Laptop owners who lose or break their original power adapter do not need to purchase a replacement from the same computer manufacturer, according to technology publication BGR.
Journalists at the outlet reported that third-party charging units can fully replace original hardware as long as consumers match the power output of the charging block and the electrical capacity of the cable.
Rechargeable laptop batteries require different amounts of power depending on the size and design of the computer. Compact notebook models may only require 30 watts, whereas larger or higher-performance laptops need 65, 100, or even 140 watts to charge efficiently.
Specialists noted that connecting an adapter with lower wattage than the laptop requires will result in slower charging speeds. When a computer supports USB Power Delivery, the device and the connected charger negotiate a mutually compatible power transfer level, which specialists advised users to check before selecting an accessory.
USB Power Delivery is an open standard protocol developed to allow uniform power transmission across mobile devices over USB Type-C connections. Modern laptops and smartphones increasingly adopt standardized charging hardware rather than proprietary power connectors, enabling consumers to use single adapters across multiple electronic devices.
Matching power wattage and cables
Choosing an appropriate power brick is only part of the requirement, according to BGR. The authors explained that even a high-capacity power supply will fail to deliver fast charging if the accompanying cable is rated for a lower electrical load.
Charging cables carry specific current limits defined by their internal wiring thickness and controller chips. Cables designed primarily for mobile phones may not support high-wattage power transfer, creating a bottleneck that prevents laptops from drawing full power even when paired with a high-capacity wall adapter.
BGR concluded that third-party chargers can serve as full replacements for original equipment, but buyers must carefully verify specifications during selection to avoid performance issues.
Concerns over laptop screen protection
The advice on power accessories follows a separate report by technology news outlet Engadget regarding aftermarket laptop attachments. Engadget journalists stated that protective films and glass screen protectors designed for laptop screens can cause more harm than benefit.
The publication explained that protective glass layers can degrade overall image quality and potentially cause permanent physical damage to the display matrix. Laptop display assemblies are manufactured with tight clearances between the keyboard and screen, meaning additional screen covers can concentrate pressure on the panel when the laptop casing is closed.
