Wii Fit Board Battery Acid Damage

I got an itch to bust out the old Wii after several years and saw some of my stuff had battery acid damage. I was able to clean the Wiimotes and they work perfectly, but my WiiFit board had a lot of damage.

Is this fixable for should I chuck it? For reference I used 91% alcohol to clean my Wiimotes with cotton swabs and a toothbrush