any electric forklift mechanics/experts in the house?

[Drcemento]

our trusty Hyster E35 wont move this morning. yesterday we charged it up, topped off the battery water and I spent some time with baking soda and water to clean up the corrosion which was really getting bad. finished up and it fired right up - moved it to its parking spot and left

This morning I went to use it and the LED display fired up but instead of going to show the battery level it stayed at dashed lines across the board and the wrench light is blinking.
battery shows read 37.6 volts on multimeter at plug buttons on readout will not let me navigate the display

I did notice that I do not hear a click from the seat weight sensor - though I checked cord with mulitmeter and it seems to function when someone sits on it... could that be it?
any other Ideas/things to check?

[glaman5266]

Not an expert so maybe not helpful, but I'll throw some stuff out there-

Was it sitting outside overnight or in a damp environment? Could condensation be an issue?
Did you get water in any other place when you topped off the battery water?
Just to make sure of the battery cables, maybe remove them from the terminals & re-attach them?
Is something up with the physical plug going into the battery?

We had this happen with a fork at my old workplace. If I remember what it was I'll chime back in.

[Drcemento]

it wasnt outside, though I did just hose the baking soda muck off the battery and blow it off with air. it did drip slowly out of the battery pan all night. I did not get water in or near any of the controls in forward of the battery area

all terminal connections are tight as hell with no visible corrosion issues, and I get 37 volts read at the power cord coming out of the battery indication foll charge and no continuity issues. clearly its powering up which makes me think some sensor somewhere is not happy.

[Melrosejedi]

There are sometimes electrical motors under the battery tray that may have got wet. To clean a battery,always remove from the vehicle.hopefully this may dry out and come back online.

[Drcemento]

welp - MCB for the win! Melrosejedi lesson learned - remove battery! forklift had a 5 day nap but fired right up on monday. something must have gotten wet that shouldn't

[Melrosejedi]

Glad to hear.