1. Introduction
Thank you for choosing the FOXSUR 10-Amp 7-Stage Smart Battery Charger/Maintainer. This fully automatic battery charger is designed to bring batteries back to life and extend their lifespan. It features microprocessor control and a 7-stage charging process, making it suitable for a wide range of 12V/24V batteries, including Calcium, Gel, AGM, LiFePO4, Wet, and Lead-Acid types. This manual provides essential information for safe and effective use of your new battery charger.
Figure 1: FOXSUR 10-Amp 7-Stage Smart Battery Charger with cables and plug.
2. Important Safety Information
Please read and understand all safety instructions before operating the charger. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Always turn off the power source before connecting or disconnecting the charger to the battery.
- Connect the red clip to the battery positive (+) terminal and the black clip to the battery negative (-) terminal.
- Do not charge non-rechargeable batteries.
- Do not charge lithium batteries unless specifically designed for LiFePO4 mode.
- Ensure adequate ventilation during charging. Do not operate in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
- Keep the charger away from water, rain, or excessive moisture.
- Do not operate the charger if it has been dropped or damaged.
- This charger is equipped with multiple protection features including reverse-polarity protection, over-current protection, overload protection, over-voltage protection, over-charge protection, and over-temperature protection.
Figure 2: Overview of the charger's built-in protection features, including over-current, overcharge, overheat, short circuit, reverse polarity, fire materials, cooling system, and high voltage protection.
3. Product Overview and Features
The FOXSUR Smart Battery Charger is designed for versatility and ease of use, incorporating advanced technology to optimize battery charging and maintenance.
Key Features:
- Microprocessor Control (CPU): Automatically adjusts charge current and maintainability based on battery condition.
- 7-Stage Charging Process: Optimizes charging for various battery types, including Calcium, Gel, AGM, LiFePO4, Wet, and Lead-Acid batteries. This process can also help restore drained and sulfated batteries.
- Automatic Voltage Detection: Automatically detects 12V or 24V battery systems.
- Intelligent Digital Display: A backlit LCD screen clearly shows charging status, battery status, charge voltage, charge current, and internal temperature.
- Multiple Protection Features: Includes reverse-polarity, over-current, overload, over-voltage, over-charge, and over-temperature protection for safe operation.
- Pulse Repair Function: Helps to repair lost batteries and extend battery life. Note: This function cannot activate a completely dead battery or repair severely damaged batteries to 100% new condition.
Figure 3: Illustration of the 7-stage pulse desulfurization charging technology, highlighting MCU control, temperature detection, repair mode, fast charge, auto memory, and full protection.
Figure 4: The intelligent LCD display provides real-time charging status, including charge voltage, charge current, temperature, repair mode, battery full indication, and error messages.
4. Specifications
| Feature | Specification |
|---|---|
| Input Voltage | 100-240V AC, 50-60Hz |
| Rated Output | 12V 10A, 24V 5A |
| Minimum Start Voltage | 8.0V |
| Battery Range | 6-180Ah |
| Thermal Protection | 65°C +/- 5°C |
| Cooling | Fan cooling |
| Types of Batteries | Most types of 12V/24V batteries, including Calcium, Gel, AGM, SLA, Wet, EFB, Lead Acid, LiFePO4 |
| Product Dimensions | 6.69 x 4.33 x 2.56 inches (17 x 11 x 6.5 cm) |
| Item Weight | 1.28 pounds (0.58 kg) |
5. Setup and Initial Connection
Follow these steps to safely connect the charger to your battery:
- Ensure Vehicle is Off: Before connecting, ensure the vehicle's ignition is off and all accessories are turned off.
- Connect Red Clip: Connect the red (+) positive clamp to the positive terminal of the battery.
- Connect Black Clip: Connect the black (-) negative clamp to the negative terminal of the battery.
- Plug into Power: Plug the charger's AC power cord into a standard 100-240V AC wall outlet.
- Select Mode (if necessary): The charger will automatically detect 12V or 24V. If you need to select a specific charging mode (e.g., LiFePO4, Repair), press the "MODE" button. Ensure the mode is selected before charging begins.
The LCD display will illuminate and show the current battery status and charging information.
Figure 5: Visual guide for connecting the charger: Step 1 shows connecting the red clip to the positive electrode and the black clip to the negative pole. Step 2 shows connecting the AC power.
6. Operating Instructions
6.1. Automatic Charging
Once connected and powered on, the charger will automatically begin the charging process based on the detected battery voltage and type. The 7-stage charging process ensures optimal charging and prevents overcharging.
6.2. Understanding the Display
The backlit LCD display provides real-time information:
- Voltage (V): Shows the current battery voltage.
- Current (A): Displays the charging current.
- Temperature (°C): Indicates the internal temperature of the charger.
- Charging Status: Progress bar or percentage indicating charge level.
- Battery Status: "FUL" for full, "Rep." for repair mode, "Flt." for float mode, "Err" for error.
6.3. Selecting Charging Modes
Press the MODE button to cycle through available charging modes. Ensure you select the appropriate mode for your battery type. The mode button will be locked once charging begins, so select your mode before connecting to AC power or immediately after if the charger is already connected to the battery.
- AGM Batteries Mode: For AGM batteries.
- CAR Batteries Mode: For GEL, SLA, WET, DEEP CYCLE, EFB, and Calcium batteries.
- MOTO Batteries Mode: For Motorcycle batteries.
- LiFePO4 Batteries Mode: Specifically for LiFePO4 batteries.
- Repair Mode (16 hours): An advanced battery recovery mode for repairing and restoring old, idle, damaged, stratified, or sulfated batteries.
Figure 6: Diagram illustrating the various charging modes available on the FOXSUR charger, including AGM, CAR, MOTO, LiFePO4, and Repair modes, selectable via the MODE button.
Figure 7: The charger is suitable for most battery types found in various vehicles such as cars, motorcycles, ATVs, golf carts, marine vehicles, and lawn mowers.
Figure 8: The charger supports a wide range of battery types including AGM/GEL, EFB/WET, LEAD-ACID, and LiFePO4 batteries.
7. Maintenance
7.1. Charger Maintenance
- Keep the charger clean and dry. Wipe the casing with a soft, damp cloth. Do not use harsh chemicals or abrasives.
- Store the charger in a cool, dry place when not in use.
- Inspect the cables and clamps regularly for any signs of damage or wear. Replace if necessary.
7.2. Battery Maintenance
Regular use of the FOXSUR charger can help maintain your battery's health. The charger is suitable for maintaining Maintenance Free, MF, Dry, Wet, AGM, Gel, EFB, Deep Cycle, Ca, and LiFePO4 batteries.
- For lead-acid batteries, check electrolyte levels periodically if applicable and top up with distilled water as needed.
- Keep battery terminals clean and free of corrosion.
- Use the charger's maintenance or float mode for long-term battery storage to prevent self-discharge.
Figure 9: The charger helps maintain various battery types (Maintenance Free, MF, Dry, Wet, AGM, Gel, EFB, Deep Cycle, Ca, LiFePO4) and supports multi-voltage auto-detection for 12V and 24V batteries across a wide range of vehicles.
8. Troubleshooting
If you encounter issues with your FOXSUR battery charger, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Charger not turning on / No display | No AC power; Incorrect battery connection; Battery voltage too low. | Check AC outlet and power cord. Ensure correct polarity (+ to +, - to -). Battery must have at least 8.0V to initiate charging. |
| "Err" displayed on screen | Reverse polarity; Short circuit; Over-voltage; Severely damaged battery. | Disconnect and re-connect with correct polarity. Check for short circuits in cables. Verify battery voltage is within acceptable range. The charger cannot repair severely damaged or completely dead batteries. |
| Battery not charging or charging slowly | Incorrect mode selected; Battery is sulfated/damaged; Battery capacity too large for charger. | Ensure the correct charging mode is selected for your battery type. Use "Repair Mode" for sulfated batteries (note limitations). For very large batteries (e.g., >180Ah), charging time will be extended. |
| Charger gets warm during operation | Normal operation; Insufficient ventilation. | Some warmth is normal. Ensure the charger is in a well-ventilated area and its cooling fan is not obstructed. The charger has over-temperature protection. |
Important Note: This charger cannot activate a completely dead battery (below 8.0V) or repair a battery that is seriously damaged. It also cannot restore a battery to 100% new condition.
9. Warranty and Support
For warranty information and technical support, please refer to the contact details provided with your product packaging or visit the official FOXSUR website. Keep your purchase receipt as proof of purchase for warranty claims.
For additional assistance, you may contact the seller directly through the platform where the product was purchased.
