Fault Phenomenon: Skyjack SJ3220 scissor lift aerial work platform white powder buildup on battery terminals, poor contact.

Troubleshooting Process:
– Checked terminals: terminals oxidized.
– Checked electrolyte: electrolyte overflow.
– Checked connections: connections loose.
– Checked environment: damp environment.

Root Cause: Electrolyte overflow from the battery or a damp environment caused terminal corrosion.

Required Parts: Battery terminal cleaning and anti-corrosion coating.