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Macintosh 128k/512k/Plus battery socket drop-in replacement
Posted by: daanvdl on 2023-12-29 04:34:00
Dear friends,

Just for those who are interested;
I designed a low cost 3D-printable drop-in replacement for the "CAPETRONIC DS 1011"/"815-0727-B" batteryholder for the Macintosh 128k/512k/Plus.
This replacement batterysocket is based on a 14500 (AA-size) 3.7V rechargeable battery which is enough to keep the clock running and save the PRAM settings.

https://github.com/daanvdl/macplus_battery_socket

Have fun!

Regards,
Daan

front1.jpg
Posted by: LaPorta on 2023-12-29 05:53:32
Comes with metal tabs? I'd totally be interested.
Posted by: daanvdl on 2023-12-29 08:11:22
Comes with metal tabs? I'd totally be interested.
Yes. See the GIT readme for the building manual. When I have more time (beginning next year) I will may sell them pre-assembled. Do you think this will be an addition to the community?
Posted by: cheesestraws on 2023-12-29 08:27:31
I said this in your other thread, but well done. I think this kind of thing is decidedly handy - there's been lots of eyes on logic boards, but in this generation of machines it's really the AB that's more fragile, so work on the AB is great.
Posted by: 68kPlus on 2023-12-29 14:19:25
I've been wanting something like this for ages! Thank you kind sir.
Definitely let me know if you start selling them pre-assembled!
Posted by: pezter22 on 2024-01-04 17:37:17
Wow this is great. My 512k suffered some damage from a leaky battery. Thank you.
Posted by: daanvdl on 2024-02-16 12:24:15
I've been wanting something like this for ages! Thank you kind sir.
Definitely let me know if you start selling them pre-assembled!
Hi 68kPlus,

I went a step further and created a design that supports both 3.7V 14500 and 1.5V Alkaline/Lithium batteries. Using a small custom voltage regulator the output voltage remains 4.5V (which is the original battery voltage), regardless of the battery type (1.5V -> 4.5V)
I there is a 'regulator on/off' switch so you can bypass the regulator if wanted.
I still have to settle all the matters, but I will put some of them up for sale soon.

IMG_7439.jpg
Posted by: LaPorta on 2024-02-16 13:21:14
Definitely want to order!! Thank you!
Posted by: 68kPlus on 2024-02-17 03:41:09
Amazing! Will get one too!! I have two Macs which need one, Plus and 512K.
Posted by: Crutch on 2024-02-17 06:28:52
This is super cool - following this thread!
Posted by: daanvdl on 2024-02-17 08:32:30
Posted by: 68kPlus on 2024-02-18 13:02:52
Rip no AU shipping. It would be a little expensive total then, however
Posted by: daanvdl on 2024-02-18 13:51:06
Rip no AU shipping. It would be a little expensive total then, however
Will check tomorrow. A quick check is saying me that shipping “to the other side of the world” will be around 15€
Posted by: 68kPlus on 2024-02-18 13:54:06
Will check tomorrow. A quick check is saying me that shipping “to the other side of the world” will be around 15€
$66AUD total, not including GST. I might as well print and build my own, which might be a good idea. You should sell a DIY kit (print files, instructions) too!
Posted by: alexGS on 2024-02-22 11:09:24
$66AUD total, not including GST. I might as well print and build my own, which might be a good idea. You should sell a DIY kit (print files, instructions) too!
I’m in NZ and I’ve been working on something similar, I use 3D-printing to solve lots of problems like this. I made a battery for the Powerbook 100 that uses CAT5-wires (the stripped wires from the cable) to thread through holes in springy parts of the design. So, you can join the dots on what I was thinking - but feel free to make yours first 🙂 I think Printables might be a good place to share designs at a low price…
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