HP Spectre Laptop Review: A Thin, Sleek, Nimble Beauty
HP Spectre Battery Life And Acoustics
Battery Life And How We Test:
In the following benchmarks we employ two very different battery life tests--Battery Eater Pro and a custom 1080p HD video loop test--to prove out battery life with our test group of machines. In all tests, Windows 10 Quiet Hours have been enabled and displays are calibrated with lux meters on pure white screens to as close to 115 lux as possible. For the average notebook this is somewhere between a 45 - 60% brightness setting, though it varies from machine to machine.Since notebook displays significantly affect power consumption and battery life, it's important to ensure a level playing field with respect to brightness of the display for battery testing. However, since many notebook displays vary in brightness at each respective brightness setting in Windows, this calibration with the meter is also critical to ensure all displays are set to as near identical brightness as possible before testing.
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Battery Eater works all subsystems including processor, graphics, memory and storage in its efforts to exhaust a battery as soon as possible. We have lots of legacy comparison data on this test, so we have a wider swath of numbers to compare to.
The HD video loop test, however, is new for us here, so we're still compiling reference numbers from a variety of different systems and notebook products.


The HD video loop test, however, is new for us here, so we're still compiling reference numbers from a variety of different systems and notebook products.


As you can see, the HP Spectre did make trade-offs for thinness with respect to battery life. Under heavy load in our Battery Eater test, the Spectre's fans were spinning constantly and coupled with its robust Core i7 dual-core CPU, it drains the Spectre's understandably thin 38 WHr battery very quickly. However, under light duty workloads where the Spectre can breath a bit easier, it certainly fairs better, and finishes more in the middle of the pack. In our HD video loop test, the HP Spectre managed a little over four and a half hours of uptime before exhausting its battery.