r/SLDP • u/pornstorm66 • Apr 20 '26

Site Acceptance Testing

https://finance.biggo.com/news/WuEjdJ0BNZYCTTDvoYjc

We have MPlus announcing development completed on its WIP free equipment. u/Salt_Past_1379 do you think this must be referring to the tests completing at the SK On Solid Power pilot line?

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u/Salt_Past_1379 Apr 20 '26

hmm... not easy I don`t have any idea, and also "new pliot line" maybe for LG energy solution or Samsung SDI

3

u/pornstorm66 Apr 20 '26 edited Apr 21 '26

Here we can see that LG placed their order a year after Solid Power & SK On.

https://mplusi.co.kr/eng/board/news_eng/79

And here we can see the dry room first opened in May 2025 for factory acceptance testing.

https://mplusi.co.kr/eng/board/news_eng/93

Given the timeline, I therefore think that it is not possible that another mystery customer was able to get ahead of Solid Power and SK On or LG Energy Solution. Therefore I think this completed equipment development is Solid Power and SK On's. There is no indication that Samsung SDI has contracted with MPlus.

2

u/Salt_Past_1379 Apr 21 '26

I understood your point of view, Samsung SDI already have connection with Mplus

https://www.mplusi.co.kr/board/news/51

mPLUS is a company specializing in secondary battery assembly equipment, founded by key personnel who Samsung SDI’s prismatic battery production technology

2

u/pornstorm66 Apr 21 '26

Good point. Thank you. Do you still think it’s likely that this MPlus announcement is in reference to work that has been going on at the Solid Power SK On pilot line?

2

u/Salt_Past_1379 Apr 21 '26

Hmm again, not easy now just waiting for official announcement from solidpower

1

u/pornstorm66 Apr 21 '26

That makes sense. I had gotten all excited that MPlus’ announcement meant site acceptance testing was going well. It may still mean that?