Hi, hoping someone can help me. I recently inherited a linde 18c-02 the serial number is H2X335K05977, it was laid up for a few years.
I can raise and lower the mast, tilt and side shift ok.
When I try to drive the truck forward or reverse it won't move but I don't see any error code.

The hand brake is down, the seat switch is working, I hear a tiny click when I press the forward pedal, when I press reverse the beeper is so loud I can't hear if there is a click or not.

The battery is on 2 bars flashing, waiting on a charger to arrive but I assume the truck should try to move even with 2 bars but asking for help or advice on this. Have I missed something fundamental that needs to happen before the truck can move?
Thanks