AKAI EWI5000 Almost Unused

This is an AKAI Professional EWI5000.
I bought it as a saxophonist inspired by T-Square, but I couldn't master it...
It's been stored with only power on, almost unused (to prevent complete discharge which would require sending it back to the manufacturer).

I'm selling it as part of decluttering.
It's a great instrument, so I recommend it to someone who can master it.
A spare battery is also included.