Pro Mariner 44021 ProSportHD 20 Plus 3-Bank Marine Battery Charger 20 Amp

The Pro Mariner 44021 ProSportHD 20 Plus is a waterproof 20-amp, 3-bank marine battery charger designed for demanding marine, RV, and powersports applications. This Generation 4 model features an innovative tri-surface heatsink design that is both lightweight and waterproof, delivering significantly faster charging through optimal cooling while delivering true rated constant current charging amps during charge mode.

Key Features:

• Enhanced microprocessor with digital features including fuel gauge style Charge Completion Monitor, Charge Mode LED bar, individual Fault indicators, and three digitally selectable performance charge profiles
• Fully automatic 5-stage charging: Analyzing, Charging, Conditioning, Auto Maintain (Energy Saver), and monthly storage recondition mode
• Distributed-On-Demand Technology distributes 100% of available charging amps to any battery or combination of batteries as needed
• Built-in safety features including dual inline waterproof fuses, reverse polarity, over-temperature, over-current, over-voltage, and ignition protection
• UL Marine 1236 Certified and meets DOE and CEC energy efficiency standards
• Up to 40% lighter compared to epoxy-filled chargers

Specifications:

• Output: 12V/24V/36V, 20 Amps total
• Input: 120V AC 50/60Hz
• Number of Banks: 3 independent charging outputs
• Recommended for Group 24-31 batteries; not for 4D or 8D group sizes
• Compatible with Flooded Lead-Acid, AGM, GEL, and approved LiFePO4 batteries
• Pre-wired with 6-foot AC and DC cables
• IP67 waterproof protection rating
• 3-year warranty

This three-bank charger can perform full charging during the boating season or maintain and store batteries over the winter, making it ideal for boats, RVs, ATVs, and other seasonal equipment. Built for harsh environments with industrial-grade jacketed DC and AC power cables featuring molded strain reliefs and wire splitters.