Laptop battery life is being massively exaggerated by manufacturers and here is the proof


If you think your laptop battery runs out quicker than it is meant to then you could be onto something.

A study carried out in the UK claims manufactures are greatly exaggerating the battery life on new laptops.

According to Which? almost all major manufacturers overstate claims of how long their batteries will last for before needing to be recharged. Some were even claiming their batteries have double the amount of life than they actually do.

During the study, Which? carried out tests on 67 models of laptops over a 12 month period. The laptops tested were from brands such as Acer, Apple, Asus, Dell, HP, Lenovo and Toshiba.

Apple’s MacBook Pro was found to be the best performing and was the only laptop to get anywhere near the figures claimed.

All the other Windows 10 powered laptops performed pretty poorly, with the biggest offenders found to be Dell and HP.

Which? says that each laptop was tested a total of three times where it was used for browsing the internet over Wi-Fi until the battery was completely drained.

Image: Which?

Image: Which?

The tests found that only Apple met its claimed average battery life of around 10 hours. However, the biggest discrepancy in battery life came from HP which says its battery will last for 10 hours but on average on lasted for around half that time at just over 5 hours.

Dell and Toshiba were the next worse offending brands, while Acer, Asus and Lenovo came in just behind.

On average, Asus was found to last for 7 hours, despite claiming 10 hour battery life. Acer managed 6 hours out of an estimated 8.

“Manufacturers are missing their claims not by minutes, but by hours,” said Which?

“We believe that these tests are representative of the real world use that a laptop would get,” Which? said.

“As the figures we arrived at are often drastically different to the manufacturer claims, we have to wonder how their estimates are arrived at.”

Only Dell and HP responded to the findings.

Dell told Which?: “It’s difficult to give a specific battery life expectation that will directly correlate to all customer usage behaviours because every individual uses their PC differently – it’s similar to how different people driving the same car will get different gas mileage depending on how they drive.”

HP said its battery tests “uses real life scripts and runs on real applications like Microsoft office,” and that things like screen resolution will also impact on battery performance.


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