Introduzione
This manual provides essential information for the safe and efficient operation of your CTEK NXT 5 Smart Charger. The NXT 5 is a new generation 5A charger designed for advanced compatibility with 12V lead-acid and lithium (LiFePO4) batteries. It is built on the reliable CTEK MXS 5.0 platform, featuring a more durable design and award-winning Swedish technology.
Please read this manual carefully before using the charger to ensure proper function and to prevent damage to the unit or your battery.
Informazioni sulla sicurezza
Always prioritize safety when working with electrical equipment and batteries. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Ensure the charger is disconnected from the mains power before connecting or disconnecting the battery.
- Use the charger only for 12V lead-acid and lithium (LiFePO4) batteries. Do not attempt to charge other battery types.
- Avoid charging a frozen battery. Allow it to thaw before charging.
- Ensure adequate ventilation when charging, especially for lead-acid batteries, as they can emit explosive gases.
- Keep the charger away from water, moisture, and flammable materials. The unit is splash and dust-resistant but not submersible.
- Do not operate the charger if it has been damaged or dropped. Contact support for assistance.
- The charger is spark-free and protected against reverse polarity, enhancing safety during connection.
- Tenere fuori dalla portata dei bambini.
Caratteristiche del prodotto
The CTEK NXT 5 charger incorporates several advanced features for optimal battery care:
- Compatibilità avanzata: Charges 12V lead-acid (WET, MF, Ca/Ca, AGM, EFB, GEL) and lithium (LiFePO4) batteries from 1.2 Ah to 160 Ah.
- Reconditioning Mode: Patented desulphation and reconditioning modes help restore the capacity of discharged or deeply discharged batteries, extending their lifespan.
- AGM Optimization: Maximizes charging efficiency for Start/Stop and AGM batteries, providing faster charging and maximizing lifespan.
- Compensazione automatica della temperatura: Adapts charging parameters to ambient temperature, ensuring optimal performance in both hot and cold climates.
- Manutenzione Float/Puls: Keeps batteries in optimal condition for safe, long-term storage and readiness.
- Design robusto: Features durable rubber cables and a splash-proof, dust-resistant casing for longevity and intensive use.
- Caratteristiche di sicurezza: Spark-free operation and reverse polarity protection ensure safety for sensitive vehicle electronics and the user.

Image: The CTEK NXT 5 Smart Charger displaying its mode indicators for different battery types and charging stages. This charger offers simple 'connect and forget' operation.

Image: The CTEK NXT 5 charger connected to a motorcycle battery, showcasing its robust design with durable rubber cables and splash-proof casing, built for intensive use and various conditions.
Impostare
- Disimballare il caricabatterie: Remove the CTEK NXT 5 charger and all accessories from the packaging.
- Scegli una posizione: Place the charger on a stable, flat surface in a well-ventilated area, away from direct sunlight, heat sources, and flammable materials.
- Identificare il tipo di batteria: Determine if your battery is a 12V lead-acid (WET, MF, Ca/Ca, AGM, EFB, GEL) or lithium (LiFePO4) type. This will influence the mode selection.
- Collegamento alla batteria:
- Collegare il cl rossoamp al terminale positivo (+) della batteria.
- Collegare il cl neroamp al terminale negativo (-) della batteria. Se si carica una batteria installata in un veicolo, collegare il polo neroamp al telaio del veicolo, lontano dalla batteria e dal tubo del carburante.
- Ensure connections are secure. The charger is protected against reverse polarity, but correct connection is always recommended.
- Collegamento alla rete elettrica: Plug the charger's power cord into a suitable 12V AC wall outlet.

Image: The CTEK NXT 5 charger connected to a 12V battery, demonstrating its compatibility with both lead-acid and lithium (LiFePO4) battery types.
Istruzioni per l'uso
The CTEK NXT 5 operates with a simple "connect and forget" principle, but proper mode selection is crucial.
- Accensione: Once connected to the battery and mains power, the charger will automatically start.
- Seleziona la modalità di ricarica: Press the "MODE" button to cycle through the available charging programs. The selected mode will be indicated by an illuminated LED.
- Normal (Car/Motorcycle icon): For most lead-acid batteries (WET, MF, Ca/Ca, GEL).
- AGM (AGM icon): For AGM and Start/Stop batteries.
- Recond (Recond icon): For reconditioning deeply discharged lead-acid batteries. Use this mode sparingly.
- Lithium (Lithium icon): For 12V LiFePO4 batteries.
Note: The charger automatically compensates for temperature, adjusting charging parameters for optimal performance in hot or cold conditions.
- Ricarica del monitor: The charger's display will show the current charging stage (CHECK, CHARGE, CARE).
- DAI UN'OCCHIATA: Initial analysis of battery condition.
- CARICARE: Fase di carica principale.
- CURA: Float/pulse maintenance charging, keeping the battery at optimal charge.
- Ricarica completata: The "CARE" LED will illuminate when the battery is fully charged and in maintenance mode. The charger can remain connected for extended periods for long-term maintenance.
- Disconnessione:
- Per prima cosa, scollegare il caricabatterie dalla presa di corrente.
- Then, disconnect the black clamp from the negative (-) terminal or chassis.
- Finally, disconnect the red clamp dal terminale positivo (+).

Image: The CTEK NXT 5 charger connected to a car battery, illustrating its reconditioning capabilities to revive discharged or deeply discharged batteries and prolong their lifespan.

Image: The CTEK NXT 5 charger in use, demonstrating its automatic temperature compensation feature which adjusts charging for optimal battery performance in extreme hot or cold conditions.
Manutenzione
The CTEK NXT 5 charger is designed for durability and requires minimal maintenance.
- Pulizia: Pulisci il caricabatterie casing with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners. Ensure the charger is disconnected from both mains and battery before cleaning.
- Ispezione dei cavi: Regularly inspect the charging cables and connectors for any signs of damage, fraying, or corrosion. Replace damaged cables immediately.
- Magazzinaggio: Conservare il caricabatterie in un luogo fresco e asciutto quando non lo si utilizza. Evitare temperature estreme.
Risoluzione dei problemi
If you encounter issues with your CTEK NXT 5 charger, refer to the following common problems and solutions:
| Problema | Possibile causa | Soluzione |
|---|---|---|
| Charger does not start or no LEDs illuminate. | No mains power; incorrect battery connection; battery voltage troppo basso. | Check mains power supply. Ensure correct polarity connection to battery. The charger may not start if battery voltage is below 2.0V for lead-acid or 8.0V for LiFePO4. |
| Error LED (if present) is lit. | Collegamento con polarità invertita; cortocircuito; guasto della batteria. | Check battery connections for correct polarity. Inspect cables for damage. If the issue persists, the battery may be faulty. |
| La ricarica richiede troppo tempo. | Battery is deeply discharged; battery capacity is large; incorrect mode selected. | Deeply discharged batteries require more time. Ensure the correct mode (e.g., AGM for AGM batteries) is selected. |
| Il caricabatterie si riscalda durante il funzionamento. | Funzionamento normale. | It is normal for the charger to become warm during charging. Ensure adequate ventilation. |
If these solutions do not resolve the issue, please contact CTEK customer support.

Image: The CTEK NXT 5 charger connected to a battery, highlighting its safety features such as spark-free operation and reverse polarity protection, ensuring safety for sensitive vehicle electronics.
Specifiche
| Caratteristica | Dettaglio |
|---|---|
| Marca | CTEK |
| Modello | 5° posto |
| Colore | Nero |
| Volume di uscitatage | 12 Volt (CC) |
| Ingresso volumetage | 12 Volt (CA) |
| Corrente di carica | 5A |
| Compatibilità della batteria | 12V Lead-acid (WET, MF, Ca/Ca, AGM, EFB, GEL) and Lithium (LiFePO4) |
| Capacità della batteria | Da 1.2 Ah a 160 Ah |
| Conformità | CE |
Garanzia
The CTEK NXT 5 Smart Charger comes with a Garanzia di 5 anno dalla data di acquisto. La presente garanzia copre difetti di fabbricazione e difetti dei materiali in condizioni di normale utilizzo. Si prega di conservare la prova d'acquisto per eventuali reclami in garanzia.
The warranty does not cover damage caused by misuse, neglect, improper installation, unauthorized modifications, or normal wear and tear.
Supporto
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact CTEK customer support through their official websito o distributori autorizzati.
Visit the official CTEK website for the latest information and support resources: www.ctek.com