NOCO GEN5X3 3-Bank 15A Marine Battery Charger & Maintainer

Product Description

NOCO GEN5X3 3 Bank Battery Charger & Maintainer

The NOCO Genius GEN5X3 is a compact, waterproof onboard battery charger designed for 3-bank 12V battery systems across marine, RV, automotive, and powersports applications. This smart battery charger and maintainer delivers up to 15 amps (5A per bank) with individually selectable profiles for Lead-Acid (Wet, AGM, Gel, EFB, MF) and Lithium (including LiFePO4 with BMS). With IP68 sealing and a simplified mounting system, it’s ideal as an onboard boat battery charger for bilge and engine compartments. Informative charging LEDs ensure user-friendly operation, while advanced diagnostics and temperature compensation enhance safety. Backed by NOCO Genius engineering, the GEN5X3 provides reliable, automatic battery charging and maintenance for season-long confidence.

Features & Benefits

• Smart Automatic Charging – Optimizes charge time and improves battery health with chemistry-specific control.
• Individual Bank Control - Each bank can be charging a different battery type at the same time.
• Automatic Battery Maintainer – Safe for long-term connection with zero overcharge.
• Lithium Mode – Supports 12V lithium-ion and LiFePO4 batteries with BMS for safe, fast charging.
• Low-Voltage Recovery – Recovers deeply discharged batteries, even down to zero volts with Force Mode.
• Integrated Thermal Sensor – Adjusts charging in heat or cold to prevent over or undercharging.
• IP68 Waterproof Construction – Withstands marine environments and other wet applications.
• Low-Profile Design – Conveniently mount onboard for clean installs in tight spaces.
• Protections – Spark-proof, reverse-polarity, over-voltage, over-heat, short/open-circuit with status indicators.

Smart Battery Charger and Maintainer

The GEN5X3 uses a smart, multi-stage algorithm that brings the battery up efficiently (bulk), completes the charge without stress (absorption), and then maintains it safely for storage (maintenance/float behavior). Selectable modes for each bank tailor voltage and behavior for 12V Lead-Acid (Wet, AGM, Gel, EFB, MF) and 12V Lithium (LiFePO4) batteries with an internal BMS. An integrated thermal sensor compensates for ambient temperature and adjust target charging voltage accordingly. The charger can detect as low as ~1V, and with Force Mode, you can initiate a charge cycle from zero volts when appropriate. For long-term storage, its automatic maintainer function supports 24/7 connections.

Why Choose a NOCO Battery Charger?

NOCO Genius battery chargers deliver smart, reliable charging designed to protect and extend the life of your batteries. Using advanced multi-stage charging technology, NOCO chargers automatically adjust power output to safely charge and maintain AGM, flooded, gel, and lithium batteries without the risk of overcharging or damage. Their rugged, compact designs and intuitive operation make them ideal for motorcycles, ATVs, cars, trucks, marine applications, and seasonal equipment. Built for durability and trusted by professionals and enthusiasts alike, NOCO chargers provide fast recovery of depleted batteries, long-term maintenance for stored vehicles, and dependable performance that keeps your batteries ready whenever you need them.

NOCO Genius GEN5X3 Manual

NOCO Genius GEN5X3 Datasheet

What's In the Box

• NOCO Genius GEN5X3 Onboard Marine Battery Charger
• 6' Charging Cables with M10 Eyelets
• 6' A/C Power Cord
• (2) Self-Tapping Screws
• User Guide & Warranty Information