NOCO Genius GEN5X3: 3-Bank, 15A Onboard Battery Charger - 5A Per Bank, 12V Waterproof Marine Charger with Overcharge Protection & Temperature Compensation – for Lead-Acid & Lithium Batteries
Notify me when this product is back in stock
Buy Now, Pay Later
- – 6-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Recently Viewed
Size: 15A (5A per Bank)
Features
- MEET THE GEN5X3 37% smaller and 43% more powerful than the GENM3. Its our most compact and advanced onboard charger yetengineered for peak performance in the harshest marine environments.
- MULTIPLE BANKS A three-bank onboard battery charger rated at 15 amps total - 5 amps per bank. Independently charge 12V batteries in marine, boat, starter, and deep-cycle systems.
- CHARGING MODES Selectable modes for each bank: 12V, 12V AGM, 12V Lithium, and 12V Repair Mode. Independently charge and maintain all types of lead-acid and lithium-ion batteries with precision.
- ENJOY PRECISION CHARGING An integrated thermal sensor adjusts charging based on ambient temperature, preventing overcharging in heat and undercharging in cold for optimal battery performance.
- CHARGE DEAD BATTERIES Charge batteries from as low as 1 volt, or use Force Mode to manually begin charging batteries down to zero volts to recover deeply discharged or neglected batteries.
- REDEFINED MOUNTING A simplified mounting system allows for fast, secure installation in any orientation - even upside down - with an integrated anti-vibration backing to isolate shock and noise.
- DESIGNED FOR WATER A fully-sealed onboard charger rated IP68 for waterproof protection. Survives brutal life cycle testing, including thousands of hours underwater in the harshest marine conditions.
- WHATS IN THE BOX GEN5X3 15A 3-bank onboard charger with 72-inch DC cables and 3/8-inch eyelets, 72-inch AC cable (Type-B), and two mounting screws. Backed by a 3-year warranty and engineered in the USA.
Description
The NOCO GEN5X3 is a fully-sealed, waterproof onboard battery charger rated at 15 amps total—5 amps per bank—designed for 12-volt lead-acid and lithium-ion batteries, including flooded, AGM, gel, and LiFePO₄ chemistries. It’s 37% smaller and delivers 43% more power than the previous-generation GENM3, making it our most compact and advanced charger yet. Each bank operates independently, allowing you to precisely charge and maintain three batteries simultaneously, even if they differ in type or condition. Selectable charging modes—12V, AGM, Lithium, and Repair Mode—offer tailored charging for battery health and longevity, while an integrated thermal sensor automatically adjusts charging in hot and cold climates to prevent overcharging or undercharging. For severely discharged batteries, Force Mode lets you manually begin charging from zero volts, a critical advantage for recovering deeply neglected batteries that other chargers can’t detect. Engineered for the harshest marine environments, the GEN5X3 features an IP68 rating and has endured brutal life cycle testing, including thousands of hours underwater. Installation is fast and secure in any orientation—even upside down—thanks to a redesigned mounting system with an integrated anti-vibration backing that isolates shock and noise. The GEN5X3 comes with 72-inch DC cables with 3/8-inch eyelets, a 72-inch Type-B AC cable, two mounting screws, and a user guide. It’s backed by a 3-year warranty, engineered in the USA, and certified to UL1236, ISO 8846, and 33 CFR 183.410 for safety, ignition protection, and marine compliance.
Brand: NOCO
Color: Black
Product Dimensions: 10.08"D x 8.86"W x 5.63"H
Item Weight: 6.1 Pounds
Output Voltage: 12 Volts
Output Voltage: 12 Volts
Input Voltage: 240 Volts
Battery Charge Time: 1 Hours
Current Rating: 15 Amps
Amperage: 5
Compatible Devices: 12-volt batteries (marine, boat, starter, deep-cycle, and lithium-ion)
Connector Type Used on Cable: Standard DC and AC power connectors
Number of Ports: 3
Item Dimensions D x W x H: 10.08"D x 8.86"W x 5.63"H
Item Weight: 6.1 Pounds
Specification Met: CEC, FCC, UL
Color: Black
Brand: NOCO
Mfr Part Number: GEN5X3
Global Trade Identification Number: 65
UPC: 046221190465
Manufacturer: NOCO
Model Number: GEN5X3
Item Type Name: NOCO Genius GEN5X3, 3-Bank, 15A (5A/Bank) Smart Marine Battery Charger, 12V Waterproof Onboard Boat Charger, Battery Maintainer and Desulfator for AGM, Lithium (LiFePO4) and Deep-Cycle Batteries
Warranty Description: 3-Year Limited
Built-In Media: (2) Black Truss-Head Screws, GEN5X3 15A 3-Bank Smart Waterproof Onboard Marine Battery Charger and Battery Maintainer (120-240VAC), Onboard Marine Battery Charger User Guide
Unit Count: 1.0 Count
Frequently asked questions
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- Zip Pay in 4
- Financing through Apple Pay
- Financing through Google Pay
Learn more about financing & leasing here.
