SNES Super Wild Card SRAM Problem

[Gaibon]

Hi!

I have a Super Wild Card SMS3201 16M, at least the case says so. It seams its upgraded to 32M, and the board inside says Super Magicom Plus. Anyhow the problem is that it doesn't hold saves. I have replace the battery but it did not do any differences. I was thinking it might be some problem with the SRAM chip, I'm not sure where the SRAM is (HM62256LFP-10T)?, i took a picture of the board.

Can i reroute the battery directly to the SRAM-chip to be sure its getting power, or is it something else i can check?