Product Overview
The Redodo 12V 20Ah LiFePO4 Battery is a high-performance, lightweight, and compact energy storage solution designed for various applications. Featuring a built-in 20A Smart Battery Management System (BMS), it ensures safety and longevity with extensive protection features.

Image: Two Redodo 12.8V 20Ah LiFePO4 batteries, highlighting their compact design and branding.
Key Features:
- Lightweight & Compact Design: Weighs only 4.92 lbs, approximately half the weight of traditional AGM batteries, with dimensions of L7.17*W3.03*H6.77 inches.
- Rapid Charging Capability: Supports a maximum 1C charge rate, allowing full charge in about one hour.
- Extended Cycle Life: Offers 4000 to 15000 deep cycles, providing a lifespan of up to 10 years.
- Flexible System Configuration: Can be connected in up to 4 parallel and 4 series configurations (4P4S), supporting up to 16 batteries for a total capacity of 4.096 KWh.
- Integrated 20A Smart BMS: Provides protection against high temperature, short circuit, overvoltage, and overcurrent.
- Versatile Applications: Suitable for various uses including fish finders, 12V DC lighting, outdoor camping, and ice fishing.
Safety Guidelines
Adhering to safety guidelines is crucial for the safe operation and longevity of your LiFePO4 battery. Please read and understand all instructions before use.
- Avoid Short Circuits: Do not short-circuit the battery terminals. Ensure proper insulation and secure connections.
- Use Compatible Chargers: Only use chargers specifically designed for LiFePO4 batteries. Using incompatible chargers can damage the battery or pose a safety risk.
- Temperature Management: Do not expose the battery to extreme temperatures outside its specified operating and storage ranges.
- Prevent Physical Damage: Avoid dropping, puncturing, or subjecting the battery to strong impacts.
- No Disassembly: Do not attempt to disassemble, modify, or repair the battery. This can lead to severe injury or damage and will void the warranty.
- Ventilation: Ensure adequate ventilation around the battery, especially during charging and heavy discharge, to prevent heat buildup.
What's in the Box
Your Redodo 12V 20Ah LiFePO4 Battery package includes the following items:
- 12V 20Ah Battery (2 Pack)
- Insulating Caps for Bolts
- M5 (8mm) Terminal Bolts
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Redodo |
| Size | 2 Pack |
| Item Weight | 4.92 Pounds |
| Product Dimensions | 3.03"D x 7.17"W x 6.77"H |
| Number Of Cells | 1 |
| Resistance | 40 Ohms |
| Terminal | M5 |
| Model | 12V 20Ah Deep Cycle Lithium Battery |
| Item Model Number | R12V20-20-2 Pack |
Setup and Installation
Initial Charge
It is recommended to fully charge your Redodo 12V 20Ah LiFePO4 battery before its first use to ensure optimal performance and longevity. Use a compatible LiFePO4 charger for this process.
Connecting the Battery
Ensure all connections are secure and correct polarity is observed (positive to positive, negative to negative) to prevent damage to the battery or connected devices. Use the provided M5 terminal bolts and insulating caps for safe and reliable connections.

Image: Close-up view of the Redodo 12V 20Ah LiFePO4 battery's M5 terminals, showing the positive and negative posts with insulating caps.
Series and Parallel Connections
The Redodo 12V 20Ah LiFePO4 battery offers flexible versatility, supporting up to 4 parallel (4P) and 4 series (4S) connections. This allows you to connect a maximum of 16 batteries together, creating a total capacity of 4.096 KWh. When connecting batteries in series or parallel, ensure all batteries have the same voltage and capacity for balanced performance.

Image: A diagram illustrating various configurations for connecting Redodo LiFePO4 batteries in series (up to 4S) and parallel (up to 4P) to achieve desired voltage and capacity.
Operating Your Battery
Charging Methods
The 12V 20Ah LiFePO4 battery can be charged using several methods, providing flexibility for various setups:
- Solar Panel: Use a solar panel (≥100W) with a compatible solar charge controller.
- Generator: Connect a generator with an AC-DC charger.
- Alternator: Utilize your vehicle's alternator with a DC-DC charger.
- Dedicated LiFePO4 Charger: Use a specific LiFePO4 battery charger for optimal performance.

Image: A visual representation of four different charging methods for the Redodo LiFePO4 battery, including solar, generator, alternator, and a dedicated LiFePO4 charger.
Application Examples
The Redodo 12V 20Ah LiFePO4 battery is highly versatile and suitable for a wide array of applications, especially where lightweight and long-lasting power is essential:
- Fish Finders: Provides reliable power for extended use on the water.
- Outdoor Camping: Powers 12V DC lighting and other small electronic devices.
- Ice Fishing: Operates efficiently in low-temperature environments.
- Portable Power: Its compact size makes it ideal for portable power needs.

Image: A Redodo 12V 20Ah LiFePO4 battery powering a fish finder on a small boat, demonstrating its use in marine applications.
Operating Temperature Range
The battery is designed to operate within specific temperature ranges to ensure safety and performance:
- Discharge Temperature: -4°F to 140°F (-20°C to 60°C)
- Charge Temperature: 32°F to 122°F (0°C to 50°C)
- Storage Temperature: 14°F to 122°F (-10°C to 50°C)

Image: A man ice fishing with a Redodo LiFePO4 battery powering his equipment, demonstrating the battery's capability in low-temperature environments.
Maintenance and Storage
Proper maintenance and storage will maximize the lifespan and performance of your Redodo LiFePO4 battery.
- Storage Environment: Store the battery in a cool, dry place away from direct sunlight, heat sources, and flammable materials.
- Charge Level for Storage: If storing the battery for extended periods, ensure it has a partial charge (ideally around 50% State of Charge) to prevent deep discharge.
- Prevent Short Circuits: Avoid storing the battery with loose metal objects that could accidentally bridge the terminals and cause a short circuit.
- Terminal Inspection: Regularly inspect the battery terminals for any signs of corrosion or loose connections. Clean terminals as needed and ensure all connections are tight.
Troubleshooting
This section provides solutions for common issues you might encounter with your Redodo LiFePO4 battery.
| Issue | Possible Cause | Solution |
|---|---|---|
| Battery not charging | Charger not connected, charger fault, low temperature protection activated | Check charger connection, ensure charger is functional, move battery to warmer environment (above 32°F/0°C) |
| Battery not discharging/No power output | Over-discharge protection, over-current protection, high temperature protection, short circuit, BMS fault | Recharge battery, reduce load, move battery to cooler environment, check for short circuits, contact support if BMS fault suspected |
| Reduced performance/Shortened runtime | Aging battery, improper charging/discharging, excessive load | Ensure proper usage according to guidelines, reduce load, consider battery replacement if significantly aged (beyond 10 years or 4000+ cycles) |
Warranty and Support
Redodo is committed to providing high-quality products and excellent customer service.
Warranty Information
- The Redodo 12V 20Ah LiFePO4 Battery comes with a 5-year warranty.
- This warranty covers defects in materials and workmanship under normal use and service.
Contact Support
For any questions, technical assistance, or warranty claims, please do not hesitate to contact our dedicated customer support team. Our team provides expert advice and prompt solutions, aiming to analyze and resolve any issues within 24 hours.
Please refer to your purchase documentation or the Redodo official website for specific contact details.





