1. Introduction
Thank you for choosing the FOXSUR 12V 7A Smart Car Battery Charger. This intelligent charger is designed to provide efficient and safe charging for a wide range of 12V batteries, including AGM, GEL, Flooded (Wet), Calcium, Deep Cycle, VRLA, Maintenance-Free, Lead-Acid, and LiFePO4 batteries. Featuring a large-screen digital display, multiple charging modes, and advanced protection features, it ensures optimal battery performance and longevity. Please read this manual carefully before use to ensure proper operation and safety.

Figure 1: FOXSUR 12V 7A Smart Car Battery Charger
2. Safety Instructions
- Always wear eye protection and protective clothing when working with batteries.
- Ensure adequate ventilation during charging to prevent the accumulation of explosive gases.
- Do not charge frozen or damaged batteries.
- Keep the charger away from children and pets.
- Do not expose the charger to rain or moisture.
- Ensure the charger is disconnected from the power supply before making or breaking connections to the battery.
- This charger is equipped with multiple protections including over current, reverse polarity, overcharge, overheat, short circuit, and high voltage protection. However, always follow proper connection procedures.

Figure 2: Charger with comprehensive protection features
3. Product Overview
The FOXSUR Smart Car Battery Charger features a robust design with an intuitive digital LCD display and a mode selection button. It incorporates an intelligent chip for precise control, automatic power cut-off upon full charge, and intelligent detection and protection mechanisms.
Key Features:
- Large-Screen Digital Display: Provides clear and intuitive readings of voltage, current, and battery capacity.
- Intelligent Cooling Fan: Ensures efficient heat dissipation with minimal noise during operation.
- Multiple Charging Modes: Supports CAR, AGM, MOTO, and REPAIR modes for various battery types and conditions.
- Enlarged and Thickened Charging Clips: Designed for stable and secure connections, ensuring reliable charging.
- Smart Chip Control: Optimizes the charging process for efficiency and safety, including automatic stop when fully charged.

Figure 3: Front view of the charger with digital display

Figure 4: Smart Chip for Optimized Precision Control
4. Specifications
| Feature | Description |
|---|---|
| Item Name | 12V 7A Car Battery Charger |
| Size | 158mm x 85mm x 63mm |
| Net Weight | 440g |
| Input Voltage | AC 100-240V, 50-60Hz |
| Rated Output | 12V DC, 7A max. (peak value) |
| Charging Voltage | 14.7V ± 0.3V |
| Minimum Start Voltage | 8.0V |
| Battery Range | 4Ah - 140Ah |
| Battery Types Supported | 12V AGM, GEL, Flooded (Wet), Calcium, Deep Cycle, VRLA, Maintenance-Free, Lead-Acid, LiFePO4 batteries |
| Switchmode Technology | Yes |
| Polarity Protection | Yes |
| Output Short Protection | Yes |
| Non Battery Link Protection | Yes |
| Over Voltage Protection | Yes |
| Over Temperature Protection | Yes |
| Cooling | Fan |
| Thermal Protect | 65°C +/- 5°C |
| Efficiency | Approx. 85% |
| Compliant Standards | CE, UKCA, FCC |

Figure 5: Product Dimensions and Key Parameters
5. Setup Instructions
Follow these simple steps to set up your FOXSUR Smart Car Battery Charger:
- Step 1: Connect to Power Supply
Plug the charger's power cord into a standard household AC outlet (100-240V AC). - Step 2: Select Battery Type Mode
Press the 'MODE' button on the charger to cycle through the available charging modes (CAR, AGM, MOTO, REPAIR) and select the appropriate mode for your battery type. The selected mode will be indicated on the digital display. - Step 3: Connect to Battery
Connect the red positive (+) charging clip to the positive (+) terminal of your battery. Then, connect the black negative (-) charging clip to the negative (-) terminal of your battery. Ensure a secure connection.
Once connected, the charger will automatically begin the charging process according to the selected mode.

Figure 6: Simple Operation Steps

Figure 7: Charger connected to a battery
6. Operating Instructions
Mode Selection:
Press the 'MODE' button to switch between the following charging programs:
- CAR Mode: Most commonly used for 12V dry batteries, water batteries, lead-acid batteries, and maintenance-free batteries found in cars, SUVs, trucks, and engineering vehicles.
- AGM+LiFePO4 Mode: Specifically designed for AGM/EFB batteries and LiFePO4 batteries, offering a lifespan 3-5 times that of a regular battery.
- MOTO Mode: Ideal for charging small capacity 12V motorcycle lead-acid batteries.
- REPAIR Mode: An advanced pulse repair mode to address challenges such as battery feeding issues, inability to charge, or high internal resistance, helping to restore idle or old batteries.

Figure 8: Multiple Charging Modes
Digital Display:
The large digital display provides real-time information:
- Voltage (V): Shows the current battery voltage.
- Current (A): Displays the charging current.
- Power (%): Indicates the estimated battery capacity or charge level.
- CHARGE/FULL Indicators: Lights up to show charging status or when the battery is fully charged.
The charger automatically detects the battery status and adjusts the charging current and voltage accordingly. It will automatically stop charging once the battery is full to prevent overcharging.
Video 1: Demonstration of the FOXSUR 12V Smart Battery Charger's features, including the digital display and mode selection.
7. Maintenance
- Keep the charger clean and free from dust and debris.
- Store the charger in a dry, cool place when not in use.
- Regularly inspect the charging cables and clips for any signs of damage or wear. Replace if necessary.
- Do not attempt to open or repair the charger yourself. Refer to qualified service personnel for any repairs.
8. Troubleshooting
- Charger not turning on: Ensure the power cord is securely plugged into a live AC outlet. Check the outlet with another device.
- Battery not charging: Verify that the charging clips are correctly and securely connected to the battery terminals (red to positive, black to negative). Ensure the correct charging mode is selected for your battery type. Check if the battery voltage is below the minimum start voltage (8.0V).
- Overheat protection activated: If the charger becomes too hot, it will automatically reduce output or shut down. Ensure the cooling fan is not obstructed and the charger is in a well-ventilated area.
- Error messages on display: If an error code appears, disconnect the charger from both the power supply and the battery, wait a few minutes, and then reconnect. If the error persists, contact customer support.
9. User Tips
- Lithium Battery Compatibility: Yes, this charger is compatible with LiFePO4 batteries. Ensure you select the 'AGM+LiFePO4' mode for optimal charging of these battery types.
- Battery Capacity: The charger is suitable for 12V batteries with capacities ranging from 4Ah to 140Ah.
- Pulse Repair Function: For older or underperforming batteries, try using the 'REPAIR' mode. This mode can help desulfate and recondition batteries, potentially extending their lifespan.
10. Warranty and Support
This product comes with a manufacturer's warranty. For warranty claims, technical support, or any questions regarding the product, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.





