Buying a laptop charger is not simply about finding one that fits the charging port. The voltage, wattage, connector size and compatibility all need to be correct.
If you need a replacement charger, here’s a simple way to find the right one for your laptop.
1. Check Your Old Charger
Start with the charger you already have. Look at the label on the adapter for information such as:
- Output voltage (V)
- Output current (A)
- Power (W)
- Connector size
- Model or part number
For example, a charger may be labelled 19.5V 3.33A 65W.
These numbers are important when looking for a replacement.
2. Check Your Laptop Model
You can also identify the charger by finding your exact laptop model.
Check the sticker underneath the laptop or go to:
Settings → System → About
You can also press Windows + R, type msinfo32, and check System Model.
Search for a charger specifically designed for that model rather than buying one simply because the connector looks the same.
3. Check the Voltage and Wattage
The replacement charger should have the correct output voltage required by your laptop.
Wattage is also important. A laptop designed for a 65W charger, for example, needs a charger capable of providing the required power.
Gaming laptops and high-performance laptops can require significantly higher wattage, such as 135W, 180W, 200W or 230W.
If you’re unsure, check the original charger’s label or the laptop manufacturer’s specifications.
4. Check the Connector
Laptop chargers come with different connector sizes and designs.
For example, HP uses different barrel connectors, including its familiar Blue Pin connector on many models, while newer laptops may use USB-C.
The connector needs to physically fit and, more importantly, be electrically compatible with the laptop.
5. USB-C Chargers Are Different
If your laptop charges through USB-C, don’t assume that every USB-C charger will work.
USB-C charging can depend on the laptop’s power requirements and USB Power Delivery (USB PD) support. The USB-IF explains that USB Power Delivery allows compatible devices and chargers to negotiate available power.
Check your laptop’s required charging power before purchasing a USB-C adapter.
6. Original vs Compatible Chargers
You may find both original manufacturer chargers and compatible replacement chargers.
When choosing a replacement, check that the charger has the correct:
- Voltage
- Wattage
- Connector
- Polarity where applicable
- Laptop compatibility
A charger being advertised as a “universal laptop charger” doesn’t automatically mean it is suitable for your laptop.
Where to Buy Laptop Chargers in Nairobi
If you’re looking for a laptop charger in Nairobi, Lapsol Technologies supplies chargers and adapters for various HP, Dell, Lenovo, Apple and other laptop models.
You can browse Lapsol Technologies laptop chargers and adapters or contact us with your laptop model and a photo of your existing charger.
Frequently Asked Questions
Can I use a higher-wattage laptop charger?
It depends on the laptop and charger specifications. The charger must provide the correct voltage and use the appropriate connector and charging standard. When in doubt, use the manufacturer’s recommended charger.
Can I use a different brand charger?
Sometimes, yes, provided the replacement charger is properly compatible with the laptop’s voltage, power requirements, connector and charging system.
How do I know which charger my laptop needs?
Check the old charger’s label and your laptop’s exact model. If you’re still unsure, provide these details to a laptop spare-parts supplier before buying.
Final Tip
Don’t buy a laptop charger based on the connector alone. Check the laptop model, voltage, wattage and connector before making your purchase. If you still aren’t sure, send a photo of your old charger and laptop model to a trusted supplier for compatibility checking.
