Read professional reviews of Apple’s new MacBook Pro lineup, and you’ll come away thinking the new laptops have great battery life. Dive into a customer forum, though, and the upshot will be exactly the opposite: The new MacBook Pros have “piss poor” battery life. That characterization came from user yillbs on.

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“I don’t think anyone can convince me that this thing isn’t just flat out the worst battery life ever on a MacBook,” yillbs wrote, clearly frustrated. “I’ve been defending it like mad, but at this point. 4.42 hours is just bad.” User Happypuppy was anything but. “Not happy with the battery either. I was editing my MacBook review video last night and at 6:28 p.m. It was at 100 percent,” Happypuppy wrote. “At 8:52 p.m. It was down to about 42 percent.” Adam Patrick Murray Complaints about poor battery life on the new MacBook Pro lineup have been piling up—despite the laptops’ high marks for battery life from professional reviewers.

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Contrast those writeups with, which said: “Battery life is also solid, with both models lasting a full day of heavy use, with multiple apps open, dozens of Safari tabs, streaming music to Spotify, and occasionally indulging in some video viewing with Sierra’s picture-in-picture feature.” Macworld isn’t alone. From Laptopmag to The Verge and Notebookcheck.net, the vast majority of reviewers have lauded the MacBook Pros for good battery life.

My own tests agreed. I’m no fan of the MacBook Pro’s butterfly-switch keyboard, nor its lack of USB Type A ports, but one thing I do know is it has relatively good battery life. When I tested both a non-Touch Bar 13-inch MacBook Pro and the base 15-inch MacBook Pro some months ago, I was able to coax about nine hours of 4K video playback from each at 255 nits of brightness. A search for the truth The truth about the MacBook Pro’s battery life had to be somewhere in this mess of conflicting results. I returned to the MacBook Pro 15 I’d tested before to put it through multiple run-down scenarios, charging and discharging the MacBook Pro 15 under different loads over the course of many days.

This particular MacBook Pro 15 is the baseline model with a Core i7-6700HQ, Radeon Pro 450, 16GB of LPDDR3/2133 RAM, and 256GB of flash storage. The OS I used in the majority of these tests was the latest public one available when I started my testing: macOS Sierra 10.12.2. I disabled automatic screen dimming and manually calibrated brightness using our Minolta photometer for each of the brightness settings I used. You’d typically run these tests multiple times to calculate an average to reduce variability. Given the considerable time it takes to perform individual run-down tests, I went with a more casual single-run scenario. Adam Patrick Murray The MacBook Pro 15 with discrete graphics has indeed suffered from a software problem that chews up the battery. Video playback is still great For the first test, I ran the open-source 4K movie. The actual video player you use can have a huge impact on battery life (you can read more on this topic ), so I opted to use Apple’s QuickTime player.

Apple’s official video run-down test uses iTunes, but I’ve never figured out how the company is able to get the video to loop for its tests. The video was looped with the Wi-Fi switched off and audio on. Rather than the laptop’s speakers, I used earbuds to (theoretically) reduce the power drain from driving the larger speakers. The brightness settings I used were at a fairly dim 100 nits, a fairly bright 257 nits (which is a good setting for an office or home in the daytime), and finally, the laptop’s maximum brightness setting of 500 nits. The MacBook Pro 15 has pretty stellar life playing video. Set to 257 nits, we’re seeing just about eight hours of battery life.

• For this example, remove the check mark next to the Student ID column heading. • All field names or column headings for the data table are selected. • The dialog box closes and is replaced by the message: 1 duplicate values found and removed; 6 unique values remain. Finding duplicates in excel without removing. • Excel searches and removes records that have matching data in the Last Name, Initial, and Program fields. • To find and remove records that do not have a match in every field, remove the check mark next to those field names that you want Excel to ignore.