QA450B 84V 5A Fast Lithium Battery Charger (110V US Plug)

The QA450B 84V 5A Fast Lithium Battery Charger delivers rapid, safe, and highly efficient charging for high-performance electric bikes equipped with 72V (20S) lithium-ion battery packs. Engineered with advanced switch-mode architecture, it achieves an impressive 93% efficiency to minimize energy loss, reduce heat, and safeguard long-term battery health.

Key Features

• High-Efficiency Fast Charging: Delivers consistent 5A output at 84V with up to 93% conversion efficiency for rapid turnaround times.
• Intelligent Thermal Management: Integrated quiet cooling fan and aluminum heat dissipation design maintain optimal operating temperatures during extended charge cycles.
• Comprehensive Safety Protection: Built-in protections against over-voltage, over-current, short circuit, and reverse polarity safeguard your battery pack.
• Durable & Portable: Rugged, shop-ready enclosure weighing just 1.4 kg, suitable for both garage and trackside charging.

Technical Specifications

• Model: QA450B
• Compatible Battery: 72V (20S) Lithium-ion (84V full charge cutoff)
• AC Input: 100–120VAC, 5.5A Max, 50/60Hz (Standard US AC Plug)
• DC Output: 84V / 5A (CC/CV charging profile)
• Conversion Efficiency: ≥93%
• Product Weight: 1.4 kg (3.08 lbs)