ProNautic 1240P 12V/40A: High-Output Charging for Demanding Marine Systems

The ProMariner 63140 ProNautic 1240P 12V/40A 3-Bank Battery Charger is designed for vessels with higher onboard power demands and multiple battery banks. Built on a digital performance platform, this promariner battery charger delivers precise, efficient charging while supporting modern marine electrical systems.

Engineered for reliability and long service life, the ProNautic 1240P combines software-based power conversion, advanced energy management, and wide battery compatibility in a compact dry-mount design.

👉 Product page: https://www.12voltpower.com/product/promariner-63140-pronautic-1240p-charger/

Designed for Multi-Bank Power Systems

The ProNautic 1240P features three independently managed charging banks, allowing it to support starting, house, and auxiliary batteries simultaneously. With a total output of 40 amps, it provides the capacity required for boats equipped with expanded DC loads and onboard electronics.

Each bank is monitored and controlled automatically, eliminating manual configuration and ensuring balanced charging across the system.

Distributed-On-Demand™ Charging Technology

Distributed-On-Demand™ Technology intelligently senses battery demand and allocates available charging current where it is needed most. This allows the charger to deliver up to full output to a single bank or distribute power across all three banks as required.

This adaptive approach improves charging efficiency and shortens overall charge time.

Digital Charging Performance with 12 Selectable Profiles

This promariner marine battery charger provides up to twelve digitally controlled, precision four-stage charging profiles. Charging stages include Charge, Condition, Auto-Maintain, and Recondition.

Supported battery chemistries include:

• LiFePO4 lithium
• Flooded lead-acid
• AGM
• GEL

The unit is factory-set for sealed batteries, with simple selection for other chemistries when needed.

Global AC Input with Power Factor Correction

The ProNautic 1240P is designed for worldwide operation, featuring auto-ranging global AC input from 100–240V at 50/60Hz. Integrated Power Factor Correction reduces harmonic distortion and improves efficiency, allowing more usable AC power onboard while drawing less from shore power or generators.

Conservation Energy Saver Mode

After batteries are fully charged and conditioned, the charger automatically enters Conservation Energy Saver Mode. In this mode, it continuously monitors battery status and maintains charge only when required, reducing unnecessary AC power consumption and preserving reserve power during dockside or storage periods.

Digital Diagnostics and Battery Health Protection

Advanced digital intelligence enables:

• Self-test diagnostics
• Real-time voltage and amperage monitoring
• Discreet fault indication
• Automatic monthly storage reconditioning after extended Auto-Maintain operation

These features help extend battery life and identify system issues early.

Quiet Operation with Intelligent Cooling

Automatic fan speed control ensures quiet operation, while the front-exhaust cooling design prevents airflow restriction and maintains efficient heat dissipation without excessive noise.

Temperature Compensation and Built-In Safety

The charger includes automatic temperature compensation, an included remote temperature probe, ignition protection, and current limiting. It is built to meet demanding marine standards including Marine ULc 1236, CE, FCC Class B, and CEC.

Optional Remote Control and Display

The ProNautic 1240P supports the optional ProMariner 63100 Remote Control and Display, allowing convenient remote monitoring of charging status, diagnostics, and system performance.

Compact, Durable, and Marine-Ready

Specifications:

• System Voltage: 12V
• Output: 40A total / 3 banks
• Weight: 6.95 lbs
• Dry-mount design for flexible installation

Backed by a 5-year warranty, this promariner charger is built for long-term reliability in demanding marine environments.