It's not Anker or Xiaomi: the external battery that I always carry in my backpack and charge my laptop

A portable power bank has emerged as a game-changer for users seeking reliable backup energy for laptops, challenging established brands like Anker and Xiaomi. The device in question is the MOVESPEED M25Pro, which offers significantly higher power output than typical mobile batteries. Available for around €39.99 on AliExpress, this battery has gained attention for its ability to charge laptops through USB-C ports, a feature previously associated with high-end models. The user who tested the MOVESPEED M25Pro noted that while many portable batteries focus on charging smartphones, this model is designed to support more demanding devices. It delivers up to 140 watts via USB-C with PD 3.1 technology, enabling it to charge laptops such as MacBooks, Dells, and Lenovos. This level of power output is crucial for maintaining productivity during extended periods away from a power outlet. Unlike conventional power banks, the M25Pro’s capacity of 25,000 mAh is tailored for laptop use rather than mobile phones. Its design allows for charging at up to 100 watts, meaning users can recharge their laptops without needing to keep the battery connected overnight. The battery's weight, around half a kilogram, makes it practical for daily carry, despite its increased size compared to standard power banks. One notable feature is the integrated cables, eliminating the need to search for separate charging cords. Additionally, the display provides real-time information on remaining charge and current power delivery, helping users monitor performance effectively. However, the device does not support wireless charging, which could be a drawback for some users accustomed to that convenience. While the manufacturer claims a maximum output of 140 watts, actual performance depends on the quality of the cable and the laptop’s charging capabilities. Users should expect a reduction in power delivery based on these factors. Despite this limitation, the M25Pro still surpasses most mobile-only power banks in terms of functionality and versatility. The brand behind the MOVESPEED M25Pro is not widely recognized, yet it has garnered positive feedback from users. One reviewer mentioned that they have been using the battery regularly, appreciating its reliability and ease of integration into their routine. The product is particularly appealing to professionals and students who require consistent power supply for their laptops on the go. With a recent price drop, the M25Pro is currently more affordable than other laptop-compatible power banks. If it runs out of charge, alternatives with USB-C ports capable of delivering 100 watts remain viable options. While the brand may not be familiar to all consumers, its growing reputation suggests that it could become a preferred choice among tech-savvy users looking for enhanced mobility and efficiency.