Apple · PowerBook

Macintosh PowerBook 145B

Released June 1993

The PowerBook 145B retained the 145's 25 MHz 68030 and monochrome screen while raising built-in RAM to 4 MB.

Size: 10″
Display: –
Processor: Motorola 68030 25 MHz (PowerBook 145B)
Memory: 4 MB
Weight: 3.1 kg
Battery: 3 h

Specifications

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Display

Screen size: 10″
Resolution: 640 × 400
Touchscreen: No
Display type: 10-inch backlit supertwist passive-matrix monochrome LCD at 640 × 400

Performance

Processor: Motorola 68030 25 MHz (PowerBook 145B)
CPU cores: 1
Memory: 4 MB
Storage: 40 MB to 80 MB
CPU: 25 MHz Motorola 68030 without a floating-point coprocessor
Memory type: 4 MB on the logic board, expandable to 8 MB with a memory card
Storage type: Internal SCSI hard drive; Apple's contemporary catalogue offered 40 or 80 MB with a built-in 1.4 MB Apple SuperDrive floppy drive

Battery and size

Battery life (maker's claim): Up to 3 hours
Weight: 3.1 kg
Thickness: 58 mm
Width × depth: 287 × 236 mm
Battery life detail: Removable nickel-cadmium battery; Apple stated an average 2.5–3 hours of operation

Connections

Operating system: macOS
Port detail: ADB, HDI-30 SCSI, two serial ports and audio input/output; optional internal modem; no video output
Trackpad: Built-in trackball
Speakers: Built-in speaker

Configurations

Processor	Memory	Storage
Motorola 68030 25 MHz (PowerBook 145B)	4 MB	40 MB
Motorola 68030 25 MHz (PowerBook 145B)	4 MB	80 MB

Pros and cons

Pros

4 MB RAM built in, expandable to 8 MB
Built-in floppy drive and SCSI port
Apple rated the battery at 2.5–3 hours

Cons

Monochrome passive-matrix screen
No external video output or built-in Ethernet
No floating-point coprocessor

Closest rivals

Model	Size	Display	Processor	Memory	Weight	Battery	Released
AppleMacintosh PowerBook 160	10″	–	Motorola 68030 25 MHz (PowerBook 160)	4 MB	3.1 kg	3 h	Oct 1992
AppleMacintosh PowerBook 180	10″	–	Motorola 68030 33 MHz (PowerBook 180)	4 MB	3.1 kg	3 h	Oct 1992
AppleMacintosh PowerBook 140	10″	–	68030 16 MHz (PowerBook 140)	2 MB – 4 MB	3.03 kg	3 h	Oct 1991

Sources

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