[NTLK] USBC Rechargeable MP2X00 Batttery

Elias Basse kd5jfe at gmail.com
Fri Sep 5 20:44:10 PDT 2025


Just an update on the battery pack project.

I have had success in powering the Newton with a lipo cell and the board
that I have found.

 I have also had a setback where when plugging in the USBC the board takes
approximately 1 second to switch from input to output on the board.  This
causes the newton to give the dreaded battery removed message.

I have a couple options that I am weighing on this:
1) Change to a different board - Space is at a premium
2) Install a 5v supercapacitor (I have barely enough space) to cover the
brief power loss when connecting a USB charger, simple fix and costs a
couple extra dollars. This would be ok while the newton is "Off" or in
standby mode for you to switch power over.

I have also decided to get some 14500 batteries and model these in
parallel, however this will take a bit more time from amazon.

The design I am currently working on from scratch is a 3d printed battery
that will be in two halves that will snap (and later glue) together into a
single battery pack which is seamless.  I am still working on design as I
have basically had to design the battery pack from scratch.  My cad skills
are ok, but I'm still learning.

While waiting on parts, I am compiling a project for PPP to WiFi using an
ESP-32, a TTL/232 Serial converter, and some dodgy wiring to bring wifi to
the newton using serial from a dev board.  If this works well enough, I am
going to make a sled for it to fit in the newton and connect to the
internal port. (Or I can make this an external module smaller than the
original Newton modem).

All the best, and thank you all for the support.

Best Regards,
Elias


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