Why is my girlfriend's 2017 MacBook air battery life so much better than my 2014 MacBook pro's (after just having brand new battery installed) when the batteries have the exact same device name (bq20z451)?
Format: her computer/my computer
Processor: 1.8GHz i5/2.2GHz i7
Full Charge Capacity (mAh): 6540/8230
Cycle count: 628/10
Device Name: bq20z451/bq20z451
Hers is notably better, maybe about 2x better. No, I'm not storing or editing insanely big video files. We both run code but haven't done much of that recently.
I calibrated my new battery and it helped but just not that much.
I dropped £199 on a new battery and I wanted an absolutely sick battery but I'm really disappointed in this. Yes it's better than it used to be but nothing like when I first got the machine.
Does my 2.2GHz i7 processor really drain it 2x faster? Why would it matter if neither of us is maxing out the CPU anyway? Maybe my bigger motherboard is more demanding even when idling but really is it bad enough to account for this drastic of a difference? Bluetooth is off in both cases.