1. 서론
This manual provides essential information for the safe and efficient use of your EF ECOFLOW DELTA Pro Ultra X Extra Battery. This extra battery unit is designed to expand the capacity of your DELTA Pro Ultra X power station, offering increased energy storage for home backup, emergency situations, and off-grid power needs. It features a plug-and-play design for easy integration and utilizes advanced LiFePO4 battery technology for durability and safety.

Image 1.1: The DELTA Pro Ultra X system with multiple extra batteries, demonstrating its expandable capacity from 12kWh to 180kWh.
2. 안전 정보
본 제품을 사용하기 전에 모든 안전 경고 및 지침을 읽고 숙지하십시오. 이 지침을 따르지 않을 경우 감전, 화재, 심각한 부상 또는 재산 피해가 발생할 수 있습니다.
- Do not disassemble, repair, or modify the battery unit.
- 제품을 물, 열원 및 직사광선으로부터 멀리하십시오.
- Use only the specified connection cables and accessories provided by EF ECOFLOW.
- 사용 및 충전 시에는 적절한 환기를 유지하세요.
- 배터리는 서늘하고 건조한 곳에 보관하고, 인화성 물질로부터 멀리하십시오.
- 화재가 발생하면 건조 분말 소화기를 사용하십시오.
통합 안전 기능
The DELTA Pro Ultra X Extra Battery incorporates multiple safety mechanisms:
- EV-Grade LFP Cells: Utilizes high-quality Lithium Iron Phosphate cells for enhanced safety and longevity.
- Dual BMS Protection: Features both local and cloud-based Battery Management Systems for comprehensive monitoring and protection against overcharge, over-discharge, extreme temperatures, and short circuits.
- 3-Level System Safety Architecture: Includes power protection, connection monitoring, and load isolation for robust electrical security.
- Smart Extreme-Weather Protection: Designed to operate safely in various environmental conditions, heating batteries in extreme cold for optimal performance.

Image 2.1: Visual representation of the Dual BMS Protection system, highlighting local and cloud-based monitoring.

Image 2.2: An illustration detailing the 3-Level System Safety Architecture, including power protection, connection monitoring, and load isolation.

Image 2.3: The battery unit shown with smart extreme-weather protection, indicating its ability to function in diverse temperatures.
3. 상자 안에 무엇이 들어있나요?
Upon unpacking your EF ECOFLOW DELTA Pro Ultra X Extra Battery, please verify that all the following components are included:
- EcoFlow Smart Extra Battery (DELTA Pro Ultra X) (x1)
- EcoFlow Battery Connection Cable (0.65ft) (x1)

Image 3.1: The EF ECOFLOW DELTA Pro Ultra X Extra Battery unit and its accompanying connection cable.
4. 설정
The DELTA Pro Ultra X Extra Battery is designed for simple plug-and-play integration with your main DELTA Pro Ultra X unit. Follow these steps to connect your extra battery:
- Ensure both the DELTA Pro Ultra X main unit and the extra battery are powered off before making any connections.
- Locate the battery expansion port on your DELTA Pro Ultra X main unit.
- Connect one end of the provided EcoFlow Battery Connection Cable to the expansion port on the main unit.
- Connect the other end of the cable to the corresponding port on the DELTA Pro Ultra X Extra Battery.
- Once connected, you can power on your DELTA Pro Ultra X system. The extra battery will be automatically recognized and integrated.

Image 4.1: A user connecting an extra battery to the main power station, demonstrating the plug-and-play setup.
5. 사용 설명서
Once connected, the extra battery operates in conjunction with your DELTA Pro Ultra X main unit. Its capacity is seamlessly added to the overall system.
- 전원 켜기/끄기: The extra battery powers on and off automatically with the main DELTA Pro Ultra X unit.
- 모니터링: Use the EcoFlow app to monitor the charge status, power input/output, and other parameters of the entire DELTA Pro Ultra X system, including the connected extra batteries.
- 충전 중: The extra battery charges simultaneously with the main unit when the DELTA Pro Ultra X is connected to a power source (AC, solar, or generator). The system intelligently manages the charging process for all connected batteries.
- 방전: Power is drawn from the combined capacity of all connected batteries as needed by your appliances.

Image 5.1: The DELTA Pro Ultra X system, including extra batteries, providing power to a home.
6. 유지관리
Proper maintenance ensures the longevity and optimal performance of your extra battery.
- 저장: If storing the battery for an extended period, ensure it is charged to approximately 50-80% and stored in a cool, dry environment (0°C to 40°C / 32°F to 104°F). Recharge every 3-6 months to prevent deep discharge.
- 청소: Use a dry, soft cloth to clean the exterior of the battery. Do not use liquid cleaners or solvents.
- 점검: Periodically check the connection cable and ports for any signs of damage or wear.
- 펌웨어 업데이트: Keep the EcoFlow app and your DELTA Pro Ultra X system firmware updated to ensure the best performance and access to new features.

이미지 6.1: 내부 view of the durable battery pack, emphasizing precision screening and self-maintenance features.
7. 문제 해결
If you encounter issues with your DELTA Pro Ultra X Extra Battery, refer to the following common problems and solutions:
| 문제 | 가능한 원인 | 해결책 |
|---|---|---|
| Extra battery not recognized | Loose connection cable; main unit not updated. | Ensure the connection cable is securely plugged into both units. Power cycle the main DELTA Pro Ultra X unit. Check for and install any available firmware updates via the EcoFlow app. |
| 배터리가 충전되지 않음 | Main unit not charging; cable issue; extreme temperature. | Verify the main DELTA Pro Ultra X unit is receiving power and charging. Check the connection cable for damage. Ensure the operating temperature is within the specified range. |
| 용량/실행 시간 감소 | Battery degradation over time; high power draw. | Battery capacity naturally decreases over many charge cycles. Ensure all connected devices are within the system's output limits. |
| 이상한 소음이나 냄새 | 내부 오류입니다. | Immediately power off the system and disconnect the extra battery. Contact EF ECOFLOW customer support. Do not attempt to repair. |
For further assistance, please refer to the EcoFlow app or contact customer support.
8. 사양
| 특징 | 세부 사항 |
|---|---|
| 상표 | EF 에코플로우 |
| 모델명 | DELTA Pro Ultra X Extra Battery with Connection Cable |
| 모델 번호 | EFYJ751-BP |
| 용량 | 6144Wh (Expandable up to 180kWh with multiple units) |
| 배터리 유형 | LiFePO4(인산철리튬) |
| 품목 무게 | 124 파운드 |
| 제품 크기(L x W x H) | 26인치 x 18인치 x 8인치 |
| 포함된 구성 요소 | EcoFlow Smart Extra Battery (DELTA Pro Ultra X) (x1), EcoFlow Battery Connection Cable (0.65ft) (x1) |
| 안전 기능 | EV-grade LFP cells, Dual BMS, 3-level safety architecture, Smart Extreme-Weather Protection |
9. 보증 및 지원
보증: This EF ECOFLOW DELTA Pro Ultra X Extra Battery is covered by a 2-year manufacturer's warranty from the date of purchase. Please retain your proof of purchase for warranty claims.
고객 지원: For technical assistance, warranty inquiries, or any other questions regarding your product, please contact EF ECOFLOW customer support through their official web사이트 또는 구매 문서에 제공된 연락처 정보를 참조하세요.