Guest On-Board Waterproof Battery Charger | 20A / 12V - 2 Bank (2720A)

The Guest 2720A is a high-performance, dual-bank on-board battery charger from the ChargePRO series. Delivering a total of 20 Amps of charging power—10 Amps per bank—this unit is the perfect solution for boats with a two-battery system, such as a dedicated starting battery and a single deep-cycle house battery, or a 24V trolling motor system.

Intelligent Digital Charging

Equipped with a fully automated, microprocessor-controlled 5-stage charging algorithm, the 2720A ensures your batteries are charged quickly and safely. By utilizing Sense-Send Technology, the charger independently monitors each bank and delivers the exact amount of current needed to reach a full charge without the risk of overcharging, which is critical for extending the lifespan of expensive AGM and Flooded batteries.

Key Features:

• Dual-Bank Dedicated Charging: Provides a full 10 Amps per bank, allowing for rapid recovery of deep-cycle batteries and precision maintenance of starting batteries.

• IP67 Waterproof Rating: The 100% waterproof and shockproof design is built to thrive in the harsh saltwater environment, featuring a rugged, potted housing that protects internal components.

• Energy Saver Mode: Once batteries are fully charged, the unit enters a monitor mode that significantly reduces power consumption while keeping the batteries topped off for your next trip.

• Universal Compatibility: Optimized for all 12V Flooded (Lead-Acid) and AGM batteries.

• Safety First: Includes integrated protection against reverse polarity, over-current, over-voltage, over-temperature, and ignition hazards (USCG Title 33 CFR 183.410 compliant).

• Easy-to-Read LEDs: Features dedicated LED indicators for each bank to show charging status (Red), conditioning (Amber), and ready/maintaining (Green).

• Compact Design: The lightweight, flangeless housing makes it easy to mount in compact storage compartments or engine rooms.

Technical Specifications:

• Model Number: 2720A

• Total Output: 20 Amps

• Output Per Bank: 10 Amps

• Banks: 2

• DC System Voltage: 12V or 24V configurations

• Input Voltage: 90–135V AC (50/60Hz)

• Dimensions: 7.5" x 8.7" x 2.4"

• Weight: 7.5 lbs

• Cables: Pre-wired 6' AC and DC cables with ring terminals and in-line fuses.

Why Choose the Guest 2720A?

The 2720A is the ideal upgrade for boaters moving up from a standard 5-amp "trickle" charger. With 10 amps per bank, you can recover a heavily discharged Group 31 battery in roughly half the time of entry-level chargers, making it the preferred choice for weekend tournament anglers who need a fast turnaround between days on the water

Installation Note:

For 24V trolling motor systems, you do not need to disconnect the jumper wire between your two 12V batteries. Simply connect one bank of the charger to Battery A and the second bank to Battery B. The Guest 2720A is designed to charge them independently even while they are wired in series.