1. Introducció
Thank you for choosing the Dyness 14.6V 20A LiFePO4 Smart Automatic 3-Level Battery Charger. This charger is specifically designed for 12V (12.8V) Lithium Iron Phosphate (LiFePO4) batteries, offering efficient and safe charging with advanced protection features. Please read this manual thoroughly before use to ensure proper operation and to maximize the lifespan of your battery and charger.

Figura 1: Dyness 14.6V 20A LiFePO4 Battery Charger.
2. Informació de seguretat
Always prioritize safety when operating electrical equipment. This charger incorporates multiple safety features, but proper handling is crucial.
- Ús previst: This charger is designed exclusively for 12V (12.8V) LiFePO4 batteries. Do not use it with other battery types (e.g., lead-acid, Ni-MH, Ni-Cd) as this may cause damage to the battery or charger, or pose a safety risk.
- Ventilació: Ensure adequate ventilation during charging. Do not cover the charger or operate it in an enclosed space.
- Condicions ambientals: Avoid exposing the charger to water, moisture, direct sunlight, or extreme temperatures. Operate within the specified temperature range.
- Connexió: Always connect the charger to the battery before plugging it into the AC power outlet. Disconnect from AC power before disconnecting from the battery.
- Equipament danyat: Do not operate the charger if it or its cables are damaged. Contact customer support for assistance.
- Nens i animals de companyia: Mantingueu el carregador i la bateria fora de l'abast dels nens i les mascotes.
Integrated Multi-Protection System
The Dyness LiFePO4 charger is equipped with several built-in protection mechanisms to ensure safe operation:
- Protecció contra el sobreescalfament: Automatically shuts down if the internal temperature exceeds safe limits.
- Protecció contra curtcircuits: Evita danys en cas de curtcircuit.
- Protecció de polaritat inversa: Protegeix contra connexions incorrectes de la bateria.
- Overvoltage Protecció: Mesures de salvaguarda contra el volum excessiutage sortida.

Figura 2: Visual representation of the charger's multi-protection system, including safeguards against overheating, short-circuits, reverse polarity, and overvoltage.
3. Components del producte
The Dyness 14.6V 20A LiFePO4 Battery Charger package includes the following items:
- Dyness 14.6V 20A LiFePO4 Battery Charger Unit
- Cable d'alimentació de CA.
- DC Output Cable with Anderson 50A Connector and M8 terminals
- Manual d'usuari (aquest document)

Figura 3: The package contents, including the charger unit, AC power cable, DC cable with Anderson connector, and user manual.
4. Configuració i connexió
Follow these steps to properly connect your Dyness LiFePO4 charger to your battery and power source:
- Prepareu la bateria: Ensure your LiFePO4 battery is in a stable, well-ventilated area. Verify that the battery terminals are clean and free of corrosion.
- Connecteu el cable de sortida de CC: Connect the DC output cable from the charger to your LiFePO4 battery. The charger features an Anderson 50A connector for easy and secure connection, along with M8 terminals for direct bolt-on applications. Ensure correct polarity: red to positive (+), black to negative (-).
- Connecteu el cable d'alimentació de CA: Once the DC cable is securely connected to the battery, plug the AC power cable into the charger's AC input port.
- Connecteu-vos a la presa de corrent: Finally, plug the AC power cable into a standard wall outlet (100-240V AC, 50/60Hz).
- Verifica la connexió: The LED indicators on the charger will provide real-time status updates (charging/full/error). Refer to the "Operating Instructions" section for details on LED indications.

Figura 4: Acabatview of the charger's DC output connector, AC input connector, and LED display for status indication.
5. Instruccions de funcionament
Intelligent 3-Level Charging Mode
The Dyness LiFePO4 charger utilizes an intelligent 3-level charging algorithm to optimize battery performance and longevity:
- Pre-charge (T1): Aquesta s inicialtage gently charges deeply discharged batteries, helping to restore them safely and extend their overall lifespan.
- Fast Charge (T2): Durant aquest stage, the charger delivers a constant current to rapidly charge the battery to approximately 80-90% of its capacity.
- Vol. Constanttage (T3): Al final stage, el carregador manté un volum constanttage while gradually reducing the current until the battery is fully charged. This ensures a safe and complete charge.

Figura 5: A graph illustrating the 3-stage charging process (Pre-charge, Fast Charge, Constant Voltage) with corresponding voltage and current curves over time.
0V Activation Function
The charger features a 0V activation function, allowing it to reactivate deeply discharged LiFePO4 batteries, even if their Battery Management System (BMS) has triggered protection. This function safely brings the battery back to a normal voltage level, making it usable again.

Figura 6: Depiction of the secure battery activation process, showing the charger's ability to reactivate LiFePO4 batteries after BMS protection has been triggered.
Estimació del temps de càrrega
The charging time will vary depending on the battery capacity and its current state of charge. Approximate charging times for common LiFePO4 battery capacities are:
- 100Ah LiFePO4 battery: Approximately 5 hours
- 200Ah LiFePO4 battery: Approximately 10 hours
- 300Ah LiFePO4 battery: Approximately 15 hours
Note: These times are estimates and may vary based on battery condition, ambient temperature, and other factors.

Figura 7: Visual guide to estimated charging times for 100Ah, 200Ah, and 300Ah 12V LiFePO4 batteries using the Dyness 20A charger.
6. Manteniment
To ensure the longevity and optimal performance of your Dyness LiFePO4 charger, follow these simple maintenance guidelines:
- Neteja: Disconnect the charger from both AC power and the battery before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or solvents.
- Emmagatzematge: Quan no l'utilitzeu, guardeu el carregador en un lloc fresc i sec, allunyat de la llum solar directa i de temperatures extremes.
- Ventilació: Regularly check that the ventilation openings are not blocked by dust or debris. The robust aluminum casing with an internal fan ensures optimal heat dissipation, but clear airflow is essential.
- Inspecció del cable: Periodically inspect the AC and DC cables for any signs of damage, fraying, or loose connections. Replace damaged cables immediately.

Figura 8: Primer pla view of the charger's integrated fan, highlighting its role in efficient heat dissipation for prolonged lifespan.
7. Solució De Problemes
If you encounter issues with your Dyness LiFePO4 charger, refer to the following common problems and solutions:
| Problema | Causa possible | Solució |
|---|---|---|
| Charger not turning on / No LED indication | No AC power; Loose connections; Faulty AC cable. | Check AC power outlet; Ensure AC and DC cables are securely connected; Try a different AC cable if available. |
| Charging LED not illuminating / Charger not charging | Incorrect battery connection (reverse polarity); Battery deeply discharged (0V); Battery fault; Charger fault. | Verify correct polarity (red to +, black to -); For deeply discharged batteries, the 0V activation function should initiate automatically (see Operating Instructions); Test with another known good battery if possible; Contact support if issue persists. |
| LED d'error il·luminat | Overheating; Short circuit; Overvoltage; Internal fault. | Disconnect charger, allow to cool down in a well-ventilated area; Check for short circuits in wiring; Ensure battery voltage is within acceptable range; If error persists, contact customer support. |
| Càrrega lenta | Battery capacity is very large; Battery is heavily discharged; Ambient temperature is low. | Charging times vary by battery capacity (refer to "Charging Time Estimates"); Ensure charger is in a suitable temperature environment. |
If the problem persists after attempting these solutions, please contact Dyness customer support for further assistance.
8. Especificacions
The following table details the technical specifications for the Dyness 14.6V 20A LiFePO4 Battery Charger:
| Característica | Valor |
|---|---|
| Marca | Dyness |
| Model | 14.6V 20A LiFePO4 Charger |
| Entrada Voltage | 100-240V AC, 50/60Hz |
| Vol. De sortidatage | 14.6 Volts DC |
| Corrent de sortida | 20 Amperes |
| Dimensions del producte (L x A x A) | 20.3 x 10 x 5.4 cm (8.0 x 3.9 x 2.1 polzades) |
| Pes de l'article | 1.3 quilos (2.87 lliures) |
| Tipus de connector | Anderson 50A, M8 terminals |
| Temperatura de funcionament | -10 °C a 40 °C (de 14 °F a 104 °F) |
| Temperatura d'emmagatzematge | -40 °C a 70 °C (-40 °F a 158 °F) |
| Color | Negre |
| País d'origen | Xina |

Figura 9: A table summarizing the key technical specifications of the LiFePO4 charger.
9. Garantia i Suport
The Dyness 14.6V 20A LiFePO4 Battery Charger comes with a 2 any de garantia de qualitat des de la data de compra. Aquesta garantia cobreix els defectes de materials i de mà d'obra en ús normal.
For technical assistance, warranty claims, or any questions regarding your product, please contact Dyness customer support. Our professional technical support and customer service team are available to assist you within 24 hours.
Si us plau, conserveu el comprovant de compra per validar la garantia.