Introduction
This user manual provides essential information for the safe and efficient operation of your DATOUBOSS 12V 200Ah LiFePO4 Lithium Battery. Please read this manual thoroughly before installation and use to ensure optimal performance and longevity of your battery.
Safety Information
Always observe the following safety precautions when handling and operating the battery:
- Do not short-circuit the positive and negative poles.
- Do not modify or disassemble the battery without authorization.
- Do not throw the battery into fire or water.
- Use only the standard charger that matches the output voltage of the lithium battery.
- Keep the battery away from children.
- Avoid extreme temperatures during storage and operation.
- Wear appropriate personal protective equipment (PPE) when handling batteries.

The battery label clearly indicates important safety warnings, including prohibitions against short-circuiting, unauthorized modification, disposal in fire or water, and the requirement to use a compatible charger.
Product Overview
The DATOUBOSS 12V 200Ah LiFePO4 Lithium Battery is a high-performance, deep-cycle battery designed for various applications, including RVs, solar systems, marine use, and household backup power. It features advanced LiFePO4 cell technology and an integrated Battery Management System (BMS) for enhanced safety and durability.
Key Features:
- Premium Quality: Constructed with automotive-grade lithium iron phosphate cells and an ABS casing for high energy density and stable performance.
- Comprehensive BMS Protection: Equipped with a 200A integrated BMS offering automatic balancing and protection against overcharge, deep discharge, overcurrent, overvoltage, and extreme temperatures.
- Durable Deep Cycle Battery: Utilizes advanced Class A LiFePO4 cells, providing over 5000 cycles and an expected lifespan of 10 years, significantly outperforming lead-acid batteries.
- Series and Parallel Connection Support: Flexible configuration for various voltage (24V, 36V, 48V) and capacity (200Ah - 800Ah) requirements, with a maximum power output of 4.096kWh (4P4S, 51.2V 800Ah).
- Wide Application Range: Ideal for off-grid solar systems, outdoor camping, RV power, boat propulsion, and powering common household appliances.

This image illustrates the internal structure of the battery, highlighting the integrated Battery Management System (BMS) and the arrangement of the LiFePO4 cells, emphasizing the robust design for safe operation and long lifespan.

A visual representation of the comprehensive protection features offered by the 200A BMS, including overcharge, over-discharge, overvoltage, overcurrent, overload, short circuit, and temperature protection.

This chart compares the DATOUBOSS LiFePO4 battery with a lead-acid battery, showcasing the LiFePO4's benefits such as lighter weight (40.2 lbs vs 80 lbs), integrated 200A BMS, 100% DoD, 10000+ cycles, 10+ years lifespan, and environmental protection.

A detailed diagram illustrating the physical dimensions of the battery and the M8 terminal size, useful for planning installation space.

This graphic highlights the superior characteristics of LiFePO4 batteries over traditional flooded batteries, such as extended lifespan, reduced weight, enhanced safety, and minimal maintenance requirements.

The battery is designed to perform reliably across a wide temperature range, from very cold conditions at -4°F to hot environments at 150°F, ensuring consistent power delivery.

This image showcases the versatility of the DATOUBOSS LiFePO4 battery, suitable for diverse uses such as marine propulsion, off-road vehicles, and recreational golf carts.
Specifications
| Attribute | Value |
|---|---|
| Product Name | LiFePO4 Battery |
| Rated Capacity | 200Ah / 2560Wh |
| Rated Voltage | 12.8V |
| Voltage Range | 10-14.6V |
| Maximum Continuous Charging Current | 100A |
| Maximum Continuous Discharging Current | 200A |
| Charging Voltage | 14.4±0.2V |
| Dimensions (LxWxH) | 52.6cm x 23.5cm x 22cm (20.7in x 9.3in x 8.7in) |
| Weight | 18 kg (40.2 lbs) |
| Charging Temperature | 0°C to 45°C (32°F to 113°F) |
| Discharging Temperature | -20°C to 65°C (-4°F to 150°F) |
| Cycle Life | 5000-15000 cycles |
| Lifespan | 10+ years |
Setup and Installation
Before installation, ensure all components are present and undamaged. Follow these general guidelines for setting up your DATOUBOSS LiFePO4 battery:
- Inspection: Visually inspect the battery for any physical damage.
- Ventilation: Install the battery in a well-ventilated area, free from flammable materials.
- Mounting: Secure the battery in a stable position to prevent movement or vibration.
- Wiring: Connect the battery terminals using appropriate gauge cables. Ensure correct polarity (positive to positive, negative to negative). Incorrect polarity can cause severe damage.
- Series/Parallel Connection: If connecting multiple batteries, refer to the "Operating Instructions" section for detailed guidance on series and parallel configurations.
- Charger Connection: Connect a compatible LiFePO4 charger to the battery. Ensure the charger's voltage matches the battery's requirements (14.4±0.2V for charging).
Operating Instructions
Charging
Use a dedicated LiFePO4 battery charger with a charging voltage of 14.4±0.2V and a maximum continuous charging current of 100A. Avoid using chargers designed for lead-acid batteries, as this can damage the LiFePO4 battery.
- Connect the charger's positive terminal to the battery's positive terminal and the charger's negative terminal to the battery's negative terminal.
- Ensure the charging temperature is within 0°C to 45°C (32°F to 113°F).
- The integrated BMS will manage the charging process, preventing overcharge.
Discharging
The battery supports a maximum continuous discharging current of 200A. Ensure your load does not exceed this limit to prevent the BMS from triggering protection and disconnecting the power.
- Connect your load to the battery terminals, observing correct polarity.
- The discharging temperature range is -20°C to 65°C (-4°F to 150°F).
- The BMS will protect against deep discharge by disconnecting the battery when the voltage drops below a safe threshold.
Series and Parallel Connection
The DATOUBOSS LiFePO4 battery supports both series and parallel connections to achieve higher voltage or capacity. Always use batteries of the same brand, model, and capacity for optimal performance and safety.
Parallel Connection (for increased capacity, same voltage):
Connect positive terminals together and negative terminals together. For example, connecting four 12V 200Ah batteries in parallel will result in a 12V 800Ah system.
Series Connection (for increased voltage, same capacity):
Connect the positive terminal of one battery to the negative terminal of the next. For example, connecting four 12V 200Ah batteries in series will result in a 48V 200Ah system.
Important: When connecting in series or parallel, ensure all batteries are fully charged and balanced to the same voltage before making connections. Use appropriate cabling for the combined current and voltage.
Maintenance
DATOUBOSS LiFePO4 batteries require minimal maintenance compared to lead-acid batteries. However, following these guidelines will help ensure maximum lifespan:
- Regular Inspection: Periodically check the battery terminals for corrosion and ensure connections are tight.
- Cleaning: Keep the battery clean and free from dust and debris. Use a dry cloth for cleaning.
- Storage: If storing the battery for an extended period, charge it to approximately 50-70% of its capacity and store it in a cool, dry place. Recharge every 3-6 months to prevent self-discharge.
- Avoid Deep Discharge: While the BMS protects against deep discharge, it is good practice to avoid consistently running the battery to its lowest voltage.
- Temperature Management: Operate and store the battery within the recommended temperature ranges to prevent performance degradation.
Troubleshooting
If you encounter issues with your DATOUBOSS LiFePO4 battery, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Battery not charging | Charger not connected, faulty charger, incorrect charger type, BMS protection activated. | Check charger connections. Ensure charger is compatible with LiFePO4. Verify charger output. If BMS is active, disconnect load/charger for a few minutes to reset. |
| Battery not discharging / No power output | Load too high, short circuit, deep discharge protection, over-temperature protection, loose connections. | Reduce load. Check for short circuits in wiring. Recharge battery if deeply discharged. Allow battery to cool if overheated. Tighten all connections. |
| Reduced capacity or runtime | Battery not fully charged, aging, extreme operating temperatures. | Ensure battery is fully charged. Operate within recommended temperature ranges. If battery is old, capacity may naturally decrease over time. |
| Battery terminals are hot | Loose connections, excessive current draw. | Tighten terminal connections. Reduce current draw to stay within specified limits. |
Warranty and Support
DATOUBOSS products are manufactured to high-quality standards. For warranty information, technical support, or service inquiries, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase.
Manufacturer: DATOUBOSS
Model Number: 12V200Ah