector.
The dimensions are defined by the outer diameter (OD) and the inner diameter (ID) of the connector:
- Outer diameter: 3.0 mm / Inner diameter: 1.0 mm
- Outer diameter: 5.5 mm / Inner diameter: 1.7 mm
- Outer diameter: 5.5 mm / Inner diameter: 2.5 mm
- Outer diameter: 7.4 mm / Inner diameter: 5.0 mm
- The output power: The power rating, measured in watts (W), is also printed on the label (although, as mentioned, not always clearly on Acer adapters). A 90W power supply can deliver any power level up to 90W.
If your original adapter is rated at 65W, the new one must be at least 65W. Using a more powerful charger (90W or 120W) is perfectly safe and will not cause any damage.
Where can you buy a new adapter?
If you have to replace your power brick, you will naturally look for information and products on the internet. Whether you buy online or from a physical shop, by referring to the characteristics listed above you should be able to choose the right product. Both options have pros and cons.
Online shop for adapters
The advantages of a reliable online platform include:
- A very wide range of products to choose from.
- Powerful search and comparison tools.
- Fast delivery, often with tracking and confirmation options.
- A returns guarantee.
The main drawback is the risk of online fraud. To avoid this, be careful: the website must clearly display the company name, address and contact details. Also pay attention to the country of dispatch: if this information is hidden, delivery could take a very long time.
If you have any questions or doubts, you can contact BatteryLaptop via www.batterylaptop.co.uk for advice. Feel free to send us a photo of the label on your old adapter, a photo of the sticker under your laptop, or simply the exact model number of your device.
Specialist physical retailer
In physical shops you have the opportunity to get direct advice, to test adapters and to make an informed choice. This is the option to go for if you need a charger urgently. However, it is a good idea to call ahead to make sure they have the model you need in stock.
How can you be sure the problem is with the charger? common diagnostics
The adapter is plugged in, but the laptop will not switch on.
The most common causes are:
- Failure of the adapter itself.
- A damaged or disconnected cable.
- An internal hardware fault that is not related to the power supply.
As a rule, if the adapter or the cable is the source of the problem, the laptop will not show any lights at all.
The power supply is plugged in and the laptop works, but the battery is not charging.
The likely reasons are:
- The battery has failed.
- The third pin (the communication pin) of the charger is disconnected.
To find out whether the problem comes from the charger or from the battery, the easiest method is to carry out a cross-test with another charger or to fit the battery into another compatible laptop.
The charger works and charges the battery, but it emits a loud whistling noise.
You can carry on using the adapter, but you should be cautious. Do not leave it plugged in unattended. This noise is a sign that you will probably need to replace it soon.
The adapter works and charges the battery, but it gets very hot.
It is completely normal for power supplies to heat up during prolonged use. It is hard to define the exact limit between normal heat and overheating, but if you cannot comfortably keep your hand on the adapter surface, it is strongly recommended that you contact a service centre or arrange an immediate replacement.
The laptop switches off as soon as it is moved.
In most cases, the cause of this problem is a connector or a broken/damaged DC jack on the laptop itself.
The laptop switches off for no obvious reason while it is powered on.
Again, the most common cause is a broken or damaged DC jack or internal connector on the laptop.
