Yokogawa DL1540C Lithium Backup Battery - Page 1
Forum section: electronics / repair

author: davorin
author_rank: Unknown
timestamp: December 11, 2021, 11:14:30 am
content: 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?

author: davorin
author_rank: Unknown
timestamp: December 11, 2021, 11:33:26 am
content: 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 -> BoardWorks now with 2 * AAA batteries (o;

author: Per Hansson
author_rank: Unknown
timestamp: December 11, 2021, 02:16:46 pm
content: The name of the battery type is 1/2AAHere is just one example:https://www.elfa.se/en/primary-battery-6v-2aa-lithium-tadiran-batteries-sl-350-pt/p/16932064

author: davorin
author_rank: Unknown
timestamp: December 11, 2021, 02:22:15 pm
content: 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 ;-)

author: TERRA Operative
author_rank: Super Contributor
timestamp: December 11, 2021, 02:40:06 pm
content: Yokogawa, being a Japanese company meansI 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.pdfSometimes 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.

author: factory
author_rank: Super Contributor
timestamp: December 11, 2021, 03:29:56 pm
content: Quote from: davorin on December 11, 2021, 02:22:15 pmI 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

author: Ice-Tea
author_rank: Super Contributor
timestamp: December 11, 2021, 03:45:47 pm
content: Bought some of those from farnell some time ago:https://bit.ly/3oKxFjR

author: Per Hansson
author_rank: Unknown
timestamp: December 11, 2021, 03:47:31 pm
content: Quote from: davorin on December 11, 2021, 02:22:15 pmSwiss? 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.

author: davorin
author_rank: Unknown
timestamp: December 11, 2021, 04:43:54 pm
content: 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 ;-)