ZDNET's key takeaways Total battery capacity is only one factor influencing actual device longevity.Lab tests demonstrate how ...

We test every laptop we review in our testing lab, and of the 100+ laptops we reviewed in 2025 these 10 lasted the longest ...

Momodou Wurry Jallow, an electrical engineering major at Alfred University, gives a demonstration on battery testing equipment installed in a lab in the McMahon Engineering Building. The demonstration ...

There’s nothing more frustrating than hearing the familiar ding of a dying battery. This scenario always seems to happen when there’s zero outlets in sight. Bummer, man. Nowadays, laptops are lasting ...

We've tested the best phones you can buy in the US alongside many popular mid-range and budget models. One of the most important and objective tests we conduct is a standardized battery test. We're ...

The new iPhones Apple unveiled last week offer improved battery life, at least according to official estimates. Better battery life is something buyers expect from each new iPhone generation.

There have been many incidents in which battery failure has caused fires, with the news reporting catastrophic results in some instances. Decomposition reactions in batteries’ electrolytes and ...

Modern electronic technologies like smartphones, laptops, and electric vehicles (EVs) are in high demand. As these technologies evolve with more and more functionalities, the demand for better, more ...

Struggling with fast battery drain on your Android phone? In this article, we explore five smart hacks and simple setting ...

ZDNET experts put every product through rigorous testing and research to curate the best options for you. If you buy through our links, we may earn a commission. Learn Our Process 'ZDNET Recommends': ...