Battery life was excellent in our testing, at 11 hours 10 minutes, beating all comers, with the exception of the Samsung ATIV Book 9 (11:26) and last year's MacBook Pro (13:41). The 13-inch MacBook Pro comes in AU$1399 and AU$1698 configurations, with 2.3GHz Core i5 and 2.7GHz Core i7 dual-core CPUs, respectively. Our high-end AU$1698 Pro comes with a 500GB hard drive and I just upgraded form an early 2015 13" MBP to a 2020 13" 2020 MacBook Pro (i5 10th generation 512GB/16GB ram), and am getting 2-3 hours of battery life. The performance is actually worse than my 2015 model. Apple support told me that Chrome is the cause.
I tried, but Monterey and a third party NVME on an Early 2015 MacBook Pro causes battery drain in sleep mode. Also tried with installing first on original SSD to update the firmware and than installing on the Crucial P1 - nothing. Over night it looses more than 20% in eight hours. With the original one 0-1% only.
My problem is: MacBook Pro 13" early 2015 is not turning on and charging and the trackpad is also dead. Charger's LED does not shine by any light (red/orange/green) . But I tested my charger with another MacBook and charger is working. I tried to connect another charger. First 1-2 minute I can see green light and then LED turns off. In-depth review of the Apple MacBook 12 (Early 2016) (iPad Pro 12.9 NVMe) Apple MacBook Air 13 inch 2015-03 HD Graphics 6000, 5650U, the MacBook 12 proved its good battery life again. With If5SDS.
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  • macbook pro early 2015 battery life