Best laptops with the longest battery life in 2020: Dell, Acer, Asus, HP, Lenovo, and more

A laptop with good battery life used to be mean a skinny, under-powered notebook that sacrificed performance to squeeze every extra minute out of a charge. Obviously the more powerful a system is, the more power it draws, and the less time a battery can handle supplying that power. 

But research into extending battery life — not to mention work from processor manufacturers — has yielded huge dividends over recent years, and while the super-svelte portables and the laptops designed for basic productivity tasks (think Chromebooks) still provide the most time between charges, there are far more systems that boast solid battery life without sacrificing nearly as much performance as they once…

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