Posted 18 May 2017 Hello All, I have been tasked with sourcing some spare parts for a cabinet housing Siemens S5 PLC's. I have managed to source all of the CPU's, output cards, input cards, EPROM etc, I am currently trying to find a back up battery for the CPU. CPU part number is 6ES5 100-8MA02. According to the labeling on the CPU I require a 3.4v 850mAh battery. I think the part number for the battery is 6ES5 980-0MA11. This is proving difficult to source. Does anyone know where I can find one, or can I use an alternative, i.e a 3.6v? Thanks Share this post Link to post Share on other sites
Posted 18 May 2017 They don't do 3.4v unfortunately Share this post Link to post Share on other sites
Posted 18 May 2017 (edited) Then try your local Siemens distributor. They should be able to order it for you. Rodney Edited 18 May 2017 by Rodney Share this post Link to post Share on other sites
Posted 18 May 2017 (edited) RS Components https://uk.rs-online.com/mobile/p/speciality-size-batteries/0596589/ https://support.industry.siemens.com/cs/document/7379933/which-backup-batteries-can-you-use-in-a-simatic-s5?lc=en-ww&dti=0 Edited 18 May 2017 by Moggie 1 person likes this Share this post Link to post Share on other sites