The M1 MacBook Air still outlasts the M2 and M3.

Yes, the M1 Air has the best real-world battery life of the three.

The M2 and M3 models have a slightly larger battery, but their bigger, brighter display and higher peak power draw eat into that. You’ll likely see an extra hour or two of light use on the M1 Air compared to the M2 or M3. Under heavy load the difference shrinks, but for everyday browsing and documents, the M1 just keeps going.

If battery life is your top priority, the M1 Air is still the champ.