How to Replace Batteries on LGMG Scissor Lifts

LGMG Battery Replacement Overview

LGMG scissor lifts utilize high-capacity lead-acid or lithium battery packs. This guide covers the safe removal and installation of battery packs on LGMG AS-series electric scissor lifts.

Warning: Battery replacement involves heavy components and electrical hazards. Follow all safety procedures and use proper lifting equipment.

Required Tools and Materials

• Battery lifting beam or spreader bar rated for battery weight
• Overhead crane or forklift with sufficient capacity
• Insulated wrenches (5/8" for lead-acid, varies for lithium)
• Torque wrench
• Dielectric grease
• Personal protective equipment (safety glasses, gloves, steel-toe boots)

Safety Precautions

Before beginning:

1. Lower platform to transport position
2. Turn key switch to OFF and remove key
3. Engage emergency stop
4. Disconnect external charging cable
5. Allow batteries to cool if recently charged
6. Verify no load on platform

Critical: On lithium battery systems, follow lockout/tagout procedures and wait 5 minutes after power-off before working on connections.

Step-by-Step Removal Process

Step 1: Access the Battery Compartment

LGMG scissor lifts feature a side-access battery compartment. Remove the compartment door by:

• Removing retention pins or fasteners
• Sliding door out of guide rails
• Set aside in safe location

Step 2: Document Wire Connections

Before disconnecting:

• Photograph all wire connections
• Note wire colors and terminal positions
• Label any unmarked wires

Step 3: Disconnect Battery Cables

• Always disconnect NEGATIVE cable first
• Then disconnect POSITIVE cable
• Stow cables away from battery terminals
• Cap exposed terminals if available

Step 4: Remove Battery Retainer

The battery pack is secured by a hold-down bracket:

• Remove bracket fasteners (typically 4 bolts)
• Lift bracket clear
• Inspect bracket condition, replace if damaged

Step 5: Extract Battery Pack

• Attach lifting beam to battery lifting eyes
• Take up slack in crane/forklift chains
• Verify battery is free to move
• Lift slowly and smoothly
• Guide battery out of compartment

Installation Process

Step 1: Prepare New Battery

• Verify battery specifications match original
• Check electrolyte levels (lead-acid)
• Clean terminal surfaces
• Apply dielectric grease to terminals

Step 2: Position Battery

• Lower battery into compartment slowly
• Align with mounting position
• Verify battery sits level
• Ensure adequate clearance for cables

Step 3: Install Battery Retainer

• Position hold-down bracket
• Install fasteners hand-tight first
• Torque to 25-30 ft-lbs in cross pattern

Step 4: Connect Battery Cables

• Connect POSITIVE cable first
• Then connect NEGATIVE cable
• Torque cable terminals to 15-20 ft-lbs
• Apply terminal protector spray

Step 5: Verify Installation

• Double-check all connections
• Reinstall compartment door
• Clear emergency stop
• Turn key ON and verify:
  • Battery level indicator reads correct
  • No fault codes present
  • All functions operate

Post-Installation Checklist

After battery replacement:

• Fully charge before operation
• Monitor charging temperature first cycle
• Document battery information (date, supplier, specifications)
• Properly dispose of old batteries per regulations

Troubleshooting Installation Issues

Machine won't power on:

• Verify emergency stop is released
• Check main fuse
• Confirm correct polarity on connections

Battery indicator reads incorrectly:

• Some systems require BMS reset
• Consult service manual for calibration procedure

Charger won't engage:

• Check charger interlock circuit
• Verify battery temperature is within range