The GX4820 is the next-generation, high-frequency switch-mode charger engineered for demanding industrial and commercial applications-from golf carts and pallet jacks to scissor lifts and floor-care machines. Delivering up to 92 % conversion efficiency in a compact IP66-rated aluminium unibody enclosure, it combines rugged durability with advanced microcomputer-controlled charging algorithms for rapid, safe, and intelligent battery maintenance and recovery.

Key Features

• Ultra-High Efficiency: 92 % energy conversion minimises heat and maximises charge speed.
• Multiple Charge Modes: One-button selection for Norm, Cold/AGM, AGM⁺, Lithium, Repair, Supply, Maintenance Plus, Optimization, Inhibit and Opportunity Charging.
• Universal Input & Cables: Wide 100-240 VAC, 50-60 Hz input with hot-swappable AC/DC leads for global compatibility.
• Battery Chemistry Support: Deep-cycle Wet Cell, Gel, EFB, AGM, Calcium, Lead-Crystal and Li-ion (including LiFePO₄ with BMS) up to 425 Ah.
• IP66-Rated Construction: Water-jet and dust-tight design with over-moulded strain reliefs and shock-vibration-resistant housing.
• Advanced Safety: Spark-proof connectors, reverse-polarity, over-current/short-circuit, over-temperature and firewall protection.
• Inhibit Function: Disables vehicle motion during charging via a 20 A relay, preventing accidental runaways.
• Repair & Recovery: High-voltage, low-current pulses to melt and remove sulfate buildup, restoring lost battery capacity.
• Supply & Opportunity Charging: Converts into a constant-current/constant-voltage power supply for zero-voltage "wake-up" or intermittent top-ups during breaks.
• Maintenance Plus & Optimization: 24-hour finishing charge cycles and gravity-stabilising routines to prolong battery life.
• Advanced Diagnostics: Flash-pattern and LED fault codes quickly identify battery issues for professional servicing.
• 1-Year Warranty: Backed by NOCO's industry-leading support and global distributor network.