[mananaysiempre]

This one has a lead acid battery in it (I’m guessing a sealed one), which I don’t expect to enhance its lap-friendliness.

What somewhat puzzles me about these early portables (also including e.g. the Macintosh Portable, sold 1989–1991, in a similar form factor) is the manufacturers’ insistence on putting a (heavy) mains transformer inside the chassis. That could not have helped the weight, so I have to guess they didn’t see it as a problem?..

[WillAdams]

There was a concern about folks losing the separate transformer, and a perception that a single device was better.

One interesting solution to this space was GRiD making their battery and power supply the same size and form-factor --- when one was working at a desk, to save space the battery could be removed and placed in a separate charger, while the cord from the power supply to the computer was removed, and it was then placed in the battery compartment and connected to the wall, powering the device.

[reaperducer]

What somewhat puzzles me about these early portables (also including e.g. the Macintosh Portable, sold 1989–1991, in a similar form factor) is the manufacturers’ insistence on putting a (heavy) mains transformer inside the chassis.

The transformer was outboard on this machine, like a modern computer. It had its own Velcro compartment in the carrying bag.