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Prismatic Lifepo4 Battery Cells Low Self - Discharge 3.2V 12Ah 20Ah 25Ah 50Ah

Good quality Deep Cycle Lithium Battery for sales
Good quality Deep Cycle Lithium Battery for sales
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Prismatic Lifepo4 Battery Cells Low Self - Discharge 3.2V 12Ah 20Ah 25Ah 50Ah

China Prismatic Lifepo4 Battery Cells Low Self - Discharge 3.2V 12Ah 20Ah  25Ah  50Ah supplier

Large Image :  Prismatic Lifepo4 Battery Cells Low Self - Discharge 3.2V 12Ah 20Ah 25Ah 50Ah

Product Details:

Place of Origin: China
Brand Name: Topband
Certification: UL1642, UN38.3, IEC62619, MSDS
Model Number: TB-027070180D-Fe-25Ah

Payment & Shipping Terms:

Minimum Order Quantity: 1000pcs
Price: Negotiable
Packaging Details: standard export carton
Delivery Time: stock for samples; 4~6weeks for mass production
Payment Terms: L/C, T/T
Supply Ability: 450Mwh/year
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Detailed Product Description
Type: LiFePO4( Lithium Iron Phosphate) Max Charge: 1C
Max Discharge: 3C Max Pulse Discharge Current: 5C
Internal Impedance: ≤4mΩ Capacity: 10AH / 12AH / 20AH / 25AH / 27AH / 50AH
Cycle Life: ≥2000cycles @ 100% DOD Calendar Life: 8 Years
Pole Torsion: ≤5.5N•m Warranty: 2 Years

Prismatic Lifepo4 Battery Cells Low Self - Discharge 3.2V 12Ah 20Ah 25Ah 50Ah

 

· long life & deep cycle( over 2000cycles @ 100%DOD)

· with built-in PCM/BMS protection

· super quick charge/discharge performance

· safe pressure valve design ( no explosion, no fire)

· high energy density

· low self-discharge( <3% per month,<15% per year)

· 1/3 weight & 1/2 volume of lead acid battery

· eco-friendly

· high consistency

· no memory effect

· easily replace lead acid battery

 

Prismatic Lifepo4 Battery Cells Low Self - Discharge 3.2V 12Ah 20Ah  25Ah  50Ah

 

1.  General

This Product Specification describes the technique requirements, test procedures and precaution notes of prismatic type Lithium iron phosphate rechargeable cell, manufactured by SHEN ZHEN TOPBAND New Energy Technology CO.,LTD.

2.  Main product specification

No. item standard remark
2.1 Nominal Capacity 25Ah 25±5℃,1C discharge
2.2 Internal Impedance ≤4mΩ  
2.3 Nominal Voltage 3.2V  
2.4 Cell Weight 650±20g  
2.5 End-of-charge Voltage 3.65V At CC mode
2.6 End-of-charge Current 0.05C At CV mode
2.7 End-of-discharge Voltage 2.00V  
2.8 Standard Charge Method 1C CC/CV 25±5℃
2.9 Max pulse Discharge Current 5C Continuous Discharge Time: 10 seconds
2.10 Cycle Life ≥2000cycles

1C Continual Discharge: ≥80%

(100% DOD)

2.11 Calendar life 8years  
2.12 Charging Temperature 0~45℃  
2.13 Discharging Temperature -20~55℃  
2.14 Storage Temperature -10~30℃  
2.15

Pole torsion

 

≤5.5N·m Lock nut is recommended
2.16 Appearance Without break, scratch, distortion, contamination, leakage and so on
 

3.  Test Conditions

3.1 Standard Test Conditions

     3.1.1 Unless specified otherwise, all tests stated in this Product Specification are conducted at temperature 25℃±5℃ and humidity 15%~75℅RH, and atmospheric pressure 86 kPa~106kPa.

     3.1.2 Unless specified otherwise, all the product characteristics are tested with the products less than one month from shipping date and unused.

3.2 Standard Charge Method

In ambient temperature of 25℃±5℃, 1C discharge the cell until the voltage drops to 2.0V, standby for one hour, then charge at a constant current of 1C until the voltage is 3.65V, then charge at a constant voltage of 3.65V until its current decreases to 0.05C, standby for one hour after charge.

4.  Electrical Characteristics

item

Criteria

 

Test method Charge & discharge curve

4.1 High

Temperature

Discharge Performance

 

Capacity retention at 55℃

:≥95%

A cell is charged in accordance with 3.2, and stored in high temperature chamber at 55℃for 5 h, then discharged to cut-off voltage at a constant current of 1C. After that, fetch out the cell and place it in the ambient temperature of 25℃±5℃ for 4 h, then check its appearance. Prismatic Lifepo4 Battery Cells Low Self - Discharge 3.2V 12Ah 20Ah  25Ah  50Ah

4.2 Low

Temperature

Discharge

Performance

 

 

Capacity retention at -20℃

:≥70%

 

 

A cell is charged in accordance with 3.2, and stored in certain ambient temperature for 24hours,then discharged to cut-off voltage(1.8V) at a constant current of 1C. After that , fetch out the cell and place it in the ambient temperature of 25℃±5℃for 4hours.

 

4.3

Rate Charge Performance

in Normal Temperature

 

2C charge capacity≥80%

 

 

Under the ambient temperature of 25℃±5℃,

a, 1C constant discharge till the cut-off voltage, standby for 1h;

b, charge at certain current till 3.65V, standby for 1h;

c, constant discharge with 1C current till 2.0V.

Prismatic Lifepo4 Battery Cells Low Self - Discharge 3.2V 12Ah 20Ah  25Ah  50Ah

4.4

Rate Discharge Performance in Normal Temperature

 

3C discharge capacity≥95%

 

 

A cell is charged in accordance with 3.2, then discharged to cut-off voltage at certain current in an ambient temperature of 25℃±5℃.

 

Prismatic Lifepo4 Battery Cells Low Self - Discharge 3.2V 12Ah 20Ah  25Ah  50Ah

4.5 Cycle Life

(25℃±5℃)

 

 

≥2000cycles

A cell is 1C CC/CV 3.65V fully charged, after that stored for 30min; Subsequently, the cell is discharged to cut-off voltage at a constant current of 1C, and stored 30min prior to next charge-discharge cycle, until the capacity retention<80%, and record all the cycles

 

Prismatic Lifepo4 Battery Cells Low Self - Discharge 3.2V 12Ah 20Ah  25Ah  50Ah
 

Prismatic Lifepo4 Battery Cells Low Self - Discharge 3.2V 12Ah 20Ah  25Ah  50Ah

Prismatic Lifepo4 Battery Cells Low Self - Discharge 3.2V 12Ah 20Ah  25Ah  50Ah

Prismatic Lifepo4 Battery Cells Low Self - Discharge 3.2V 12Ah 20Ah  25Ah  50Ah

Prismatic Lifepo4 Battery Cells Low Self - Discharge 3.2V 12Ah 20Ah  25Ah  50Ah

 

5.  Environmental Characteristics

No. Item

Test Method

 

Criteria

 

5.1 Temperature shock test

A cell is charged in accordance with 3.2, and then repeat the following procedures for 5 cycles, then check the cell's appearance.

Prismatic Lifepo4 Battery Cells Low Self - Discharge 3.2V 12Ah 20Ah  25Ah  50Ah

No leakage, no fire, no explosion, no vent
5.2

Low-pressure

Test

 

A cell is charged in accordance with 3.2, then stored for 6h at a vacuum of -90KPa, after that put the cell in room temperature for 6h, then check the cell's appearance.

 

No leakage, no fire, no explosion, no vent
5.3 Vibration Test

A cell is charged in accordance with 3.2, and then installed onto the vibration desk with clamps. Equipment parameters of frequency and amplitude are set as bellow (the frequency is to be varied at the rate of 1oct/min between 10 and 55 Hz, and repeat vibration for 30 min. The cell is tested in three mutually perpendicular directions, i.e. X,Y,Z):

(a) frequency:10Hz~30Hz, amplitude: 0.38mm;

(b) frequency:30Hz~55Hz amplitude: 0.19mm

1.No scratch, no fire, no explosion, no vent;

2.The voltage is not less than 3.2V.

5.4

Shock Test

 

A cell is tested in accordance with 3.2, and then secured to the testing machine by means of rigid mount which supports all mounting surfaces of the cell. Each cell shall be subjected to a total of three shocks of equal magnitude. The shocks are to be applied in each of three mutually perpendicular directions. The acceleration and impulse time are as follows: acceleration of impulse peak value:100m/s2, shock frequency:40~80 times/min,

impulse lasting time:16 min,shock times:1000±10

 

1.No scratch, no leakage, no fire, no explosion, no vent;

2.the voltage is not less than 3.2V.

 

 
 
6.  Safety test

All below tests are carried out on the equipment with forced ventilation and explosion-proof device. Before test, all cells are charged in accordance with 3.2, and stored 24h prior to test.

 

No. Item

Test Method

 

Criteria

 

6.1 Short- circuit Test A cell is tested in accordance with 3.2, after that the cell is short-circuited by connecting the positive and negative terminals with a wire for 10min, the wire has a maximum resistance load of 5mΩ., then observe for 1h. No fire, no explosion
6.2

Overcharge

Test

 

A cell is tested in accordance with 3.2, then 1C constant current charged till the voltage reaches 1.5 times of the specified end-off charge voltage, or the charge time reaches 1h, then stop charge, and observe for 1h.

No fire, no explosion

 

6.3 Over discharge test A cell is tested in accordance with 3.2, then 1C discharge for 90min, then observe for 1h. No fire, no explosion, no leakage
6.4 Crush Test A cell is tested in accordance with 3.2, and then is placed on the crush flat, the axis is parallel to the crush flat, and it is crushed between two flat surfaces till the crushing force is gradually approaching 200 kN, or voltage reaches 0V,or reaches 30% distortion, then observe for 1h. No fire, no explosion
6.5

Impact Test

 

A cell is tested in accordance with 3.2, and then placed on the impact flat. A Φ15.8mm bar is to be placed on the center of the cell. A 9.1kg weight is dropped from a height of 610mm onto the cell, the distortion is allowed. No fire, no explosion
6.6

nail penetration Test

 

a) A cell is tested in accordance with 3.2;

b) use φ5mm~φ8mm high temperature resistance steel needle, with speed of 25±5mm/s, to go through the cell from vertical direction of pole plate, the penetrate position should be close to the geometric center of plate surface, the steel needle remains in the cell;

c)observe for 1h.

No fire, no explosion
6.7

Heating

Test(130℃)

A cell is tested in accordance with 3.2, and then heated in a circulating air oven. The temperature of the oven is raised at a rate of 5℃ per minute to 130℃±3℃ and remain for 30 min. No fire, no explosion
 
 
7.  Dimension
Prismatic Lifepo4 Battery Cells Low Self - Discharge 3.2V 12Ah 20Ah  25Ah  50AhPrismatic Lifepo4 Battery Cells Low Self - Discharge 3.2V 12Ah 20Ah  25Ah  50Ah

Contact Details
Shenzhen Topband Battery Co., Ltd

Contact Person: Jerry Yang

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