Battery Usage Breakdown – 7-Day Analysis

Something a little different than the typical battery post. Coming from someone who has previously owned Pros and is over the moon with the Air. I uploaded the weekly screenshots from the battery usage and had ChatGPT run some numbers and analysis to see what kind of real-world efficiency it’s getting..

Here’s the raw data pulled from the Battery Usage section:

Day	Battery Used	Screen Active	Screen Idle
Mon (9/29)	61%	4h 13m	4h 55m
Tue (9/30)	86%	5h 05m	3h 52m
Wed (10/1)	64%	5h 04m	1h 08m
Thu (10/2)	57%	4h 46m	1h 56m
Fri (10/3)	72%	6h 57m	1h 23m
Sat (10/4)	134%	9h 42m	3h 08m
Sun (10/5)	73%	5h 11m	4h 33m

Weekly averages:
• Battery used: 78% per day
• Screen active: 5h 51m (≈5.85h)
• Screen idle: 3h 08m (≈3.13h)

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Battery Efficiency Analysis

• Avg drain rate: 13.3% per hour of screen-on time
• Projected screen-on per 100% charge: ≈7.5 hours SoT
• Mixed-use battery life (screen + idle): ≈11.5 hours per full charge

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Observations

• Saturday (134%) → heavy-use outlier (multiple partial charges or long streaming)
• Thursday (57%) → most efficient day (nearly 5h SoT on just over half a charge)
• Friday (72%) → balanced use (~10% per SoT hour)
• Idle drain averaged ~1–2%/hr, meaning background usage is very low

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Summary

Usage Type	Estimated Battery Life
Light use (standby-heavy)	~14–16h total
Moderate/mixed use	~11–12h total
Heavy use (constant SoT)	~7–8h SoT
Max efficiency	~7.5h SoT per full charge