Welcome to a laptop battery specialist of the Sony laptop battery
We now also have battery life tests on the new MacBook Pro with Retina Display. Our MacBook Air tests are underway and will be available Saturday.
Shortly after the launch of OS X 10.8 Mountain Lion, users of portable Macs began to report significant reductions in their battery life on Cupertino’s latest cat. Reports varied, but independent testing showed a reduction of 20 to 30 percent in battery life on 10.8 compared to the same hardware on 10.7.
According to Ars Technica, as news of the battery life problem spread, Apple reportedly began contacting users affected by the issue and asked them to log system data for Apple’s review. Mountain Lion’s first update, OS X 10.8.1, was just around the corner, but Apple made no public mention of whether the data they were collecting was being used to fix the battery like Sony PCGA-BP1N battery , Sony PCGA-BP2NX battery , Sony PCGA-BP2NY battery , Sony PCGA-BP2R battery , Sony PCGA-BP2S battery , Sony PCGA-BP2T battery , Sony PCGA-BP2V battery , Sony PCGA-BP4V battery , sony PCGA-BP71 battery , sony VGP-BPL2 battery life issue in the update.
In the last few days, some developers began to report improvements in their battery life while using the most recent developer build of 10.8.1. “Until I installed 10.8.1, my MacBook was showing 4h:05m after a full charge,” a developer told software aggregation site Softpedia. “After installing 10.8.1 it’s showing over 8h.”
Apple released the final build of 10.8.1 Thursday morning, although the company cited nothing about battery life in the update’s release notes. Now that we’re armed with several builds to compare, we performed battery life benchmarks on OS X 10.7.4, 10.8, 10.8.1 Build 12B17 (the prerelease developer build), and 10.8.1 Build 12B19 (the final version released to the public).
Our testbed is a 2011 15-inch MacBook Pro 2.3 GHz i7 with 8 GB of RAM and 240 GB OWC SSD. The battery has 115 cycles and is considered by the battery health monitor to be in “Normal” condition. In other words, this is not a new machine; it’s seen decent use over the past year and, we hope, its condition is representative of that of a larger percentage of Mac owners than a brand new Mac.
That’s not to say we didn’t consider a new Mac, however. For the sake of a casual comparison, we’re also testing a new Retina MacBook Pro and a 2011 13-inch MacBook Air. We’ll have the results of those tests for you in the next few days.
Our battery life test was performed by using a custom Automator application under battery-saving conditions: the screen at 50 percent brightness, keyboard illumination off, and all applications and services disabled except for WiFi. To keep the Mac running throughout the test, we disabled system and display sleep in System Preferences, and deactivated the screen saver.