The war between Google and Microsoft seems to be far from over.

“What occurs when three indistinguishable apparatus run on different browsers?” Microsoft requested to a YouTube video in a description it posted on Monday. The Microsoft Edge team needed to learn.

Microsoft shared how long it took for a complete battery to deplete as each apparatus expired. In Chrome’s instance, it took 20 minutes and almost four hours. Mozilla’s Firefox came in second to-last spot with more than five hours of battery life. After the machine it was running on expired after six hours Opera do comparatively well. Microsoft’s Edge browser, nevertheless, was the winner, clocking over seven hours and 22 minutes of battery life.

As you’ve likely seen, we’ve made major progress in recent launches to power consumption, and it’s an area of continued focus and investment a Google representative said in a statement. And by Chrome 53, we feel assured that we’ll be at par with other browsers when it comes to power consumption for many video playback on the Internet.”

Naturally, while Microsoft claims that its evaluation was not unfair, it’ll certainly come under examination among those who say the firm has a vested interest in seeing its own browser win. Microsoft might also be criticized for using a device it designed, Surface Book, as opposed to a third party merchandise. Microsoft was more, and quick to recognize that an user’s battery life may vary determined by the situation, including device settings, what an user is doing.

However, the video clearly shows that Microsoft is expecting users will turn. The browser was passed after a terrible taste was left by Internet Explorer in users’ mouths, and has been touted by critics and users alike for being a noteworthy upgrade over its predecessor.

Microsoft, which was the dominant browser manufacturer on the planet, is an afterthought among many users. Based on information from NetMarketShare, which examines browser use, Google’s Chrome possessed 46% of the global browser market in May, topping Microsoft’s Edge, which had only 5% share.

While Edge might or mightn’t be a better battery-saver, other variables are considered by users when they select a browser, including its rate, its security attributes, and layout. So, while Edge might be a victor on battery life in Microsoft’s own testing environment, that attribute might do little to alter users’ minds.