shoprNo offense, but are you one of those people that turn off Bluetooth in their phones because it drains the battery? And no, you can't upgrade anything on this laptop; it's all soldered.
shoprI'd love to see the numbers to back that up that 4GB of memory is demonstrably better for battery life than 8GB or 16GB. If anything, I'd guess that having too little RAM would cause your computer to tap into virtual memory (heavy usage of the SSD and increased CPU utilization) which would actually hurt battery life.
iatsbohdanAre you unfamiliar with the rampant speculation that having radio broadcasting from your immediate vicinity 24/7 causes cancer? The immune system needs at least 16% downtown to repair the domage.