The $15,000 laptop that was too heavy to carry comfortably

Science · Published 1 November 2026 Swipe more like this →

In short: In 1989, Apple released the first battery-powered portable computer. It boasted a crisp active-matrix display and desktop performance, but it arrived with a literal weight problem: a massive lead–acid battery made it so bulky that critics called it a machine from the past before it even hit shelves.

The Macintosh Portable was born from a user demand for a 'laptop that doesn't strain your arms.' While third-party conversions existed in the late 1980s, they were often heavier than desktop units. Apple responded by engineering a machine that delivered high-end performance but weighed a staggering 16 pounds (7.3 kilograms). This bulk was primarily due to its lead–acid battery choice, which Apple preferred over the common nickel–cadmium batteries of the era because it avoided 'memory effects' and allowed for easier charge monitoring.

The hardware was technically ambitious but commercially difficult. It featured a built-in trackball that could be swapped for a numeric keypad and a custom Conner CP-3045 hard drive designed for low power consumption. However, the very features that made it premium—the active-matrix LCD and high performance—contributed to a price tag of $6,400 (roughly $16,600 in 2025). Despite favorable reviews for its image quality, the machine sold poorly, reaching only 10,000 units in its first quarter against a forecast of 50,000.

Development was plagued by delays. While prototypes date back to 1986 and production keyboards show dates from 1987, the computer didn't launch until September 1989. This two-year gap allowed competitors to move faster. Even when Apple introduced a backlit revision in 1991 to improve readability, the switch to cheaper 'pseudo-SRAM' halved the battery life. By October 1991, the Portable was discontinued, replaced by the PowerBook series as the industry moved toward lighter, more ergonomic designs.

A peculiar engineering quirk remains: the Macintosh Portable cannot boot without its battery pack installed because the AC adapter lacks sufficient power to start the hard disk. This highlights a design era where portability and 'desktop-class' power were in constant conflict, resulting in a machine that was technically revolutionary but physically impractical.

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