Courtesy AppleInsider, new filings by Apple in S. Korea show a battery that is similar to the Macbook Air - but smaller.
Compare to this image of the Retina Macbook Air's battery from iFixit:
The battery is 4,380 mAh, which puts it between the iPhone and the Macbook Air. Due to a presumably higher voltage, however, the watt-hours are identical to the current Air (49.9Wh) (and over triple the iPhone 11 Max).
The A14 is a likely candidate to drive the machine. The Air has a little more thermal capacity than the iPhone, some of which will be taken by its larger pool of LPDDR5 memory. Apple may use the rest to clock the (presumably) dual performance core A14 more aggressively, allowing both cores to run at or nearer to peak speed.
A four perf core part, similar to what is seen in iPad Pros, is also a good fit. The iPad 11 Pro drives its four perf core A12X with a 30 watt hour battery. The iDevices have smaller screens, some OLED, which they turn off aggressively. Macbooks don't share these luxuries, but the 49.9Wh battery should cover the difference.
Compare to this image of the Retina Macbook Air's battery from iFixit:
The battery is 4,380 mAh, which puts it between the iPhone and the Macbook Air. Due to a presumably higher voltage, however, the watt-hours are identical to the current Air (49.9Wh) (and over triple the iPhone 11 Max).
The A14 is a likely candidate to drive the machine. The Air has a little more thermal capacity than the iPhone, some of which will be taken by its larger pool of LPDDR5 memory. Apple may use the rest to clock the (presumably) dual performance core A14 more aggressively, allowing both cores to run at or nearer to peak speed.
A four perf core part, similar to what is seen in iPad Pros, is also a good fit. The iPad 11 Pro drives its four perf core A12X with a 30 watt hour battery. The iDevices have smaller screens, some OLED, which they turn off aggressively. Macbooks don't share these luxuries, but the 49.9Wh battery should cover the difference.