Another Question About Replacing Compaq Deskpro 5133 CMOS

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kiwibloke09

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#322886 3-Oct-2025 17:57

Gidday Everyone, I previously asked a question about how to replace Compaq Deskpro 5133 CMOS battery. I was told to soldier the two wires from a 3x AA Battery holder on to the pins for connecting a external CMOS battery on the motherboard (https://www.jaycar.co.nz/3-x-aa-side-by-side-flat-battery-holder/p/PH9274). I was wondering if it would be possible to instead tape the wires on the the pins using something like electrical tape (https://www.thewarehouse.co.nz/p/pomona-insulation-tape-pvc-electrical-18mm-x-20m-black/R1385797.html). As seen in the photo on the jaycar website, there is some exposed metal bit coming out of the wire, would i be able to just tape it to the correct pins using electrical tape instead of soldiering?

Cheers

giddy

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#3421213 3-Oct-2025 19:45

This might be fine for brief testing, but in my opinion it’s not a safe solution for anything other than brief testing.

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kiwibloke09

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#3421237 3-Oct-2025 20:52

Would using it as a solution be dangerous?

giddy

mentalinc

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#3421247 3-Oct-2025 21:08

The heat will warm the glue in the tape and it will come off.

You then have a random bit of wire floating around waiting to short something.

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kiwibloke09

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#3421251 3-Oct-2025 21:11

That makes lots of sense. Cheers mate

giddy

hsvhel

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#3421253 3-Oct-2025 21:23

Can you chuck up a pic of what your working with?

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kiwibloke09

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#3421579 4-Oct-2025 16:24

Yeah sure, I'll do that soon

giddy

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kiwibloke09

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#3421580 4-Oct-2025 16:38

Here is a pic of the same motherboard I found on the internet, if you want any close up then ill send closeups

giddy

mentalinc

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#3421605 4-Oct-2025 19:28

Dont you just replace the button/cell battery top left? Commonly found at PBtech and Mitre10 etc.

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#3421608 4-Oct-2025 19:58

mentalinc:

Dont you just replace the button/cell battery top left? Commonly found at PBtech and Mitre10 etc.

Original thread suggests lithium cell is soldered to mobo. https://www.geekzone.co.nz/forums.asp?forumid=50&topicid=322637

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#3421617 4-Oct-2025 20:56

It's unclear to me how much you have to work with. If I had to, stripped wire wrapped tightly around a post several times and then tightened against itself. I have used that method from time to time. I would not recommend it to someone with no dexterity or experience with wire. You could practice it with other wire and materials until you're ready. From your questions I have an impression you have done nothing like this before.

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#3421618 4-Oct-2025 20:58

This is interesting. Electrically conductive glue product. It is primarily intended to join twisted wire.

https://www.jaycar.co.nz/wire-glue-9ml/p/NM2831

I'm thinking it will not help much in your situation.

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#3421619 4-Oct-2025 21:04

I previously asked a question about how to replace Compaq Deskpro 5133 CMOS battery. I was told to soldier the two wires from a 3x AA Battery holder on to the pins for connecting a external CMOS battery on the motherboard

If someone has an idea where you can get pin connectors with wire already attached then it becomes a simpler wire joining problem instead of a wire to pin problem.

gzt

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#3421665 4-Oct-2025 21:14

Here's an idea you might get lucky with to joining wire to pin - warm the insulation to make it malleable then push the wire onto the pin. Wait for insulation to cool. Low current cmos that should be fine if you're lucky enough to have wire the right size.

hsvhel

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#3421669 4-Oct-2025 21:37

You OK with an iron?

Remove that caddy from the board and install a 3x 1.4 caddy with long wiring to move it to a suitable location?

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kiwibloke09

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#3424312 12-Oct-2025 12:12

Hello sorry for the late reply. I have never done anything like this EVER, and i really don't want to do any soldiering or iron or whatever on my own I don't want to mess it up so I'll prob just take it somewhere. But could i use the "Electrically conductive glue product" or would it just melt when the computer heats up when powered on?

giddy

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