1. Introducció i finalview
The Projecta IC3500 is an advanced 12V 35A automatic 7-stage battery charger designed for a wide range of battery types, including Wet, Calcium, AGM, and Gel. Its sophisticated charging algorithm ensures optimal battery health, extended life, and superior performance, making it ideal for high-power demands in applications such as caravans, motor homes, automotive, and marine vehicles.
This manual provides essential information for the safe and effective operation, setup, and maintenance of your Projecta IC3500 battery charger.

Figure 1: Projecta IC3500 Battery Charger with power cord and battery clamps.
2. Característiques clau
- 7-Stage Automatic Charging: Utilizes a comprehensive charging process to optimize battery performance and longevity.
- Compatibilitat multiquímica: Supports Wet, Calcium, AGM, and Gel battery types. The charging profile can be set to suit the specific battery chemistry.
- Sortida ajustable: Output current can be adjusted (2A, 8A, 16A, 35A) to suit different battery sizes. Includes a 1.8m temperature compensation probe for precise charging based on ambient temperature.
- Mode d'alimentació: Functions as a stable 12V power supply, useful for retaining vehicle computer settings during battery changes or for running 12V appliances.
- Comandament a distància per cable: Features a remote control with a 4.5m lead, allowing the charger to be mounted out of sight while maintaining full control and monitoring.
- Disseny durador i segur: Constructed for shock and dust resistance. Incorporates spark-free and polarity-protected connections for enhanced safety.
- LCD Screen with LED Indicators: Provides clear feedback on charging status.

Figura 2: Primer pla view of the charger's LCD display, showing current output and battery type selection.
3. Configuració i instal·lació
3.1 Desembalatge i inspecció
Carefully remove the charger from its packaging. Inspect the unit for any signs of damage during transit. Ensure all components, including the charger unit, battery clamps, power cord, temperature compensation probe, and remote control, are present.
3.2 Precaucions de seguretat
- Feu servir sempre el carregador en una zona ben ventilada.
- Ensure the charger is disconnected from the AC power outlet before making or breaking connections to the battery.
- Wear appropriate personal protective equipment, including eye protection and gloves, when working with batteries.
- Avoid sparks or flames near batteries, as they can produce explosive gases.
- No carregueu bateries congelades.
- Mantenir fora de l'abast dels nens.
3.3 Connexió del carregador
- Ensure the charger is unplugged from the mains power.
- Connecteu el positiu vermell (+) clamp al terminal positiu (+) de la bateria.
- Connecteu el negatiu negre (-) clamp to the negative (-) terminal of the battery. For vehicles, connect the black clamp al xassís del vehicle lluny de la bateria i la línia de combustible si la bateria encara és al vehicle.
- Plug the charger's AC power cord into a standard 240VAC, 50Hz power outlet.
- If using the temperature compensation probe, connect it to the designated port on the charger and place the probe securely on the battery surface.
- If using the wired remote control, connect it to the appropriate port on the charger.

Figure 3: Battery connection cables of the Projecta IC3500 charger.
4. Instruccions de funcionament
4.1 Engegada i visualització inicial
Once connected to the battery and mains power, the charger will power on. The LCD screen will illuminate, and the "POWER ON" LED (Red Light) will be on.

Figure 4: Front panel with LCD display and status indicators.
4.2 Selecting Battery Type and Charge Rate
Use the control buttons on the front panel or remote control to select the appropriate battery chemistry (Wet, Calcium, AGM, or Gel) and the desired charge rate (2A, 8A, 16A, 35A). Refer to your battery's specifications for the recommended charging parameters.
- Volum de càrregatage Configuració:
- GEL: 14.1 V
- AGM: 14.4V
- WET: 14.7V
- CALCIUM: 16.0V
4.3 7-Stage Procés de càrrega
The charger automatically progresses through the following stages:
- Desulfació: Recovers sulphated batteries.
- Inici suau: Gently introduces current to the battery.
- Càrrega massiva: Charges the battery to approximately 80% capacity. The "BULK CHARGE" LED (Blue Light) will be on.
- Absorció: Charges the battery to 100% capacity at a decreasing current. The "ABSORPTION" LED will be on.
- Anàlisi: Prova la bateria per assegurar-se que manté la càrrega.
- Recondicionament: Applies a controlled overcharge to recondition deeply discharged or neglected batteries (if selected).
- Float/Maintenance: Maintains the battery at full charge. The "FULLY CHARGED" LED (Green Light) will be on.
The charger will automatically switch to the next stage as needed. The "Blue Light On" indicates charging is in progress, and "Green Light On" indicates fully charged and maintaining.
4.4 Mode d'alimentació
To activate Power Supply Mode, refer to the specific instructions in the full manual. This mode provides a stable 12V output, preventing loss of vehicle computer settings when the main battery is disconnected or for powering 12V accessories.

Figure 5: The charger is compatible with various battery types, including automotive, marine, and deep cycle batteries.

Figure 6: Application guide illustrating compatibility with Automotive, Marine, and Deep Cycle batteries (AGM & Gel).
5. Manteniment
- Neteja: Disconnect the charger from all power sources and batteries before cleaning. Wipe the casing with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Inspecció del cable: Regularly inspect the power cord and battery cables for any signs of damage, fraying, or corrosion. Replace damaged cables immediately.
- Emmagatzematge: When not in use, store the charger in a cool, dry place, away from direct sunlight and moisture. Ensure cables are neatly coiled to prevent damage.
- Terminals de bateria: Keep battery terminals clean and free of corrosion for optimal connection.
6. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| Charger not powering on (No Red Light) | No AC power; faulty power cord; internal fault. | Check AC outlet and power cord connection. Ensure power switch is ON. If problem persists, contact support. |
| Charger not charging (No Blue Light) | Incorrect battery connection (reverse polarity); battery voltage too low; battery faulty. | Verify correct positive/negative connections. Ensure battery voltage is above 2.5V. Test battery condition. |
| Charger displays error code | Specific fault detected (e.g., short circuit, over-temperature). | Refer to the full manual for specific error code meanings. Disconnect and reconnect the charger. Ensure proper ventilation. |
| La bateria no es carrega completament | Incorrect battery type selected; battery capacity too large for selected charge rate; battery sulphation; faulty battery. | Ensure correct battery type is selected. Increase charge rate if appropriate. Consider using recondition mode if available and suitable for battery type. Test battery health. |
7. Especificacions
| Atribut | Detall |
|---|---|
| Tipus | 7 Stage Automàtic |
| Entrada | 240 VCA, 50 Hz, 570 W |
| Vol. De sortidatage | 12 V |
| Corrent de sortida | 2A, 8A, 16A, 35A (Adjustable) |
| Volum inicial mínimtage | 2.5 V |
| Drenatge posterior | Charger 1mA, With Remote 2mA |
| Aprovacions | Electrical Safety, EMC |
| Volum de càrregatage (GEL) | 14.1 V |
| Volum de càrregatage (AGM) | 14.4 V |
| Volum de càrregatage (WET) | 14.7 V |
| Volum de càrregatage (CALCIUM) | 16.0 V |
| Dimensions del producte | 38 x 9.8 x 30 cm |
| Pes de l'article | 3.42 kg |
| Número de model | IC3500 |

Figure 7: Dimensional drawing of the Projecta IC3500 charger.
8. Garantia i Suport
For warranty information and technical support, please refer to the warranty card included with your product or visit the official Projecta weblloc web. Conserveu el comprovant de compra per a qualsevol reclamació de garantia.
For further assistance, you may contact Projecta customer service through their official channels.





