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Shenzhen Seplos Technology Co.,Ltd

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High Performance Lithium Ion Battery Cells Safety Lithium Ion Rechargeable Cell

High Performance Lithium Ion Battery Cells Safety Lithium Ion Rechargeable Cell

    • High Performance Lithium Ion Battery Cells Safety Lithium Ion Rechargeable Cell
    • High Performance Lithium Ion Battery Cells Safety Lithium Ion Rechargeable Cell
    • High Performance Lithium Ion Battery Cells Safety Lithium Ion Rechargeable Cell
    • High Performance Lithium Ion Battery Cells Safety Lithium Ion Rechargeable Cell
    • High Performance Lithium Ion Battery Cells Safety Lithium Ion Rechargeable Cell
  • High Performance Lithium Ion Battery Cells Safety Lithium Ion Rechargeable Cell

    Product Details:

    Place of Origin: China(Mainland)
    Brand Name: Seplos
    Certification: CE
    Model Number: Seplos P50

    Payment & Shipping Terms:

    Minimum Order Quantity: 50
    Price: $87.00 / Piece
    Packaging Details: One gift box, one battery; One carton box, six gift boxes.
    Delivery Time: 5-8 work days
    Payment Terms: T/T ,Western Union,MoneyGram
    Supply Ability: 10000 Piece/Pieces per Month
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    Detailed Product Description
    Quality Guarantee: Three Months For Free Replacement(shipping Free Warranty: 12 Months
    Battery Type: LiFePO4 Rechargeable Li-ion Application: Car, Boat, Motorcycle, Digital Device,Energy Storage
    Weight: ≤1.2Kg Voltage: 3.2V
    Capacity: 50AH Single Package Size : 13X3.6X15 Cm

    China supplier long cycle life Seplos P50 3.2V 50ah lithium ion Rechargeable LiFePO4 battery cell for solar storage
     
    Product Description
     

    1 Scope

    3.2V 50Ah(:Seplos P50).

    This product specification delivers the performance specifications, working conditions and safety risks of 3.2V-50Ah-LFP secondary battery (PN: Seplos P50) manufactured by Seplos.

     

     

    2 Performance Specifications

    2.1 Overview

    No. Description/ Item Specifications Remarks
    2.1.1

     

    Nominal Capacity

    50 Ah

     

    2.5~3.65V, 25A Discharge Current, Initial Status
    2.1.2

     

    Minimum Capacity

     

    50 Ah 2.5~3.65V, 25A Discharge Current, Initial Status
    2.1.3

     

    Operating Voltage Range

    2.50-3.65V

    N.A.

     

    2.1.4

     

    Initial Inner Resistance(1KHz)

    ≤0.50mΩ

     

    50%SOC, Initial Status
    2.1.5 Initial SOC

    ≈40%SOC (40 Ah)

     

    N.A.
    2.1.6 Charge Temperature Range

    0 - 55℃

     

    Refer to 2.2
    2.1.7 Discharge Temperature Range -20 - 55℃ Refer to 2.3
    2.1.8

     

    Weight

    ≤1.2Kg

     

    N.A.

     

    2.1.9

     

    Self-discharge

    ≤3.5%/

    ≤3.5% per month

     

     

    25℃ / 50% SOC / Within 3 months since Date of Manufacture

     

     

    2.2 / Charge Mode & Specifications

    No.      

    2.2.1

     

     

    Standard Charge Current

    0.5C

     

    25℃

     

    2.2.2

     

     

    Standard Charge Voltage

    3.65

    ≤3.65V

     

     

    2.2.3

     

    Standard Charge Mode

    0.5C 3.65 ,3.65≤2.5±0.5A

    Using 0.5C Constant Current (CC) to charge to 3.65V, then Constant Voltage (CV) at

    3.65V to charge until charge current reaches the lower limit of 2.5±0.5A.

    2.2.4

     

    Standard Charge Temperature

    25℃

     

     

    Cell Temperature

     

    2.2.5

     

    Absolute Charge Temperature

    0~55℃

    Ԩ

     

    ,

    Terminating charge process, once the cell temperature is beyond

    Absolute Charge Temperature.

    2.2.6

     

    Absolute Charge Voltage

    3.8

    ≤3.8V

     

     

    ,

    Terminating charge process, once the cell OCV is beyond Absolute Charge Voltage.

     

     

    2.2.7 Other Charge Mode

           

    <0℃Ԩ

     

     

    Prohibited to charge

     

    Prohibited to charge

     

    Prohibited to charge

    0~10℃

     

    0.1C

    Charge Current 0.1C

     

    Prohibited to charge

     

    Prohibited to charge

    10~15℃

     

    0.2C

    Charge Current 0.2C

    0.3C

    Charge Current 0.3C

     

    Prohibited to charge

    15~25℃

     

    0.3C

    Charge Current 0.3C

    0.5C

    Charge Current 0.5C

     

    Prohibited to charge

    25~45℃

     

    0.5C

    Charge Current 0.5C

    1.0C

    Charge Current 1C

     

    Prohibited to charge

    45~55℃

     

    0.3C

    Charge Current 0.3C

    >55℃

     

     

    Prohibited to charge

     

    2.3 Discharge Mode

    No.      
    2.3.1

     

    Standard Discharge Current

    25A 25℃
    2.3.2

     

    Maximum Continuous Discharge Current

    50A N.A.
    2.3.3

     

    Maximum Discharge Long-Pulse Current

    100A

     

    3

    3minutes maximum

    2.3.4

     

    Maximum Discharge Short-Pulse Current

     

     

    150A

     

    Cell temperature lower than 50℃Ԩ

    When SOC>40%, 60s maximum,

    When SOC<40%, 10s maximum

    2.3.5

     

    Discharge cut-off Voltage

    2.5

    ≥2.5V

    N.A.
    2.3.6

     

    Standard Discharge Temperature

    25℃Ԩ

     

     

    Cell Temperature

    2.3.7

     

    Absolute Discharge Temperature

    -20~55℃Ԩ

     

    Regardless of the discharge mode, the

    discharge process should be terminated, once

    the cell temperature is beyond Absolute

    Discharge Temperature.

     

    2.4 Regenerate Pulse Charge Mode

    Regenerate Pulse Charge must be carried out under the circumstances stated below. Pulse current and duration need to be strictly controlled according to cell temperature and SOC. Any violation may cause permanent damage to batteries for which Seplos will be relieved from its liability.

     

    2.4.1 3.65V. The maximum regenerate pulse charge voltage 3.65V.

     

    2.4.2 Regenerate pulse charge current and duration.

    SOC Cell Temperature
    ≤0℃ 0℃~10℃ 10℃~20℃ 20℃~55℃ ≥55℃
    >95% Prohibited Prohibited Prohibited Prohibited Prohibited
    80%~95% Prohibited Prohibited ≤1C,≤5s ≤1C,≤10s Prohibited
    50%~80% Prohibited ≤1C,≤5s ≤1.0C,≤10s ≤1.5C,≤10s Prohibited
    <50% Prohibited ≤1.0C,≤10s ≤1.5C,≤10s

    ≤2C,≤10s

     

    Prohibited

     

    Rest intervals between pulses ought to be no shorter than the pulse duration. Any charge current is prohibited during rest intervals, whereas discharge current or no current is allowed.

     

    2.5 Capacity at Low Temperature (Initial Status)

    No.

     

    Description

    Specifications

     

    Remarks

    2.5.1

    25℃

    Capacity at 25℃

    ≥50.0 Ah

     

    Charge/Discharge at 25±2℃Ԩ
    2.5.2

    0℃

    Capacity at 0℃

    ≥42.5 Ah

     

     

    Charge at 25±2℃/Discharge at 0℃ with 1.0C (2.0~3.65V)

    2.5.3

    -10℃

    Capacity at -10℃

    ≥37.5 Ah

     

     

    Charge at 25±2℃/Discharge at -10℃ with 1.0C (2.0~3.65V)

    2.5.4

    -20℃

    Capacity at -20℃

    ≥35 Ah

     

    Charge at 25±2℃/Discharge at -20℃ with 1.0C (2.0~3.65V)

     

    2.6 Safety & Reliability

    This product complies with the requirements of State-set mandatory standard of quality (GB/T 31485-2015) and of transportation (UN38.3).

     

    3. Temperature Rise

    During the measurement of temperature rise, battery cells should be set upright (according to 9. Cell Design Drawing) and placed in a large room with a stable temperature and enough convection. Temperature sensors should record both cell temperature and time. Temperature rise equals to cell temperature after discharge minus that before discharge.

    No.

     

     

    Description/ Item

     

    Specifications

     

    Remarks

    3.1

     

    Continuous Discharge Temperature Rise

     

    ≤10℃

     

    Discharge Current of 50A Discharge of 2hours
    3.2

     

    Pulse Discharge Temperature Rise

    ≤5℃

     

    Discharge Current of 300A Discharge of 10s at any SOC

     

    4. Storage Specifications

    No.

     

    Description/ Item

     

    Specifications

     

    Remarks

    4.1

     

    Capacity Recovery

    (Short-term)

    ≥48.5Ah

     

    At initial status with 50% SOC, stored in a room with ambient temperature of 25℃for 60 days.
    4.2

     

    Capacity Recovery

    (Long-term)

    ≥47.5Ah

     

    At initial status with 50% SOC, stored in a room with ambient temperature of 25℃for 183 days.
    4.3

     

    Absolute Storage

    Temperature

    -20~55℃  
    4.4

     

    Capacity Retention

    ≥40 Ah(3000 Cycles) After storage, using standard charge/discharge mode.

     

    5. Termination of Battery Life

    A customer should monitor and record the inner resistance of each battery cell. Both parties should agree on the method to measure inner resistance. When the inner resistance of a cell reaches 250% of that of its initial status, it should be terminated immediately. Any violation may cause safety hazards for which Seplos will be relieved from its liability.

     

    6. Working Conditions

     

    6.1 A BMS should be integrated in battery packs to ensure monitoring, management and protection of each battery cell.

    6.2 A customer should provide BMS requirements, such as system specifications, framework, data and format, so

    Seplos would deliver BMS design and establish battery management profile accordingly.

    6.3 Without the consent of Seplos, no changes may be made to BMS design or framework.

    6.4 Operation data of battery should be recorded for responsibility determination of product quality. Incomplete operation

    data will relieve Seplos from its liability for battery quality.

    6.5 A BMS should have the following primary functions.

     

    No.

     

    Description

    Specifications

     

    Protections

    6.5.1

     

    Charge cut-off Voltage

    3.65V

     

    Terminating charge process when cell OCV reaches 3.65V

    6.5.2

     

     

    First Over-charge

    Protection

    ≥3.8V

     

    Limiting charge current to 0 when cell OCV reaches 3.8V.
    6.5.3

     

    Second Over-charge

    Protection

    ≥4.0V

     

     

    Limiting charge current to 0 when cell OCV reaches 4.0V. Locking BMS before the problem is identified and resolved.

    6.5.4

     

    Discharge cut-off

    Voltage

    2.5V

     

    Terminating discharge process when cell OCV reaches 2.5V.
    6.5.5

     

    First Over-discharge

    Protection

    2.0V

     

     

    Limiting discharge current to 0 when cell OCV reaches

    2.0V

    6.5.6

     

    Second Over-discharge

    Protection

     

    1.8V

     

    Limiting discharge current to 0 when cell OCV reaches 1.8V. Locking BMS before the problem is identified and resolved.
    6.5.7

     

    Short Circuit Protection

     

    Prohibit Short

    Circuit

    Cutting off overcurrent devices (fuses, circuit breakers).
    6.5.8

     

    Overcurrent Protection

     

    Referring to 2.3

     

    Limiting current within specified range according to 2.3.

    6.5.9

     

    Overheating Protection

    Referring to 2.2

    & 2.3

     

    Terminating charge/discharge process when cell temperature

    is beyond the limits specified in 2.3 & 2.3.

    6.5.10

     

    Charging Time Protection

    ≤8h

     

    Terminating charge process when charging time exceeds 8 hours.

     

    Note 6.5.2, 6.5.3, 6.5.5, and 6.5.6 are warnings. Batteries are out of working condition in these cases and should be segregated and protected by the BMS or the customer. Seplos will be relieved from liability for quality issues and subsequent damage (to the customer or to a third party) caused by the abuse of batteries stated in 6.5.2, 6.5.3, 6.5.5, and 6.5.6.

     

    6.6 Cell OCV below 1.5V may cause permanent damage to the battery for which Seplos will be relieved from liability. According to 2.3.5, when discharge cut-off voltage is lower than 2.5V, the rest interval should be prolonged before the next charge.

    6.7 If batteries are to be stored beyond 30 days, they should be charged to at least 50% SOC.

    6.8 According to 2.2, charging at low temperature is prohibited regardless of the charge mode. Any violation may considerably lower the battery capacity, for which Seplos will be relieved from liability. The BMS should monitor and manage the ambient temperature according to the temperature range of standard charge and regenerate charge.

    6.9 Batteries should be placed in a container with enough convection or other effective cooling system. Otherwise, Seplos will be relieved from liability for quality issues and subsequent damage (to the customer or to a third party) caused by overheating of batteries.

    6.10 Batteries should be placed in a container which complies with the requirements of State-set standard of waterproof and dustproof. Otherwise, Seplos will be relieved from liability for quality issues and subsequent damage (to the customer or to a third party) caused by corrosion of batteries.

     

    7. Safety Precautions

    7.1 Prevent batteries from being immersed in water.

    7.2 Prevent batteries from fire or overexposure to any high temperature environment specified in 2.1.7 & 2.1.8. Cell temperature should never exceed 55 or the BMS should shut down the battery system.

    7.3 Prevent direct connection between the positive and negative terminal of a cell. The resulting short circuit could damage the product and generate heat that can cause burns. Special caution is required to prevent short circuiting any battery since the consequences can be very dangerous. Care must be taken during the installation of the battery pack to ensure batteries cannot be inserted in reverse. Also, caution must be given to prevent accidental short-circuiting of the battery.

    7.4 Never reverse charge for it causes rapid gas generation and increased gas pressure, thus causing batteries to swell or rupture.

    7.5 Prevent batteries from overcharge. A BMS should provide overcharge protection specified in 6.5.3 and 7.11.

    7.6 Never leave the battery in the charger once it is fully charged. A timer is required to cut off the battery from the charger

    should charging time exceed 8 hours (6.5.10& 7.11) or batteries may overheat and cause fire.

    7.7 Avoid flame or sparks that could ignite the hydrogen gas produced by the battery and cause an explosion. Connection

    and disconnection of cables to battery terminals is one of the most common causes of sparks.

    7.8 Avoid using airtight battery compartments. In some cases, gases (oxygen, hydrogen) may be given off, and there is a danger of the batteries bursting or rupturing in the presence of a source of ignition (sparks generated by a motor switch, etc.).

    7.9 Wear eye protection when working around batteries and prevent eyes and skin from contacting electrolyte. Batteries contain corrosive acid and produce explosive gas a byproduct of their operation. Acid on the skin should be neutralized with a solution of baking soda and water made into a paste. In case acid contacts eyes, flush with clear water and seek medical attention immediately.

    7.10 Prevent batteries from vibration, collision and crush to preempt short circuit caused by distortion.

    7.11Prevent batteries from improper termination of charge, including overtime termination (6.5.10), overvoltage termination (6.5.2 & 6.5.3) and overcurrent termination (6.5.8). Improper termination of charge may occur when the battery system malfunctions. Any charging process regardless of the charge mode should be terminated before the problem is identified and resolved. The BMS should limit charge current to 0 or lock down the battery system to preempt further

    charging process, while also delivering warning messages to operators.

    7.12 The test described in 2.6, if incorrectly performed, may cause fire or explosion, and thus requires professionals with proper equipment and laboratory.

     

    8. Warnings & Hazards

     

    8.1 Warning Notice

     

    Warning

    Due to various hazards, precautions must be taken when operating and maintaining

    the battery system.

    The test described in 2.6, if incorrectly performed, may cause fire or explosion.

    Proper protective equipment is needed to operate the battery system.

    Battery system maintenance requires professionals with effective safety training.

     

     

    8.2 Types of hazard

    The customer should acknowledge the following types of hazards in battery operation.

    8.2.1 Shock hazards occur when electric current passes through a person. Shocks range in severity from painful, but otherwise harmless, to heart-stopping lethality.

    8.2.2 Chemical hazard caused by exposure to electrolyte.

    8.2.3 Thermal hazards occur when electric power causes undesired heating effects whenever electric energy is converted to thermal energy at a rate faster than it can be safely dissipated.

     

    Application

     

    High Performance Lithium Ion Battery Cells Safety Lithium Ion Rechargeable Cell
     
    FAQ

    Q1. What is your terms of packing?
    A: Generally, we pack our goods in neutral white boxes and brown cartons. If you have legally registered patent,
    we can pack the goods in your branded boxes after getting your authorization letters.

    Q2. What is your terms of payment?
    A: T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages
    before you pay the balance.

    Q3. What is your terms of delivery?
    A: EXW, FOB, CFR, CIF, DDU.

    Q4. How about your delivery time?
    A: Generally, it will take 30 to 60 days after receiving your advance payment. The specific delivery time depends
    on the items and the quantity of your order.

    Q5. Can you produce according to the samples?
    A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.

    Q6. What is your sample policy?
    A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and
    the courier cost.

    Q7. Do you test all your goods before delivery?
    A: Yes, we have 100% test before delivery

    Q8: How do you make our business long-term and good relationship?
    A:1. We keep good quality and competitive price to ensure our customers benefit ;
    2. We respect every customer as our friend and we sincerely do business and make friends with them,
    no matter where they come from.

    Contact Details
    Shenzhen Seplos Technology Co.,Ltd

    Contact Person: Zhang

    Tel: 13286686628

    Send your inquiry directly to us (0 / 3000)

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    Tel:86-132-86686628
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