EPEVER LiFePO4 (LFP) Battery Product Manual
Model: LFP5.12KWH51.2V-P65H1EV50
1 Important Safety Instructions
ℹ️ Thank you for choosing EPEVER Lithium Iron Phosphate (LFP) battery. Please read this manual carefully before using this product.
ℹ️ It is strictly forbidden to install this product in harsh environments such as moisture, salt spray, corrosion, greasy, flammable and explosive, or a large amount of dust accumulation.
ℹ️ Please keep this product manual for future reference.
Precautions for work and storage
- a) Please keep the battery in a cool, dry place. The environment should be free of corrosive, explosive and insulation-damaging gases or conductive dust, and away from fire and heat sources and high pressure. It is forbidden to immerse the battery in water. Keep out of reach of children. Pay attention to anti-static electricity (static electricity may damage the battery protection circuit, causing battery damage).
- b) The battery should be safely fixed in a reasonable use environment. The connector must be reliably connected to avoid contact friction caused by arc and sparks.
- c) When handling the battery, please handle it gently to avoid mechanical vibration, collision, and pressure shock. Otherwise, it may cause internal short circuit of the battery, resulting in high temperature and fire.
- d) Do not short-circuit the positive and negative poles of the battery, and do not disassemble or assemble the battery to avoid danger.
- e) Please keep the battery in a semi-charged state (40%~80% SOC is appropriate). Please wrap the battery with non-conductive materials to avoid direct metal contact with the battery, which may cause battery damage.
- f) Please dispose of waste batteries safely and properly, and do not put them into fire or liquid.
- g) This battery cannot be used in series.
Danger warning
- a) It is strictly forbidden to crush, drop, collide, puncture, burn, and other destructive behaviors on the battery.
- b) It is forbidden to disassemble and assemble the battery. Improper disassembly and assembly may damage the protective function of the battery, resulting in deformation, heating, smoke, or combustion of the battery.
- c) It is forbidden to short circuit the battery. It is prohibited to connect the positive and negative electrodes of the battery with conductive materials. Do not store or transport the battery with the conductor to avoid battery damage due to short circuit.
d) It is forbidden to heat and incinerate batteries. It may melt battery components, lose safety features, or burn electrolyte. Overheating can deform, heat, smoke, or burn the battery.
Emergency treatment method
- a) When the electrolyte leaks, avoid skin and eye contact with the electrolyte. In case of contact, wash immediately with plenty of water and seek help from a doctor. It is forbidden for any person or animal to swallow any part of the battery or the substances contained in the battery.
- b) If the battery is seriously deformed or the electrolyte leaks due to collision and extrusion, the battery should be placed in the explosion-proof box or an open place, and the personnel should be evacuated quickly if conditions permit.
- c) If the battery catches fire during use or storage, use a high-pressure water cannon to extinguish the fire under the condition of ensuring personal safety.
- d) If the battery catches fire during charging, be sure to turn off the charger as soon as possible before executing the next fire extinguishing action.
2 General Information
2.1 Appearance
Description of Battery Components:
The battery unit features several components and indicators:
- A & B (Side Views): Indicate the side profiles of the battery unit.
- C (Weak-current switch): A switch for controlling weak current.
- D (Wall mounting bracket): A bracket designed for mounting the battery on a wall.
- E (Battery SOC indicator): An indicator for the State of Charge (SOC) of the battery.
- F (Malfunction indicator): An indicator for battery malfunctions.
- G (Running indicator): An indicator showing the operational status of the battery.
- H (Positive connector): Terminal for the positive electrical connection.
- I (Pressure reducing valve): A valve for pressure regulation.
- J (Negative connector): Terminal for the negative electrical connection.
- K (PC upper computer communication interface): Interface for connecting to a PC for monitoring or control.
- L (Inverter communication interface): Interface for communication with an inverter.
- M & N (Parallel communication interface): Interfaces for connecting multiple batteries in parallel.
- O (Grounding screw interface): Terminal for grounding the battery unit.
The front panel displays key information:
- Voltage: 51.2 V
- Capacity: 100 Ah
- Energy: 5120 Wh
Below these are LED indicators showing charge levels from 10% to 100%, along with ALM (Alarm) and RUN (Running) status lights.
2.2 Product Size
The physical dimensions of the battery unit are:
- Length: 510 ± 3 mm
- Width: 180 ± 2 mm
- Height: 560 ± 3 mm
The front panel also includes a series of LED indicators representing charge status (10% to 100%) and operational states (ALM, RUN).
3 Basic information
3.1 Interface definition
(1) RS232 Communication Interface (RJ11): Used to connect the lithium battery to a PC.
| RJ11 Pin | RJ11 Definition |
|---|---|
| 1, 2, 6 | NC |
| 3 | TX |
| 4 | RX |
| 5 | GND |
(RJ11 Connector Diagram)
(2) CAN/RS485 Communication Interface (RJ45): Used for communication between the lithium battery and the inverter host.
| Pin No | RJ45 Definition |
|---|---|
| 1 | RS485-B |
| 2 | RS485-A |
| 3 | GND |
| 4 | CAN-H |
| 5 | CAN-L |
| 6 | NC |
| 7 | RS485-A |
| 8 | RS485-B |
(RJ45 Connector Diagram)
(3) DIP Communication Interface (RJ45): Used for communication between lithium batteries in a parallel configuration.
| Pin No | RJ45 Definition |
|---|---|
| 1 | RS485-B |
| 2 | RS485-A |
| 3 | GND |
| 4 | GND |
| 5 | OP+ |
| 6 | NC |
| 7 | RS485-A |
| 8 | RS485-B |
(RJ45 Connector Diagram)
(4) BMS Communication Interface (RJ45): Used for communication between lithium batteries and the BMS.
| Pin No. | RJ45 Definition |
|---|---|
| 1 | RS485-B |
| 2 | RS485-A |
| 3 | GND |
| 4 | GND |
| 5 | UP-IN |
| 6 | NC |
| 7 | RS485-A |
| 8 | RS485-B |
(RJ45 Connector Diagram)
3.2 Product features
- Single voltage and overall voltage detection, with over-voltage and under-voltage alarm and protection.
- Charge and discharge current detection, alarm, and protection.
- Cell, environment, and PCB temperature detection, with alarms and protection for high and low temperatures during charging and discharging.
- Output short circuit detection and protection.
- Battery SOC calculation, charge, and discharge cycle calculation functions.
- Charge balancing function to reduce the charging current of high-voltage cells.
- LED indicator function for current battery SOC, fault status, and operating status.
- BMS manual and automatic sleep function.
- Charge current limiting function.
- History storage function (capacity not less than 500).
- RS485 communication function for real-time monitoring of BMS and battery status.
- Two-stage over-current protection for discharge with different response speeds for reliable battery protection.
3.3 LED Indicator
SOC Indicators (L1-L10): The L1 to L10 LEDs correspond to the battery's State of Charge (SOC) from 0% to 100%.
LED Light Board: Features 12 LED lights that can display red, yellow, blue, and green. These are categorized into three types:
| Light | State | Description |
|---|---|---|
| Run-led | Normal state | Green light: on solid |
| Charging state | Green light: flashing (1Hz) | |
| Discharge state | Green light: flashing (1Hz) | |
| Alarm-led | Normal state | No alarm or no protection status: off |
| Alarm state | Yellow light: flashing (Over-voltage and under-voltage do not make alarm indications, and do not flash yellow lights) | |
| Protection state | Red light: flashing | |
| Power indicator light | Invalid/failure state | Red light: on solid |
| Charging state | Blue light: indicates the power level | |
| Automatic power-on check | Discharge state | Green light: battery status (low battery) flashing. Flashing frequency: 2 times/second. |
| Normal state | The self-test status of LED (red, blue, green) is as follows: ◇ Red running light: The red display increases sequentially from Led-01. After fully on, it turns off and enters the next round. ◇ Blue running light: The blue display increases sequentially from Led-01. After fully on, it turns off and enters the next round. ◇ Green running light: The green display increases sequentially from Led-01. After fully on, it turns off and enters the next round. | |
| Dormancy | All LED lights: off |
4 Instructions
4.1 Packing list
Before unpacking, check the battery's exterior for packaging damage and verify the model. If any abnormality is found, do not open the package and contact the after-sales service center immediately. After unpacking, confirm product completeness against the packaging information. For any questions, contact the after-sales service center.
- Lithium battery (x1)
- Wall mounting bracket (x1)
- RS485 communication cable (x1)
- Positive output power cable (x1)
- Negative output power cable (x1)
- Battery pack parallel communication cable (x1)
- USB-A to RS232 communication cable (x1)
- M8×60 expansion bolt (x4)
- M8×12 bolt group (x2)
- RNB22-8 wiring terminal (x2)
4.2 Installation requirements
a. Space Installation distance
Ensure safety by mastering and checking the performance of all tools and devices before use.
Diagram Description: Illustrates required clearances. For a single battery, maintain at least 500mm on the sides and 300mm on the top and bottom. When installing multiple battery packs side-by-side, a distance of at least 500mm is recommended between units, with a minimum of 300mm clearance from the bottom and sides.
b. Wall Mounting Installation
Diagram Description: Details the 5-step wall mounting process:
- Position the mounting bracket against the wall, ensure it is level, mark screw holes, and remove the bracket.
- Use a hammer drill to create holes (10mm diameter, 65mm depth) in the wall. Insert M8 expansion screws and tighten them.
- Lift the lithium battery vertically and align it with the mounting bracket slots.
- Push the lithium battery horizontally into the slot of the wall mounting bracket.
- Slowly release your grip, allowing the lithium battery to snap securely into the wall mounting bracket.
c. Installation Environment
- The battery operates best at 20~40°C.
- Avoid installation in environments with direct high temperature and rain.
- Avoid installation close to high temperature heat sources or low temperature cold sources.
- Avoid installation in places where ambient temperature changes drastically.
- Avoid installation in environments with strong interference.
- Avoid installation in places accessible to children.
- Avoid installation in areas where water is likely to accumulate.
- It is forbidden to place flammable and explosive materials around the equipment.
d. Prepare tools
Diagram Description: Displays the necessary tools for installation:
- Hammer Drill
- Rubber Hammer
- Claw Safety Hammer
- Insulated Cross Screwdriver
- Insulated Slotted Screwdriver
- Spirit Level
- Tape Ruler
- Insulation Tape
- Dustproof Cover
- Protective Glasses
- Utility Knife
- Wire Stripper
- Diagonal Pliers
- MC4 Crimper
- Multimeter
- AC/DC Clamp-On Ammeter
- Marker Pen
- Electric Screwdriver
e. Wiring diagram
Diagram Description: Shows the wiring configuration for connecting batteries in parallel and to an inverter. The diagram illustrates the connections using color-coded cables:
- Positive output power cable (1500mm)
- Negative output power cable (1500mm)
- RS485 communication cable (1500mm)
- Lithium battery positive parallel power cable
- Lithium battery negative parallel power cable
- Lithium battery parallel communication cable (DIP~BMS) (1200mm)
Precautions for inverter connection and parallel connection:
Select the correct wiring harness based on the parallel schematic diagram and product appearance.
- Output power cable (black and red cables): The positive connector of the host connects to the positive terminal of the inverter (red cable). The negative connector of the host connects to the negative terminal of the inverter (black cable).
- RS485 communication cable (blue cable): Facilitates communication between the host and the inverter. The host uses the RS485 port, and the inverter uses the BMS port.
- Lithium battery parallel power cable: The positive connector of the host connects to the positive connector of the slave (orange cable). The negative connector of the host connects to the negative connector of the slave (black cable).
- Lithium battery parallel communication cable (green cable): Enables communication between the host and the slave. The host uses the DIP port, and the slave uses the BMS port.
⚠️ Warning:
- For operational safety and compliance, disconnect the communication and cable link with the inverter when storing the battery.
- During handling and installation, wear safety helmets, goggles, protective shoes, and other suitable safety equipment to prevent accidental injury.
- All wiring must be carried out by professionals. Using the correct cables is essential for safe and efficient system operation. To reduce risk, use cables provided by EPEVER or cables meeting their recommended specifications.
4.3 Charging operation
- Check before charging:
- Inspect the appearance of the battery, inverter, or other connected equipment to ensure power cords and wiring harnesses are properly connected.
- Verify that the power supply meets the battery's specification requirements.
- Turn off the inverter or other equipment. Connect the positive and negative terminals of the battery, and connect the communication cable normally.
⚠️ Warning: Before connecting the battery, ensure that the positive and negative terminals are correctly connected. Do not reverse connect.
- Connect the charger to the power supply and turn it on.
- Start the battery. The POWER indicator should be on, and the SOC indicator should flash, indicating normal charging.
Standard Charging:
First, charge the battery to 57.6V with a constant current of 20A (0.2C), then charge to 5A (0.05C) with a constant voltage of 57.6V.
Note: All tests stated in this document shall be performed at 25±2℃.
4.4 Discharge operation
- Before discharging, check that the load and equipment are turned off.
- Properly connect the positive and negative terminals of the battery to the load/inverter or other equipment.
⚠️ Warning: Before connecting the load and equipment, please confirm the positive and negative wiring of the battery, and prohibit reverse connection.
- Turn on the load/inverter or other device.
- Start the battery. The POWER indicator should be steady on, the RUN indicator should be on for 0.5 seconds, and discharge starts for 1.5 seconds.
Standard discharge:
After standard charging, discharge the battery with a constant current of 20A (0.2C) until the battery voltage drops to 41.6V.
Note: All tests stated in this document shall be performed at 25±2℃.
Precautions for charging and discharging operation:
- a) In summer, when the temperature is high (≥35°C), the battery should not be charged more than 0.5C during the day. It is recommended to stand for more than 30 minutes during charge-discharge conversion to avoid frequent use in high-temperature environments, which can affect battery life.
- b) In winter, when the temperature is low (<0°C), the depth of battery discharge should be kept below 70% to avoid over-discharge caused by low temperatures, which can affect battery life.
⚠️ Warning: This lithium battery should only be used with a manufacturer or manufacturer-matched compatible inverter or other equipment. If the lithium battery does not communicate with the inverter or other equipment, it is forbidden to use the lithium battery.
4.5 Description of battery parallel capacity and voltage
| Capacity | Number of battery parallel groups | Maximum charging voltage | Discharge cut-off voltage |
|---|---|---|---|
| 200Ah | 2 groups | 57.6V | 41.6V |
| 300Ah | 3 groups | 57.6V | 41.6V |
| 400Ah | 4 groups | 57.6V | 41.6V |
| 500AH | 5 groups | 57.6V | 41.6V |
| 600Ah | 6 groups | 57.6V | 41.6V |
| 700Ah | 7 groups | 57.6V | 41.6V |
| 800Ah | 8 groups | 57.6V | 41.6V |
5 Protection Features
| No | Item | Factory default parameter | Set state | Postscript | |
|---|---|---|---|---|---|
| 1 | Cell overcharge protection | Cell overcharge alarm voltage | 3600mV | settable | |
| Cell overcharge protection voltage | 3650mV | settable | |||
| Cell overcharge protection delay | 1.0S | settable | |||
| 1 | Cell over-voltage protection | Cell overcharge protection voltage | 3380mV | settable | |
| SOC release | SOC<96% | settable | |||
| Discharge release | Discharge current>2A | ||||
| 2 | Cell over-discharge protection | Cell over-discharge alarm voltage | 3380mV | settable | |
| Cell over-discharge protection voltage | 3380mV | settable | |||
| Cell over-discharge protection delay | 1.0S | settable | |||
| Cell over-discharge protection release voltage | 2950mV | settable | |||
| 2 | Cell over-discharge release | Release on charge | Plug in the charger to activate | ||
| 3 | Battery overcharge protection | Battery overcharge alarm voltage | 57.6V | settable | |
| Battery overcharge protection voltage | 58.4V | settable | |||
| Battery overcharge protection delay | 1.0S | settable | |||
| 3 | Battery overcharge protection release | Battery overcharge protection release voltage | 54V | settable | |
| SOC release | SOC<96% | settable | |||
| Discharge release | Discharge current>2A | ||||
| 4 | Overall over-discharge protection | Battery over-discharge alarm voltage | 44.8V | settable | |
| Battery over-discharge protection voltage | 43.2V | settable | |||
| Battery over-discharge protection voltage delay | 1.0S | settable | |||
| 4 | Battery over-discharge protection release | Battery over-discharge protection release voltage | 47.2V | settable | |
| Release on charge | Plug in the charger to activate | ||||
| 5 | Charge over-current protection | Charging over-current alarm current | 105A | settable | |
| Charging over-current protects the current | 110A | settable | |||
| Charging over-current protection delay | 1.0S | settable | |||
| 5 | Charge over-current protection release | Automatic release | Automatically disconnects after 1mins | If the status is locked for 10 consecutive times, it cannot be automatically unlocked | |
| Discharge release | Discharge current > 1A | ||||
| 6 | Discharge over-current 1 protection | Discharge over-current 1 alarm current | 105A | settable | |
| Discharge over-current 1 Protects current | 110A | settable | |||
| Discharge over-current 1 Protection delay | 1.0S | settable | |||
| 6 | Discharge over-current 1 protection release | Automatic disconnect | Automatically disconnects after 1 minute | Appearing 10 times in a row will lock the state and will no longer be automatically disconnect | |
| 7 | Discharge over-current 2 protection | Protection current | >150A | settable | It can be set 10 consecutive occurrences to lock the state without automatically disconnecting |
| 7 | Discharge over-current 2 protection release | Automatic disconnect | Automatically disconnects after 1 minute | ||
| 7 | Discharge over-current 2 protection release | Charge disconnect | Discharge current > 1A | ||
| 8 | Short circuit protection | Short-circuit protection function | Available | When there is charging, the short circuit protection is removed | |
| Short-circuit release | After the load is removed, it is automatically removed | ||||
| 9 | MOS high temperature protection | Alarm temperature | 90° C | settable | |
| Protective temperature | 115° C | settable | |||
| Release temperature | 85° C | settable | |||
| 10 | Cell temperature protection | Charge low temperature alarm | 5°C | settable | |
| Charge low temperature protection | 0°C | settable | |||
| Charge low temperature protection release | 5°C | settable | |||
| Charging high temperature alarm | 60°C | settable | |||
| 10 | Cell temperature protection | Charging high temperature protection | 65°C | settable | |
| Charge high temperature protection release | 55°C | settable | |||
| Discharge low temperature alarm | -15°C | settable | |||
| Low temperature discharge protection | -20°C | settable | |||
| 10 | Cell temperature protection | Discharge low temperature protection release | -15°C | settable | |
| High discharge temperature alarm | 65°C | settable | |||
| Discharge high temperature protection | 70°C | settable | |||
| 10 | Cell temperature protection | Discharge high temperature protection release | 60°C | settable | |
| 11 | Ambient temperature alarm | Ambient low temperature alarm | -15°C | settable | |
| Ambient low temperature protection | -20°C | settable | |||
| Environmental low temperature protection release | -15°C | settable | |||
| Ambient high temperature alarm | 65°C | settable | |||
| 11 | Ambient temperature alarm | Ambient high temperature protection | 75°C | settable | |
| 11 | Ambient temperature alarm | Ambient high temperature protection release | 65°C | settable | |
| 12 | Low battery alarm | Low battery alarm condition | SOC<5% | settable | No alarm when charging |
| 13 | Sleep function | Sleep voltage | 3150mV | settable | |
| Delay time | 5min | settable | |||
| 13 | Sleep function | Cell voltage difference | voltage difference>1V | settable | Charging and discharging are not allowed |
| 14 | Full charge | Full charge voltage | >56V | settable | When both conditions are met, stop charging and update the SOC to 100% |
| Cut-off current | <2A | settable |
(Note: Unless otherwise specified, the above parameters are tested at 25°C ambient temperature.)
6 Specifications
| Parameter | LFP5.12KWH51.2V-P65H1EV50 |
|---|---|
| Battery Type | LiFePO4 |
| Nominal Voltage | 51.2V |
| Nominal Capacity | 100Ah |
| Energy | 5120Wh |
| Continuous Discharge Current | 50A |
| Charge Cut-off Voltage | 57.6V |
| Discharge Cut-off Voltage | 41.6V |
| Maximum Charge Current | 50A |
| Maximum Discharge Current | 100A@30min |
| Peak Discharge Current | 120A@10S |
| Recommend Discharge Current | 50A |
| Open-circuit Voltage | 50.88~53.6V |
| Communication | RS485 CAN RS232 |
| Display | LED |
| Cycle Life | >5000 times (0.5C charge&discharge 80%DOD @25℃) |
| Number of series/parallel | Max 8 battery packs in parallel |
| Certification | UN38.3 MSDS IEC62619 ROHS |
| Charge&Discharge Temperature | Charge: 0°C~+55℃; Discharge: -20℃~+60℃ |
| Storage Temperature Range | -5°C~+0°C/+35℃~+45℃ (≤2month); 5℃~+35℃ (≤3 months, Optimum storage temperature); 15℃~+35℃ (≤6 months) |
| Relative Humidity | 60%±20% RH |
| Connect Terminal | Quick-plug |
| Dimension (L x W x H) | 510mm*180mm*560mm |
| Net Weight | 49.8±0.5kg |
| IP Class | IP65 |
| Warranty | 3 years (See warranty agreement for details) |
① Repeat the operation method of standard charging and standard discharge 3 times, and take the third result as the initial capacity of the battery.
② When the battery is stored for more than 3 months, the storage voltage should be maintained at 52~53.6V.
③ For long-term storage, charge at least once every 3 months (no less than 30 minutes@0.2C).
7 Precautions
7.1 Maintenance precautions
| Item | Cycle |
|---|---|
| If the battery is not in use, it needs to be fully charged and discharged to 50%. | 3 months |
| Check whether the wall bracket installation is loose. Please tighten the appropriate position if available. | 6 months |
| Check the casing for damage. If damaged, please repaint or contact after-sales service center. | 6 months |
| Check exposed wires for wear and tear. If the cable is worn, replace the appropriate cable or contact the service center. | 6 months |
| Check for debris buildup around the battery. Clean it to prevent heat dissipation of the battery. | 6 months |
| Check water or pests to avoid long-term intrusion and damage to the battery. | 6 months |
⚠️ Warning:
- 1. If you find any problems that may affect the battery or the battery and energy storage system, please contact the after-sales service department; disassembly is strictly prohibited.
- 2. If you find that the copper wire inside the conductive wire is exposed, please strictly prohibit touching it due to the danger of high voltage. Please contact the after-sales personnel; disassembly is strictly prohibited.
- 3. If there are other emergencies, please contact the after-sales personnel first, operate under the guidance of the after-sales personnel, or wait for the after-sales personnel to operate on site.
8. Disclaimers
The warranty does not apply to the following conditions:
- Damage caused by improper use or inappropriate environments (It is strictly forbidden to install the Energy Storage System in humid, salt spray, corrosive, greasy, flammable, explosive, dust accumulative, or other harsh environments).
- The actual current/voltage/power exceeds the limit value of the Energy Storage System.
- Damage caused by working temperature exceeding the rated temperature range.
- Electric arc, fire, explosion, and other accidents caused by failure to follow the Energy Storage System labels or manual instructions.
- Unauthorized disassembly and maintenance of the Energy Storage System.
- Damage caused by force majeure such as lightning strikes, rainstorms, mountain torrents, and Utility failures.
- Damage occurred during transportation or loading/unloading of the Energy Storage System.
Any changes without prior notice! Version number: V1.2
Contact Information
HUIZHOU EPEVER TECHNOLOGY CO., LTD
- Beijing Service Hotline: 010-82894896/82894112
- Huizhou Service Hotline: 0752-3889706
- Shenzhen Service Hotline: 0755-89236770
- E-mail: sales@epever.com
- Website: www.epever.com.cn
