LiFePO₄ 51.2V 314Ah rechargeable battery pack

1. Product Overview

This product is a 16S-51.2V314Ah rechargeable lithium-ion battery pack, suitable for various energy storage application scenarios. The battery is equipped with a professional protection board and BMS (Battery Management System) inside, which can monitor the operating status in real time, provide multiple safety protections, and ensure the safety and service life of battery charging and discharging.

2. Core Dimensions & Appearance Parameters

1. Overall Dimensions: 900*420*250mm (L*W*H)

2. Shell Material: SPCC, default white color, color and LOGO can be customized according to customer requirements

3. Terminal: M8 energy storage terminal for positive and negative poles by default, customizable

4. Matching Cables: 1.0m power cable + 1.5m communication cable by default, no parallel cable, cables can be customized

5. Product Weight: Approx. 120kg (subject to actual weight)

6. Protection Grade: IP20

7. Shipment SOC: Approx. 40%

3. Panel Structure & Interface Definition

4. Core Battery Technical Specifications (@25℃)

5. Electrical Performance Indicators

Test Conditions: 25℃, Humidity 45%~75%

1. Nominal Capacity: ≥314Ah when discharged at 0.2C to cut-off voltage after standard charging

2. Initial Internal Resistance: ≤30mΩ when tested at 1kHz AC under 50% SOC condition

3. Short Circuit Protection: The battery automatically disconnects the load when positive and negative poles are short-circuited with 0.1Ω resistor

4. Discharge Temperature Characteristic: Discharge capacity retention rate ≥70% (-10℃), ≥85% (0℃), ≥100% (25℃), ≥95% (55℃) under different temperature and humidity conditions

5. Normal Temperature Discharge Performance: At 25℃, 0.2C discharge capacity ≥100% of nominal capacity, 1C discharge capacity ≥95% of nominal capacity

6. Capacity Retention Rate: Keep capacity >90% after open-circuit storage for 28 days, recover capacity >95% after standard charging

7. Cycle Life: ≥6000 cycles under DOD80% condition (cycle with 0.5C charge/discharge and 1h standing)

6. BMS Protection Circuit Core Parameters

(Factory Default Parameters, All Customizable)

6.1 Cell Overcharge/Overdischarge Protection

6.2 Total Overcharge/Overdischarge Protection

6.3 Overcurrent/Short Circuit Protection

7. Product Usage Specifications

1. Single battery can be used directly;

2. For parallel use, each battery must be fully charged according to the standard charging method before parallel connection;

3. The maximum number of parallel batteries shall not exceed 15;

4. Standard Charging Method: Charge in CC(0.2C)CV(58.4V) mode until the current drops to 0.02C, then stand for 1h;

5. Use matching or special charging equipment for lithium batteries for charging.

8. Transportation & Storage Requirements

8.1 Storage Requirements

1. Keep SOC at 30%~50% for long-term storage, high SOC storage will accelerate capacity attenuation;

2. Storage Environment Requirements:

   - ≤1 Month: -10~+60°C, 5~75%RH;

   - ≤6 Months: -5~+45°C, 5~75%RH;

   - Recommended Environment: 15~+35°C, 5~75%RH;

3. Idle batteries need to complete one charge-discharge cycle every 6 months.

8.2 Transportation Requirements

1. No falling or impact during loading and unloading;

2. No more than 5 layers of stacking, no overturning, keep the battery face up.

9. Safety Warnings & Precautions

9.1 Core Warnings

1. Keep the battery away from heat sources and high-voltage areas, avoid long-term exposure to sunlight;

2. Do not throw the battery into water or fire, and do not short-circuit the positive and negative poles with metal;

3. Do not reverse the positive and negative poles during wiring;

4. Avoid severe vibration and impact to the battery, do not hit, drop or step on the battery;

5. Do not disassemble or assemble the battery without manufacturer's permission and guidance;

6. Do not mix with batteries of other manufacturers, types and models.

9.2 Usage Precautions

1. Use or storage in high temperature environment will cause battery heating, fire or service life reduction;

2. Charge the battery in time (within 15 days) after discharging to the cut-off voltage;

3. Stop using immediately if the battery has abnormal conditions such as peculiar smell, discoloration, abnormal noise, leakage or severe deformation;

4. If electrolyte leaks and splashes into skin/eyes, rinse with clean water immediately and seek medical attention;

5. Keep the battery out of the reach of children and pets;

6. The manufacturer shall not be liable for any battery damage or accidents caused by non-compliance with this specification.