COmpaq Portable 386 CMOS battery

[brain]

Side rant: You have to essentially disassemble the back of the unit and remove the motherboard to get to it! :-(

Anyway, I got to it.

It's a Eagle Picher LTC-16P-CO-F-S3

My Google-fu must not be up to snuff today. Can't find any mention of it online
When I search, I get references to LTC-16P-CO-F-S8

http://www.eastwonderus.com/UploadFiles/eaglepicher/lisocl2.pdf

The size matches (.7x.7x1.9) my unit.

But, when I go search for said unit, all I find are variations on the LTC-16P-CO-FS15 or B9593T, which is longer

https://www.battery2batteries.com/eternacell-b9593t-battery-3-6v-2600mah-lithium-cmos-memory-backup/
https://www.onesourcebatteries.com/tatl36vo21li.html?viewfullsite=1
https://batteryguy.com/generic+battery+ltc-16p-co-fs15-replacement-battery.html
http://www.batteryplex.com/lithium.cfm/m/B9593T
https://www.ebay.com/itm/PLC-Comput...ergy-B9593T-TL-5242-W-ER6K-486DX/392046217606

Looks like length is not a huge concern, all other dimensions being OK. There is room in the unit for the extra length.

But, before I pull the trigger on that, I thought I would ask, as I'll need to add a diode and resistor to anything I buy, and I was able to crack the little box open and I found a square lithium battery, with a small PCB that contains what looks like a diode with "F 5D" markings and a resistor with "102" on it (10 * 10^2, or 1K). It'd also be OK to source just the little square battery inside the box.

Thoughts appreciated.

Jim

 

[modem7]

Thoughts appreciated.

So what you have could be described as a 'battery module' rather than 'battery'.
Example diagram at [here].

I think the resistor is a form of protection, limiting current through the battery if somehow the module's contacts get shorted.

I guess, variations of these' modules' may differ in:
* Battery voltage
* Battery capacity
* Connector type
* Presence or not of diode
* Presence or not of resistor

 

[MissArgent]

I was able to swap in a AA holder with no issues, FWIW

 

[tuanies]

I was able to swap in a AA holder with no issues, FWIW

Are you using 2 or 3 AAs? Did you have to solder a diode or resistor with it or just directly?

 

[ScutBoy]

I just put a CR2032 holder in a convenient spot on mine. No resistor, etc.

 

[MissArgent]

Are you using 2 or 3 AAs? Did you have to solder a diode or resistor with it or just directly?

2xAA, just lopped off the connector from the old battery and soldered it to the leads on the holder, housing the holder on the rear of the machine with velcro.

 

[brain]

That's gonna be tough to do with the expansion system fitting there, but I understand. I have a unit on order, so we'll re-install in the normal place.

JIm