Uploaded June 2026 | Updated September 2026, 1 week ago

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In this video, I describe two methods for making new battery packs for the Tektronix 222/224 series portable digital oscilloscopes. I also show four experiments I did for coming up with suitable replacement plug connector cables for use between the new battery packs and the oscilloscope. This video is NOT about the 'scope itself, and includes only a brief demonstration of it.

Timeline Table of Contents:
00:00 Introduction
03:25 Kitsune-Denshi battery pack using 3x Li-ion cells (* see below)
38:26 Kitsune-Denshi battery pack-schematic diagram and circuit theory
1:17:30 Cable using Molex connector (unsuccessful)
1:23:25 Cable using Adafruit jumpers
1:30:34 Cable using "JST VH" extension cable from Amazon
1:36:12 Cable using Samtec contacts & 3D printed housing
1:44:40 Ni-MH battery pack

* This video also includes an overview and demonstration of a good digital microscope (Andonstar AD249S-M Plus) that I bought specifically to facilitate assembly of the tiny surface-mount components on the circuit board of the Kitsune-Denshi battery pack.