Fault Phenomenon: Haulotte HA12LE articulating boom aerial work platform the battery connector is blackened and melted, with a burning smell.

Troubleshooting Process:
– Checked connection tightness: bolts loose.
– Checked contact surface: severe oxidation.
– Checked current: excessive current.
– Checked material: poor connector material.

Root Cause: The battery connector bolts were loose, causing excessive contact resistance and overheating under high current.

Required Parts: Battery connector assembly and harness repair.