1. Introduction
The EAFC RJ-C121501A is an intelligent 12V/24V automatic pulse repair battery charger designed for a wide range of vehicles including cars, motorcycles, SUVs, and more. Featuring a digital LCD touch screen display, it offers easy and accurate monitoring of your battery's status. This smart charger supports various battery types, including lead-acid, AGM, GEL, and LiFePO4, and incorporates advanced nine-stage charging and pulse repair functions to optimize battery performance and extend its lifespan. Its compact and portable design makes it a convenient tool for maintaining your vehicle's battery health.
2. Safety Information
⚠ WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
- Always ensure proper ventilation when charging batteries.
- Avoid open flames or sparks near the battery during charging.
- Wear appropriate personal protective equipment, such as safety glasses and gloves.
- Do not charge frozen batteries.
- Ensure the charger is disconnected from the power supply before making or breaking connections to the battery.
- Do not attempt to charge LiFePO4 batteries without a Battery Management System (BMS).
- Keep out of reach of children.
3. Product Features
- Touch Screen Digital LCD Display: Provides clear, real-time information on battery status, voltage, current, and temperature.
- Smart Fast Charging: Designed for efficient and rapid charging of compatible batteries.
- Wide Compatibility: Supports 12V (2Ah-200Ah) and 24V (2Ah-100Ah) lead-acid, AGM, GEL, and LiFePO4 batteries.
- Automatic Pulse Repair: Helps to restore sulfated or deeply discharged batteries, extending their life.
- Nine-Stage Charging Process: Optimizes charging for different battery conditions, ensuring thorough and safe charging.
- Temperature Compensation: Automatically adjusts charging voltage based on ambient temperature (summer mode >28°C, winter mode <10°C) to prevent overcharging or undercharging.
- Efficient Mute Cooling Fan: Ensures continuous operation without overheating, enhancing durability.
- Intelligent Chip Memory Mode: Remembers the last used charging mode (except repair mode) for convenience.
- Error-Proof Touch Protection: Buttons lock after 25 seconds in charging state to prevent accidental mode changes. Disconnect clips or power to unlock.
- Thickened Pure Copper Soft Core Cables: Ensures stable current output, durability, and safety.
- Hanging Hole Design: Allows for convenient and secure mounting of the charger.
4. Specifications
| Parameter | Value |
|---|---|
| Model | RJ-C121501A |
| Brand Name | EAFC |
| Dimensions (L*W*H) | 155*88*66mm |
| Net Weight | 630g |
| Input Voltage | AC110-230V (50-60Hz) |
| Output Current | DC12V15A / 24V8A (Max) |
| Output Voltage | 12V-15.5V / 24V-31V (-15°C to 45°C voltage automatic compensation) |
| Output Cable Length | Approx. 65cm |
| Input Cable Length | Approx. 150cm |
| Scope of Application (12V) | 2Ah-200Ah Lead-Acid Battery |
| Scope of Application (24V) | 2Ah-100Ah Lead-Acid Battery |
| Protection Function | Overcharge protection |
5. Package Contents
The package typically includes:
- 1 x EAFC RJ-C121501A Battery Charger
- 1 x User Manual (this document)
Note: Power plug type (EU/US) will vary based on your selection.
6. Setup and Installation
Follow these steps to safely connect and begin using your EAFC battery charger:
- Prepare the Battery: Ensure the battery terminals are clean and free of corrosion.
- Connect the Clamps:
- Connect the RED (+) clamp to the positive battery terminal.
- Connect the BLACK (-) clamp to the negative battery terminal.
Ensure a secure connection. The charger's display will activate once connected to a battery.
Figure 3: Correct connection of charger clamps to a 12V battery. - Connect to Power Supply: Plug the charger's power cord into a standard AC110-230V (50-60Hz) household power outlet.
- Select Charging Mode: Use the 'MODE' button on the charger's touch screen to select the appropriate battery type (e.g., CAR, AGM, GEL, LiFePO4, MOTO, REPAIR).
7. Operating Instructions
7.1. LCD Display Overview
The large LCD color display provides comprehensive information:
- Power Display: Shows current battery charge level.
- Rotation Display: Cycles through current, voltage, and temperature.
- Status Indicators: Reverse connection/Abnormality, Winter/Summer mode, Recharging, Repair, Charging Complete.
- Mode Selection: Icons for CAR, AGM, GEL, LiFePO4, MOTO, REPAIR.
7.2. Battery Testing
Before charging, the unit can test the battery's health (SOH - State of Health), voltage, and State of Charge (SOC). The display will show 'PERFECT' (SOH ≥ 85%), 'GOOD' (SOH ≥ 60%), or 'BAD' (SOH < 60%).
7.3. Charging Process
The charger utilizes a nine-stage charging process (8-stage for start-stop/charging mode) to ensure optimal battery health:
- Battery Detection: Analyzes battery condition.
- De-vulcanization: Helps break down sulfate crystals.
- Half-power Constant Current: Initial charging phase.
- Full-power Constant Current: Main charging phase.
- Constant Voltage Charging: Maintains a steady voltage.
- Repair: Pulse repair for damaged batteries.
- Floating Charging: Maintains full charge.
- Yangdian: (Specific to certain battery types/regions, typically a final conditioning phase).
- Switch an External Device Off: Signals completion.
7.4. Special Modes
- Trickle Charge Mode: Keeps batteries charged and maintained over extended periods, ideal for winter storage or travel. The charger auto-detects voltage and restarts charging if it drops below 12.5V.
- Pulse Repair Mode: Designed to address common battery issues like poor performance, long-term disuse, or insufficient cold voltage.
7.5. Temperature Recognition
The microcomputer automatically recognizes ambient temperature and adjusts the charging voltage accordingly. This ensures optimal charging in different seasons:
- Summer Mode: Automatically activated when temperature is >28°C.
- Winter Mode: Automatically activated when temperature is <10°C.
Between 10°C and 27°C, the constant temperature mode is used, and no specific icon is displayed.
7.6. Sleep Mode and Buzzer
- To turn the buzzer on or off, press and hold the 'MODE' key for 5 seconds.
- After charging for 30 minutes, the charger will automatically enter sleep mode to conserve power. The screen will turn off.
- To exit sleep mode, press the 'MODE' key.
8. Maintenance
- Cleaning: Wipe the charger with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the charger in a cool, dry place when not in use.
- Cable Inspection: Regularly inspect the charging cables and clamps for any signs of damage or wear. Replace if necessary.
- Ventilation: Ensure the cooling fan is not obstructed during operation. The charger features an efficient mute cooling fan to prevent overheating.
9. Troubleshooting
If you encounter issues with your charger, consider the following:
- Charger not turning on: Ensure the power cord is securely plugged into a live outlet and the battery clamps are correctly connected to the battery terminals.
- Charging not starting: Verify that the correct battery type mode is selected. Check if the battery voltage is extremely low (below 2V for 12V batteries, or 10V for 24V batteries), which might prevent the charger from initiating.
- Error message on display: Refer to the display indicators (e.g., reverse connection/abnormality). Disconnect and reconnect the battery and power supply to reset.
- Battery not charging fully: Ensure the battery is within the specified capacity range (12V 2Ah-200Ah; 24V 2Ah-100Ah). Check for extreme temperatures, as the charger adjusts output based on temperature.
- Buttons unresponsive: If the charger has been in charging state for about 25 seconds, the buttons may be locked for touch protection. Disconnect the clips or power supply to unlock.
10. User Tips
- Verify Model and Plug Type: Some users have noted variations between product photos and videos. Always double-check the model number (RJ-C121501A) and ensure you receive the correct plug type (EU or US) for your region.
- LiFePO4 Battery Safety: It is crucial to only charge LiFePO4 batteries that are equipped with a Battery Management System (BMS). Charging LiFePO4 batteries without a BMS can be dangerous.
- Optimal Battery Health: Utilize the pulse repair function periodically for older or underperforming batteries to help extend their lifespan.
- Long-Term Storage: For vehicles stored over winter or for extended periods, use the trickle charge mode to maintain battery health without overcharging.
11. Warranty and Support
For warranty claims, technical support, or service inquiries, please contact your original point of purchase or the manufacturer directly. Keep your purchase receipt as proof of purchase.
