New battery is in, it's not lithium so will have to change back some time.
Have tried 2 different sticks in D1, no joy, left it with just 1 stick.
So sata next, 2 of the connectors are under the overhang of the graphics card so that might be coming out later. I found the 4th sata drive, the cable goes under the mobo so there is obviously an ssd slot on that side of the case.