Re: Tek 222/224 Battery Replacement

Miguel Work

Well done!

But if you know how to make a lithium charger, your will know how to modify the 222 to work directly with lithium batteries :)


-----Mensaje original-----
De: [] En nombre de Dave Voorhis
Enviado el: jueves, 26 de marzo de 2020 19:14
Asunto: Re: [TekScopes] Tek 222/224 Battery Replacement

On 26 Mar 2020, at 17:02, Jeff Davis <n0dyjeff@...> wrote:

Hi all,

One of my customers approached me a few weeks ago about a project to replace the sealed lead acid battery (now unobtainium) in Tek 222/224 scopes with lithium ion cells that presumably will continue to be available for the foreseeable future. He pointed me to a really well done project with a public domain license. There's a YouTube video on it -

After a couple of weeks of capturing schematics, sourcing parts, etc. I'm about ready to hit Send on an order for the PCBs. Before I do that, however, I wanted to check with the community to see if there's sufficient interest to order more than the minimum quantity of boards.

How about it, Tek 222/224 collectors? Any interest in a battery pack replacement based on the design in the YouTube video above?

Jeff / N0DY
Definitely interested. I bought a 222 to add to my collection, but it’s turned out to be surprisingly useful. I’d like to replace the dud lead-acid battery but the usual replacements involve cutting the case, which I’m reluctant to do. I think the YouTube video approach doesn’t cut the case?

I didn’t watch the whole thing, admittedly.

Either way, I’m definitely interested in a board. I’m in the UK, so I don’t know if shipping might be an issue though I guess a board should fit in an envelope.

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