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Shenzhen Topband Battery Co., Ltd
A professional manufacturer of LiFePO4 battery / lithium iron phosphate, decicated to designing, researching, manufacturing, and exporting LiFePO4 batteries( cell & pack & energy storage system) to
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3.2V 27Ah Rechargeable Lifepo4 Battery / Lifepo4 Energy Storage System

Shenzhen Topband Battery Co., Ltd
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Shenzhen Topband Battery Co., Ltd
Country/Region: China
Contact Person:Mr Jerry Yang

3.2V 27Ah Rechargeable Lifepo4 Battery / Lifepo4 Energy Storage System

Brand Name : Topband
Model Number : TB-027070169D-Fe-27Ah
Certification : UL, MSDS
Place of Origin : China
MOQ : 1000pcs
Price : Negotiable
Payment Terms : L/C, T/T
Supply Ability : 450Mwh/year
Delivery Time : 2~4weeks for samples; 4~6weeks for mass production
Packaging Details : standard export carton
Chemistry : LiFePO4
Norminal voltage : 3.2V
Norminal capacity : 27Ah
Weight : 680g
Dimension : 70x27x169mm
Cycle life : ≥2000 (100% DOD)
Internal Impedance : less than 6.0mΩ
Warranty : 2 years
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3.2V 27Ah Rechargeable Lifepo4 Battery / Lifepo4 Energy Storage System

1. LiFePO4 Battery Cells 3.2V 27Ah Specification

ItemSpecificationRemark
5.0 Nominal Capacity27Ah0.5C discharge capacity
5.1 Typical Capacity27.5Ah
5.2 Internal Impedance≤8.0mΩBy AC 1KHz
5.3 Nominal Voltage3.20V
5.4 Cell Weight680±20gcontaining package
5.5 End-of-charge Voltage3.65VAt CC mode
5.6 End-of-charge Current0.05CAt CV mode
5.7 End-of-discharge Voltage2.00V
5.8 Charge Method0.5C CC/CV180 min
5.9 Quick Charge Method1C CC/CV90 min
5.10 Max Continuous Discharge current3CContinuous Discharge Time: 18 minutes
5.11 Max pulse Discharge Current5CContinuous Discharge Time: 10 seconds
5.12 Cycle Life≥2000cycles

0.5C Continual Discharge: ≥80%

(100% DOD)

5.13 Operating

Temperature Range

Charging Temperature0~45℃

Ambient temperature:25℃±5℃

Cell exterior temperature must be <65℃

Discharging Temperature

-20~55℃


Ambient temperature: 25℃±5℃

Cell exterior temperature not exceed 80℃

Storage Temperature-20~35℃Recommended temperature range for long term storage is –10~ +30°℃
5.14 Shelf Life2 year
5.15 AppearanceWithout break, scratch, distortion, contamination, leakage and so on

2. LiFePO4 Battery Cells 3.2V 27Ah Electrical Characteristics & Test Condition

@Ambient Temperature 25±5℃ & Humidity 45%~75%.


Test itemTest MethodCriteria

1. High

Temperature

Performance

A cell is charged in accordance with 6.2, and stored in an ambient temperature of 55℃±2℃ for 4 h,then discharged to cut-off voltage at a constant current of 0.5C. After that, fetch out the cell and place it in the ambient temperature of 23℃±2℃ for 4 h, then check its appearance.

1.Capacity retention:≥95%;

2. No distortion, no rupture.

2. Low

Temperature

Performance

A cell is charged in accordance with 6.2,and stored in an ambient temperature of -20℃±2℃ for 20hours,then discharged to cut-off voltage at a constant current of 0.5C. After that , fetch out the cell and place it in the ambient temperature of 23℃±2℃for 4hours, then check its appearance.

1.Capacity retention:≥60%;

2.Nodistortion,no rupture

3. 1C Normal Discharge PerformanceA cell is charged in accordance with 6.2, then discharged to cut-off voltage at a constant current of 1C in an ambient temperature of 23℃±2℃. After that,fetch out the cell and place it in the ambient temperature of 23℃±2℃for 4h, then check its appearanceCapacity retention:≥95%
4. 2C Normal Discharge PerformanceA cell is charged in accordance with 6.2, then discharged to cut-off voltage at a constant current of 2C in an ambient temperature of 23℃±2℃. After that,fetch out the cell and place it in the ambient temperature of 23℃±2℃for 4h, then check its appearanceCapacity retention:≥90%

5. Capacity

Retention

A cell is charged in accordance with 6.2, and stored in an ambient temperature of 23℃±2℃ for 28d, then discharged to cut-off voltage at a constant current of 0.5C.Capacity retention:≥80%

6. Cycle Life

(23℃±2℃)

A cell is charged to end-of-charge voltage at a current of 0.5C, and then charged at a constant voltage of 3.65V until the charge current is less than 0.05C, after that stored for 20min; Subsequently, the cell is discharged to cut-off voltage at a constant current of 0.5C, and stored 30min; prior to next charge-discharge cycle. The cell shall be continuously charged and discharged for 2000 times.capacity retention:≥80%

3. LiFePO4 Battery Cells 3.2V 27Ah Feature

  • Safe:Rigid aluminum alloy housing protection, BMS or PCB built inside to protect the battery over charge or discharge.
  • Environmental-friendly: Accredited with RoHS, without any hazardous and noxious substances.
  • Lighter and smaller: 1/3 weight of lead acid battery, 70% size/weight of Ni-MH/Ni-Cd battery.
  • Powerful: Able to discharge at -20 and 65°C max.
  • Long cycle life: Over 2000 cycles with capacity staying at minium 80%. Lead battery and other Li-ion batteries only have 300-500 cylces, such as Ni-Cd battery, Ni-MH battery.
  • Wide temperature range: Available for use when the temperature ranges from -20°C to 70°C.
  • Quality assurance: BV and SGS approved supplier, with TS16949 and ISO9001 quality management certificates and UL, CE, IEC62133, RoHS certificates.

4.LiFePO4 Battery Cells 3.2V 27Ah dimension


5. Storage & Transportation

  • Based on the character of cell, proper environment for transportation of LiFePO4 battery pack need to be created to protect the battery.
  • Battery should be stayed in the ware house -20℃~35℃ where it’s dry, clean, shade, and well-ventilated.
  • The battery should be stored in 50% SOC during transportation.
  • The battery need to be charged every 6 months if out of use.
  • Keep the battery against dropping, turning over and serious stacking during loading.

6. Warning & Tips

Please read and follow the specification and caution remarks on battery surface before use the battery. Improper use may cause heat, fire, rupture, damage or capacity deterioration of the battery. SHENZHEN TOPBAND NEW ENERGY CO.,LTD. Describes is not responsible for any accidents caused by the usage without following our specification.


7. Application



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3.2V 27Ah Rechargeable Lifepo4 Battery / Lifepo4 Energy Storage System Images

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