Yokogawa DL1540C Lithium Backup Battery

[davorin]

Good morning (o;

Just reorganizing my electronic lab and suddenly discovered when I powered on again my DL1540C scope that it throws now an error message saying the lithium battery is dry:

Tried replacing it with two regular AAA batteries giving around 3.2V instead of 3.6V from the Toshiba ER3V battery...but still complains.
Also haven't found a replacement battery with either the same footprint...and if they have the same footprint the voltage is 3.0V only....

Any other ideas for replacing the ER3V lithium battery?

[davorin]

Okay..tested with an external power supply set to 3.6V....

The DL1540C still complains about the failed lithium battery....
I guess there must be a trick then to reset this error message....


Update: Got it.....Misc -> SelfTest -> Board

Works now with 2 * AAA batteries (o;

[Per Hansson]

The name of the battery type is 1/2AA
Here is just one example:
https://www.elfa.se/en/primary-battery-6v-2aa-lithium-tadiran-batteries-sl-350-pt/p/16932064

[davorin]

Ah great, thanks :-)

Wasn't aware the Swiss company extended its business to Sweden (o;


Just have to find out which capacitors causes an ugly smell.....similar to those yellow capacitors in the old Grundig TVs in the 80s....
It's a nightmare to take apart the DL1540C ;-)

[TERRA Operative]

Yokogawa, being a Japanese company means I can get these exact batteries off the shelf in Akihabara. It's a Toshiba brand Lithium-thionyl Chloride battery.
Shipping would be interesting though, but any Lithium-thionyl Chloride battery of the same voltage would do the job just fine.

Here's a datasheet for this series of batteries: http://www.gracesemicon.com/pdfs/ER_Catalog_2017.pdf

Sometimes I get a bigger one on flyleads and cable tie it somewhere convenient, usually away from the PCB to help prevent potential leaky battery damage.

[factory]

Ah great, thanks :-)

Wasn't aware the Swiss company extended its business to Sweden (o;


Just have to find out which capacitors causes an ugly smell.....similar to those yellow capacitors in the old Grundig TVs in the 80s....
It's a nightmare to take apart the DL1540C ;-)

I remember seeing how difficult these are to take apart in this video, oddly the older DL1520 at work had a dead battery but didn't bring up any error message, now i know why calibration never bothered to do anything about it either.


David

[Ice-Tea]

Bought some of those from farnell some time ago:

https://bit.ly/3oKxFjR

[Per Hansson]

Ah great, thanks :-)

Wasn't aware the Swiss company extended its business to Sweden (o;

Swiss? Their main office in located in Stockholm.
It used to be a really big Swedish distributor, but then they sold out and moved the warehouse abroad, damn shame that was but I digress.

[davorin]

Well Distrelec is an old Swiss company belonging to the big Daetwyler group.....but then again...not important...

Just good here they have the same battery on stock ;-)