Choosing a laptop based on what might be the "best" laptop brand isn't the best initial approach—assess laptops model by model instead. Some brands have reputations for what they're best suited for. But going by those alone can mean you miss a winner from a different brand.

For instance, Apple has long been known for its MacBooks' particular aptitude for creative professionals, from writers to photo/video editors and even digital designers. Meanwhile, Lenovo is best known for its class-leading keyboards and its ThinkPad business machines. As a last example, brands like Acer and Asus, while they have high-end models, tend to dominate the midrange and budget sectors with value-minded systems. Other major makers of first-rate laptops include HP and MSI. But you'll find tons of crossovers in all of these assessments that make relying solely on brand almost meaningless.

If knowing the top laptop brands still drives you, go with the wisdom of the crowd: See what you can find within our running Readers' Choice: Best Laptop Brands series, which polls readers like you to name their favorite laptop brands for specific use cases and scenarios.

Many of the best laptops can last the better part of a workday away from an outlet. You'll find exceptions. A leading laptop with a 4K display and a powerful CPU may last less time, and gaming laptops deplete far sooner than most other machines. And when playing demanding GPU-taxing games? Gaming laptops run out of juice faster than most. Much depends on how you compute; even powerful laptops have become adept at sensing when maximum power isn’t required, reducing various components’ consumption.

This is where PC Labs’ battery testing comes in. We evaluate battery life by playing a locally stored video file nonstop at middle brightness. An excellent result suggests that the laptop can adapt its power use to the task at hand; our testing lets you compare the potential of the machines you are considering. We evaluate all laptops using this test.

Measuring battery life is never an absolute, though, since it depends on how you use your laptop. Your usage profile probably doesn’t match our test—or anyone else’s—to a T. So you’ll want to look at tested battery life in a relative, not absolute, sense.

If you're keeping score, HP's OmniBook X AI (based on a Qualcomm Snapdragon X Elite CPU) and the Apple MacBook Pro 14 (the M3 model) are today's longest-lasting laptops we've reviewed, enduring 30 hours on our battery rundown test.

Every manufacturer and reseller has different standards for refurbishing used laptops. It is best to buy any refurbished machine directly from the manufacturer’s online store rather than a reseller.

Some resellers or third parties will rate their refurbished stock with a grade. (It pays to ask who has done the refurbishing—the manufacturer or the reseller.) Refurbished laptops are sold and rated with grades of A, B+, B, C, and so on to reflect their wear and tear. However, it’s generally up to the reseller what the grade means. We strongly recommend insisting on an ironclad return policy in the case of purchases like these if you decide to roll the dice. You could end up pleasantly surprised, but usually, a refurbished laptop deal that looks too good to be true...is.