1. Produttu Finituview
The NOCO GEN5X3 is a fully-sealed, waterproof onboard battery charger designed for 12-volt lead-acid and lithium-ion batteries. It features three independent banks, each providing 5 amps of charging power, for a total of 15 amps. This advanced charger is engineered for peak performance in harsh marine environments and offers multiple charging modes to optimize battery health and longevity.

Image: The NOCO Genius GEN5X3 3-Bank Onboard Battery Charger, showcasing its compact design and three independent charging banks with LED indicators.
Funzioni chjave:
- Multi-Bank Charging: Independently charges and maintains up to three 12V batteries simultaneously.
- Advanced Chemistries: Compatible with flooded, AGM, gel, and LiFePO₄ (lithium) battery types.
- Disegnu Impermeabile: IP68 rated, fully sealed to withstand extreme marine conditions.
- Compensazione Termica: Integrated sensor adjusts charging based on ambient temperature to prevent overcharging or undercharging.
- Modu di forza: Allows manual initiation of charging for severely discharged batteries (down to zero volts).
- Funzionamentu automaticu: Provides year-round, worry-free charging with zero overcharge and auto-memory for selected modes.
- Disegnu compactu: 37% smaller than previous models, offering enhanced power density.
2. Setup è Installazione
Chì ci hè in u Box:
- GEN5X3 15A 3-Bank Smart Waterproof Onboard Marine Battery Charger and Battery Maintainer (120-240VAC)
- Guida di l'utente di u caricatore di batteria marina à bordu
- (2) Black Truss-Head Screws for mounting

Image: Diagram showing the NOCO GEN5X3 charger, DC cables with eyelets, AC cable, mounting screws, and user guide included in the package.
Passi di stallazione:
- Sceglie u locu di muntatura: Select a secure, dry location for the charger. The redesigned mounting system allows for fast and secure installation in any orientation, even upside down, with an integrated anti-vibration backing.
- Assicurà u caricatore: Use the provided mounting screws to firmly attach the GEN5X3 to the chosen surface.
- Connect DC Cables: For each battery bank, connect the positive (+) eyelet connector to the positive battery terminal and the negative (-) eyelet connector to the negative battery terminal. Ensure connections are tight and secure.
- Cunnette l'alimentazione AC: Plug the 72-inch AC cable (Type-B) into a suitable power outlet.
- Verificate e cunnessione: Before powering on, double-check all connections to ensure correct polarity and secure attachment.
3. Operating Instructions
The GEN5X3 operates automatically, but understanding its modes and indicators will help optimize battery charging and maintenance.
Carica di più batterie:
The GEN5X3 is a multi-bank charger, allowing you to charge and maintain three 12V batteries simultaneously. Each bank operates independently, meaning you can charge different battery types or conditions at the same time.

Image: The NOCO GEN5X3 connected to multiple 12V batteries, illustrating its multi-bank charging capability for various battery chemistries like flooded, gel, maintenance-free, AGM, and lithium.
Selectable Charging Modes:
Each bank features a 'MODE' button to cycle through different charging profiles:
- Modu 12V: Per batterie da 12 V à celle umide, à gel, à inundazione migliorata, senza manutenzione è à calciu.
- Modu AGM 12V: Specificamente per batterie AGM 12V.
- Modu di Lithium 12V: For 12V lithium-ion batteries (including lithium iron phosphate - LiFePO₄) with Battery Management Systems (BMS).
- Modu di riparazione 12V: Used to repair old, idle, damaged, stratified, or sulfated batteries.

Image: Visual representation of the different charging modes available on the GEN5X3: 12V, 12V AGM, 12V Lithium, and 12V Repair Mode, with descriptions of their applications.
Compensazione Termica:
The integrated thermal sensor automatically adjusts the charging cycle based on ambient temperature. This prevents overcharging in hot climates and undercharging in cold climates, ensuring optimal battery performance and longevity.

Image: Diagram illustrating how the NOCO GEN5X3 adjusts charging based on temperature, preventing overcharging in hot conditions (104°F/40°C) and undercharging in cold conditions (-4°F/-20°C).
Charging Dead Batteries (Force Mode):
The GEN5X3 can charge batteries from as low as 1 volt. For severely discharged or neglected batteries down to zero volts, use Force Mode. To activate, press and hold the 'MODE' button for approximately five (5) seconds until the charge mode LEDs flash. This allows the charger to manually begin charging the battery.

Image: A multimeter showing a low voltage battery connected to the NOCO GEN5X3, demonstrating the charger's ability to detect batteries down to 1-volt and the use of Force Mode for zero-volt batteries.
Completely Automatic Operation:
The GEN5X3 provides worry-free, year-round charging. It can be left plugged in 24/7 without concerns of overcharging. The charger automatically returns to its last selected mode after a power interruption.

Image: The NOCO GEN5X3 installed in a boat compartment, highlighting its year-round, worry-free, zero overcharge, and auto-memory features for battery charging.
Charge Level Indicators:
The charger features intuitive LED indicators to show the battery's charge status:
- Rossu pulsanti: Battery is less than 50% charged.
- Pulsing Orange: Battery is less than 75% charged.
- Pulsing Green: Carica in massa cumpleta, ottimizendu a batteria per una vita estesa.
- Verde solidu: Battery is 100% charged. The charger will continue to provide ongoing maintenance.

Image: Visual guide to the NOCO GEN5X3's charge level indicators, showing the progression from 25% charged (pulsing red) to 100% charged (solid green) and maintenance mode.
4. Mantenimentu
To ensure the longevity and optimal performance of your NOCO GEN5X3 charger, follow these simple maintenance guidelines:
- Mantene pulita: Periodically wipe down the charger with a soft, damp pannu per caccià a polvera è i detriti. Evitate l'usu di prudutti chimichi aggressivi o di detergenti abrasivi.
- Inspeccione i cavi è i cunnessi: Regularly check the AC and DC cables for any signs of damage, fraying, or corrosion. Ensure all eyelet connections to the battery terminals are clean and secure.
- Conservazione: When not in use for extended periods, store the charger in a cool, dry place. Although waterproof, proper storage helps preserve its condition.
- Integrità Impermeabile: The GEN5X3 is rated IP68, meaning it is fully sealed and designed to withstand water immersion. This robust construction minimizes the need for specific water-related maintenance, but always ensure the AC input port is free of debris before plugging in.

Image: The NOCO GEN5X3 submerged in water, demonstrating its IP68 waterproof rating and fully-sealed charging capability, highlighting its durability in marine environments.
5. Risoluzione di prublemi
If you encounter issues with your GEN5X3 charger, refer to the following common problems and their solutions. The charger also provides advanced diagnostics through its LED indicators.
Indicatori di diagnosticu:

Image: Visual guide to the NOCO GEN5X3's advanced diagnostic indicators, including High Voltage, Bad Battery, Reverse Polarity, and Standby Mode, with explanations for each.
- High Voltage: Se u voltage is too high for the selected charge mode, the corresponding indicator will illuminate. Check the battery and ensure the correct charge mode is selected.
- Bad Battery: A bad battery indicator suggests a potential short circuit or that the battery will not hold a charge. Have the battery checked by a professional.
- Polarità Inversa: This indicator illuminates if the charger is connected to the battery in reverse. Immediately disconnect and correct the connections.
- Modu Standby: The charger enters standby mode if the battery voltage is too low for the charger to detect. Use Force Mode to initiate charging for deeply discharged batteries.
Problemi cumuni:
- U caricatore ùn si accende micca: Ensure the AC power cable is securely plugged into both the charger and a live power outlet. Check the circuit breaker.
- Batteria micca carica: Verify that the DC cables are correctly and securely connected to the battery terminals. Ensure the correct charging mode is selected for your battery type. If the battery is severely discharged, try using Force Mode.
- Charger Gets Hot: It is normal for the charger to warm up during operation, especially during bulk charging. Ensure adequate ventilation around the unit. If it becomes excessively hot or emits smoke, disconnect immediately and contact support.
6. Specificazioni
| Specificazione | Valore |
|---|---|
| Numero di mudellu | GEN5X3 |
| Uscita Voltage | 12 Volts |
| Corrente Totale di Risultatu | 15 Amps (5A per bank) |
| Numeru di banche | 3 |
| Dimensioni di u produttu | 10.08"P x 8.86"L x 5.63"A (25.6cm x 22.5cm x 14.3cm) |
| Pesu di l'articulu | 6.09 liri (2.76 kg) |
| Valutazione impermeabile | IP68 |
| Tipi di batterie cumpatibili | 12V Lead-Acid (Flooded, AGM, Gel), 12V Lithium-Ion (LiFePO₄) |
| Input AC | 120-240VCA, 50-60Hz |
| Certificazioni | UL1236, ISO 8846, 33 CFR 183.410 |

Image: Technical diagram showing the precise measurements of the NOCO GEN5X3 charger in both inches and millimeters.
7. Garanzia è Support
Informazione di garanzia:
The NOCO GEN5X3 Onboard Battery Charger is backed by a 3 anni di garanzia. This warranty covers defects in material and workmanship under normal use and service. Please refer to the included user guide for full warranty terms and conditions.
Assistenza Clienti:
For technical assistance, troubleshooting beyond this manual, or warranty claims, please visit the official NOCO support website or contact their customer service department. Detailed contact information can be found in your product's user guide or on the NOCO websitu.
Per più infurmazione è supportu, visitate www.no.co/support





