[NTLK] USBC Rechargeable MP2X00 Batttery

Apple Newton Fan newton at indigi.co.uk
Thu Aug 28 06:12:52 PDT 2025


Depend on the final price, but I would buy a few. 

I am happy to be your lab rat for beta tests. 

Please setup GitHub with photos and updates. 

Cheers 
Pawel

Sent from my Newton MessagePad 2100

> On 28 Aug 2025, at 13:17, Perley Mears <perley at mears.us> wrote:
> 
> I would be interested in a pack or two
> 
> Perley Mears
> perley at mears.us
> 
> 
>> On Thu, Aug 28, 2025 at 7:22 AM Elias Basse <kd5jfe at gmail.com> wrote:
>> 
>> After looking at what Matthias has done with his dock connector project it
>> has inspired me to work on a new USBC integrated battery to fill my need of
>> portable and charges anywhere.
>> 
>> It is entirely possible to integrate USBC recharging, voltage regulation
>> and new Lipo technology as well as powering from USBC in a 3d printed
>> battery shell.
>> 
>> I have begun revising the 3d printed battery holder already available on
>> GitHub to support a USBC connector and battery.
>> 
>> First question, is anyone beside myself interested in a project like this?
>> 
>> Second question, how much capacity would be enough?  Considering 2200mah is
>> pretty standard for my re celled NIMH packs, I am aiming for that capacity.
>> 
>> The whole theory is that a fully charged NIMH pack sits at about 5.4v and
>> there are power bank chips for USB power banks that could supply 5v or more
>> consistently for days from a foil pack cell as well as voltage and amperage
>> control (1.2a is the poly fuse rating I think) that I can get for 1-2
>> dollars on Amazon.  This bypasses the need to power and charge from the
>> Newton wall adaptor and it would think it's just an alkaline pack that is
>> always charged.  Adding some over current protection is a must.
>> 
>> Any thoughts?  Should I set up a GitHub or project page?  Or is this a
>> terrible idea?
>> 
>> Best Regards,
>> 
>> Elias
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