1. Introduction
The NOCO Genius G750 is an advanced 6-volt and 12-volt battery charger and maintainer designed for various battery types up to 30Ah. It offers safe and efficient charging, maintenance, and repair capabilities for automotive, marine, RV, power sport, lawn & garden, and deep-cycle batteries. This manual provides essential information for the proper setup, operation, and maintenance of your G750 charger.

Figure 1 : The NOCO Genius G750 Battery Charger. This image displays the compact charger unit along with its included battery clamps and integrated eyelet terminals, ready for connection to a battery.
2. Consignes de sécurité
Always read and understand all safety information before using the G750 charger. This device incorporates spark-proof technology, reverse polarity protection, and overcharge protection for enhanced safety. Ensure proper ventilation when charging batteries.
- N'exposez pas le chargeur à la pluie ou à des conditions humides.
- N’utilisez pas le chargeur s’il a subi un choc violent, s’il est tombé ou s’il a été endommagé de quelque manière que ce soit.
- N'essayez jamais de recharger une batterie gelée.
- Ensure the charger is disconnected from the AC outlet before making or breaking battery connections.
3. Configuration et connexion
The G750 comes with X-Connect battery clamps and integrated eyelet terminals for versatile connection options.
- Identifier le type et le volume de la batterietage: Confirm if your battery is 6-volt or 12-volt and its chemistry (e.g., Wet, Gel, AGM).
- Connexion à la batterie :
- Utilisation de la batterie Clamps: Connectez le positif rouge (+) clamp à la borne positive de la batterie et au fil noir négatif (-)amp à la borne négative de la batterie. Assurez-vous d'une connexion bien serrée.
- Using Eyelet Terminals: If permanently installing, attach the red eyelet to the positive battery terminal and the black eyelet to the negative battery terminal.
- Connexion à l'alimentation secteur : Plug the charger's AC power cord into a 120-volt 50-60Hz electrical outlet. The charger will enter Standby mode.
- Vérifiez la connexion : Le chargeur détectera automatiquement le vol de la batterietage (6V or 12V). If the connection is incorrect or the battery voltage is outside the operating range, the error indicator may illuminate.
4. Mode d'emploi
The G750 features an intuitive interface with LED indicators and a mode button for selecting charging programs.
- Sélectionnez le mode de charge : After connecting to the battery and AC power, press the Mode button (often indicated by a circle with an atom symbol) to cycle through the available charging programs.
- Mode 6 V : Pour les batteries de 6 volts.
- Mode 12 V : For standard 12-volt batteries (e.g., automotive, marine).
- 12V Small Mode: For smaller 12-volt batteries (e.g., motorcycles, ATVs, snowmobiles, up to 30Ah). This mode provides a lower amperage charge (0.9 Amp ou 900mAmp) suitable for these battery types.
- 12V Cold/AGM Mode: For charging 12-volt batteries in cold conditions (below 32°F / 0°C) or for AGM batteries. This mode adjusts charging voltage for optimal performance in these scenarios.
- Processus de charge : Once a mode is selected, the charger will begin the charging process. LED indicators will show the state-of-charge and diagnostic information. The charger automatically monitors battery activity for safe and efficient charging.
- Mode de maintenance : When the battery is fully charged, the G750 automatically transitions into maintenance mode, keeping the battery optimized without overcharging. It can remain safely connected 24/7.
- Mode de réparation : The G750 can help repair damaged batteries and improve their performance and longevity, especially those left uncharged for extended periods. This is typically an automatic function within the charging cycle.
5. Entretien
The NOCO Genius G750 is designed for minimal maintenance. Keep the charger clean and dry. Regularly inspect the cables and connectors for any damage. The unit is impact, UV, and water-resistant (IP64), but avoid submerging it in water.
- Rangez le chargeur dans un endroit frais et sec lorsqu'il n'est pas utilisé.
- Ensure connections are clean and free of corrosion for optimal performance.
- The charger is designed to be left connected for long-term maintenance without supervision.
6. Dépannage
If the charger is not operating as expected, refer to the following common issues:
| Problème | Cause possible | Solution |
|---|---|---|
| Le chargeur ne s'allume pas. | Pas de courant alternatif ; prise défectueuse. | Vérifiez la connexion d'alimentation secteur ; essayez une autre prise. |
| Error LED illuminates. | Reverse polarity connection; battery voltage too low/high; short circuit. | Verify positive and negative connections; ensure battery voltage is within 6V/12V range; check for short circuits. The charger has reverse polarity and short-circuit protection. |
| La batterie ne charge pas. | Incorrect mode selected; deeply discharged battery. | Ensure the correct 6V or 12V mode is selected for your battery. The charger may take time to recover deeply discharged batteries. |
| Charger remains in Standby mode. | Mode not selected after connection. | Appuyez sur le Mode button to select the appropriate charging program. |
7. Spécifications
- Modèle: G750
- Vol d'entréetage: 120 Volts AC, 50-60Hz
- Volume de sortietage: 6 Volts DC, 12 Volts DC
- Ampâge : 0.75 Amps (750 Milliamps)
- Capacité de la batterie : Jusqu'à 30 Ah
- Types de batterie: 6V and 12V Lead-Acid (Wet, Gel, AGM, Maintenance-Free)
- Protection: Spark-proof, Reverse Polarity, Overcharge, Short-Circuit
- Note environnementale : IP64 (Impact, UV, Water-Resistant)
- Dimensions: 6.5 x 3.75 x 4 pouces
- Poids de l'article : 1.08 livres
8. Garantie et assistance
The NOCO Genius G750 comes with a Garantie limitée de 5 ans. For warranty claims or technical support, please refer to the contact information provided in your product packaging or visit the official NOCO webConsultez le site. Conservez votre reçu d'achat comme preuve d'achat.





