1. Introduction
This manual provides essential information for the safe and efficient operation of your Redodo 24V 20A Lithium Battery Charger. Designed specifically for 25.6V LiFePO4 batteries, this charger offers stable and efficient charging performance. Please read this manual thoroughly before use and retain it for future reference.
2. Safety Instructions
Always observe the following safety precautions to prevent injury or damage to the charger and battery:
- Compatibility: This charger is exclusively designed for 25.6V LiFePO4 (Lithium Iron Phosphate) batteries. Do not attempt to charge other battery types (e.g., lead-acid, Ni-Cd, Ni-MH) as this may cause damage, fire, or explosion.
- Ventilation: Ensure adequate ventilation during charging. Do not cover the charger or operate it in an enclosed space.
- Environment: Use the charger in a dry, well-ventilated area, away from direct sunlight, heat sources, and flammable materials. Avoid exposure to water or excessive humidity.
- Connections: Always connect the charger to the battery terminals correctly (positive to positive, negative to negative). Reverse polarity can cause damage to the charger and battery.
- Power Supply: Connect the AC power cable to a grounded outlet with the correct voltage (100-240V AC).
- Damage: Do not operate the charger if it has been dropped, damaged, or exposed to water. Contact customer support for assistance.
- Children: Keep the charger out of reach of children.
- Disassembly: Do not attempt to disassemble, modify, or repair the charger. This will void the warranty and may lead to hazards.
The charger includes comprehensive protection against short circuits, over-current, reverse polarity, over-voltage, under-voltage, and overheating for safe operation.
Image: The charger features multiple safety protections, including over-temperature, reverse polarity, output undervoltage, output overvoltage, output short circuit, and output overcurrent protection.
3. Package Contents
Verify that all items are present in the package:
- 1 x Redodo 29.2V 20A LiFePO4 Charger
- 1 x DC Power Cord (1.2m)
- 1 x Instruction Manual
- 1 x Mounting Bracket Set
- 1 x Install Screws Set
- 1 x AC Power Cord (1.2m)
- 1 x Anderson Plug Connection Cable (0.25m) with M8 ring terminals
Image: An illustration showing all components included in the Redodo 24V 20A Lithium Battery Charger package, including the charger, cables, mounting hardware, and manual.
4. Product Features
- Dedicated LiFePO4 Charging: Specifically designed for 25.6V lithium iron phosphate batteries, providing a stable 29.2V output.
- Fast Charging: Delivers up to 20A charging current for efficient and rapid battery replenishment.
- Battery Activation: Equipped with technology to activate deeply discharged batteries.
- Intelligent 3-Stage Charging: Utilizes Pre-Charge, Constant Current, and Constant Voltage stages to optimize charging and extend battery lifespan.
- Compact Design: Mini size (229.5 × 90.5 × 63.5mm) and lightweight (approx. 1.3kg) for easy portability and installation.
- Durable Construction: Features a robust aluminum housing and an internal cooling fan for effective heat dissipation and long-term reliability.
- Comprehensive Safety: Built-in protections against short circuits, over-current, reverse polarity, over-voltage, under-voltage, and overheating.
- Clear LED Indicators: Provides visual status of the charging process.
Image: The charger's compact dimensions (9.04 inches L, 2.5 inches W, 3.56 inches H) and light weight (2.87 lbs) are highlighted.
Image: A close-up view of the charger's durable aluminum shell and integrated cooling fan, designed for efficient heat dissipation.
5. Installation and Connection
Follow these steps to properly connect your Redodo charger:
- Placement: Place the charger on a stable, flat surface in a well-ventilated area. Ensure there is sufficient space around the charger for airflow. Mounting brackets are included for fixed installation if desired.
- Battery Connection: Connect the DC output cable from the charger to your 25.6V LiFePO4 battery. The charger includes a 50A Anderson connector and M8 ring terminals for versatile connection options. Ensure the positive (+) terminal of the charger connects to the positive (+) terminal of the battery, and the negative (-) terminal of the charger connects to the negative (-) terminal of the battery.
- AC Power Connection: Once the DC connection to the battery is secure, plug the AC power cable into a standard 100-240V AC wall outlet.
Image: A diagram showing the Redodo charger connected to a 25.6V 100Ah LiFePO4 battery, illustrating the 29.2V output voltage and 20A output current.
6. Operation
The Redodo charger features an intelligent 3-stage charging mode and clear LED indicators to monitor the charging process.
6.1 LED Indicators
The charger is equipped with LED indicators to show its status:
- Always On Red: Charging in progress.
- Always On Green: Battery fully charged.
- Flashes Green: Standby mode (charger is connected to AC power but not charging).
- Flashes Red: Charger fault or under protection (e.g., reverse polarity, over-temperature).
Image: A close-up of the charger's LED indicators, showing the different light patterns and their corresponding statuses (Charging, Standby, Fully Charged, Fault).
6.2 3-Stage Charging Mode
The charger employs a sophisticated 3-stage charging process to ensure optimal battery health and performance:
- Pre-Charging Stage (T1): Activates deeply discharged batteries with a small current to prepare them for full charging.
- Constant Current Charging Stage (T2): Provides a continuous charging current of 20A, rapidly charging the battery.
- Constant Voltage Charging Stage (T3): The current gradually reduces as the battery approaches full charge, ensuring the battery is safely and completely charged. Charging is completed when the current drops to a minimal level.
Image: A graph depicting the three stages of the charging process (Pre-Charge, Constant Current, Constant Voltage) over time, showing how voltage and current change during each stage.
The Redodo 24V 20A charger is designed to provide faster charging compared to conventional chargers. For example, a 25.6V 100Ah LiFePO4 battery can be fully charged in approximately 5 hours.
Image: A visual comparison showing the Redodo 29.2V 20A Mini Charger fully charging a 25.6V 100Ah LiFePO4 battery in 5 hours, while other chargers take longer to reach 80%.
7. Maintenance
To ensure the longevity and optimal performance of your Redodo charger:
- Cleaning: Keep the charger clean and free from dust and debris. Use a soft, dry cloth for cleaning. Do not use liquid cleaners or solvents.
- Storage: When not in use, store the charger in a cool, dry place, away from extreme temperatures and moisture.
- Cable Inspection: Regularly inspect the AC and DC cables for any signs of damage, fraying, or loose connections. Replace damaged cables immediately.
- Ventilation: Ensure the cooling fan and vents are not obstructed to maintain proper heat dissipation.
8. Troubleshooting
If you encounter issues with your charger, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Charger not turning on (no LED activity) | No AC power; Faulty AC cable; Charger malfunction. | Check AC outlet and cable connection. Try a different outlet. If still unresponsive, contact support. |
| Red LED flashing | Charger fault or protection activated (e.g., reverse polarity, over-temperature, short circuit). | Disconnect from AC and battery. Check battery connections for correct polarity. Allow charger to cool if hot. Reconnect. If issue persists, contact support. |
| Battery not charging (Green LED flashing, not Red) | Loose DC connection; Battery not compatible; Battery deeply discharged and not activating. | Ensure DC cables are securely connected to the battery. Verify battery is a 25.6V LiFePO4. Allow time for battery activation. |
| Slow charging | Battery capacity is very large; Environmental factors. | Charging time depends on battery capacity and state of charge. Ensure charger is in a well-ventilated area. |
9. Specifications
| Feature | Specification |
|---|---|
| Brand | Redodo |
| Model Number | 29.2V 20A Mini Lithium Battery Charger |
| Compatible Devices | 25.6V LiFePO4 batteries |
| Input Voltage | 100-240V AC |
| Output Voltage | 29.2V |
| Current Rating / Amperage | 20 A |
| Product Dimensions (D x W x H) | 3.56" x 9.04" x 2.5" (90.5 x 229.5 x 63.5 mm) |
| Item Weight | 2.9 pounds (1.3 kg) |
| Color | Black |
| Connector Type | Anderson |
| Certifications | CE, FCC, RoHS |
10. Warranty and Support
The Redodo 24V 20A Lithium Battery Charger comes with a 2-year quality warranty.
For technical support, warranty claims, or any questions regarding your product, please contact Redodo customer service. We provide professional technical support and customer service via phone or online services with quick feedback within 24 hours.
Please visit the official Redodo website or your point of purchase for contact information.