---
title: "Truly Portable Computers"
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published_at: "2020-10-27T17:08:15+00:00"
modified_at: "2024-06-23T11:40:52+00:00"
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excerpt: "Letter to the editor from a Polaroid employee, suggesting the P100 Polapulse Powerpack as an alternative to SX-70 batteries for making a Timex/Sinclair portable."
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  - name: "Frederic Cohen"
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publication: "Computers & Electronics"
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  title: "Computers & Electronics"
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authors: "Frederic Cohen"
volume: "21"
issue: "10"
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    title: "Computers & Electronics (v21 n10)"
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pubdate: "October 1983"
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archiveurl: "http://www.americanradiohistory.com/Archive-Poptronics/80s/1983/CE-1983-10.pdf"
volumeissue: "v21n10"
---

# Truly Portable Computers

Letter to the editor from a Polaroid employee, suggesting the P100 Polapulse Powerpack as an alternative to SX-70 batteries for making a Timex/Sinclair portable.