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LiFePO4 Battery Pack For E-Bike

LiFePO4-Battery-Pack-For-E-Bike
  • LiFePO4-Battery-Pack-For-E-Bike
  • LiFePO4-Battery-Pack-For-E-Bike
  • LiFePO4-Battery-Pack-For-E-Bike
  • LiFePO4-Battery-Pack-For-E-Bike
  • LiFePO4-Battery-Pack-For-E-Bike
Model No.︰12V40AH
Brand Name︰BEST
Country of Origin︰China
Unit Price︰US $ 1000 / pcs
Minimum Order︰2 pcs
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Product Description

Voltage (V)

Capacity (Ah)

Weight (kg)

Dimensions (mm)

Motor Power  (W)

12

40

4.5

185*105*145

400

24

10

3.0

150*70*145

250

20

4.5

145*135*145

350

30

6.5

205*135*145

450

40

8.5

280*135*145

800

36

10

4.0

115*135*145

400

20

6.5

210*135*145

600

30

10.0

305*135*145

800

40

13.5

280*200*145

1200

48

10

4.5

150*135*145

550

20

9.0

280*135*145

800

30

16.0

205*305*135

1200

40

20.0

275*305*135

1600

60

10

6.0

180*135*145

600

20

11.0

280*200*145

1000

30

20.0

240*305*135

1500

40

25.0

320*305*135

2000

 LiFePO4 Power Battery: Faster charging and safer performance

       It is clear that the small capacity Li-ion (polymer) Battery containing lithium cobalt oxide (LiCoO2) offers a genuinely viable option for electronics and digital applications. However, lithium cobalt oxide (LiCoO2) is very expensive and un-safe for large capacity Li-ion Battery. Recently lithium iron phosphate (LiFePO4) has been becoming "best-choice" materials in commercial Li-ion (polymer) Batteries for large capacity and high power applications, such as lap-top, power tools, e-wheel chair, e-bike, e-car and e-bus. A LiFePO4 battery has hybrid characters: as safe as lead-acid battery and as powerful as lithium ion cells. The advantages of large format Li-ion (polymer) batteries containing lithium iron phosphate (LiFePO4) are listed as below: 

      1. Fast charging:
      During charging process, a conventional Li-ion Battery containing lithium cobalt oxide (LiCoO2) needs two steps to be fully charged: step 1 is using constant current (CC) to get 60% State of Charge (SOC); step 2 takes place when charge voltage reaches 4.2V, upper limit of charging voltage, turning from CC to constant voltage (CV) while the charging current is taping down. The step 1 (60%SOC) needs two hours and the step 2 (40%SOC) needs another two hours. LiFePO4 battery can be charged by only one step of CC to reach 95%SOC or be charged by CC+CV to get 100%SOC. The total charging time will be two hours. 


      2. Large overcharge tolerance and safer performance
      A LiCoO2 battery has a very narrow overcharge tolerance, about 0.1V over 4.2V of charging voltage plateau and upper limit of charge voltage. Continuous charging over 4.3V would either damage the battery performance, such as cycle life, or result in firing and explosion. A LiFePO4 battery has a much wider overcharge tolerance of about 0.7V from its charging voltage plateau 3.4V. Exothermic heat of chemical reaction with electrolyte measured by DSC after overcharge is only 90J/g for LiFePO4 verse 1600J/g for LiCoO2 . The more is the exothermic heat, the larger energy heating up the battery in its abusive condition, the more chance toward firing and explosion. A LiFePO4 battery would be overcharged upto 30V without portection circuit board. It is suitable for large capacity and high power applications. From viewpoint of large overcharge tolerance and safety performance, a LiFePO4 battery is similar to lead-acid battery. 

 

      3. Self balance 
      Alike lead-acid battery, a number of LiFePO4 cells in a battery pack in series connection would balance each other during charging process, due to large overcharge tolerance. This self balance character can allow 10% difference between cells for both voltage and capacity inconsistency.

 

    4. Simplifying battery management system (BMS) and battery charger
      Large overcharge tolerance and self-balance character of LiFePO4 battery would simplify battery protection and balance circuit boards, lowering their cost. One step charging process would allow to use simpler conventional power supplier to charge LiFePO4 battery instead to use a expensive professional Li-ion battery charger.
      5. Longer cycle life 
      In comparison with LiCoO2 battery which has a cycle life of 400 cycles, LiFePO4 battery extends its cycle life up to 2000 cycles. 
      6. High temperature performance 
      It is detrimental to have a LiCoO2 battery working at elevated temperature, such as 60C.. However, a LiFePO4 battery runs better at elevated temperature, offering 10% more capacity, due to higher lithium ionic conductivity.

 

Price Terms︰FOB HONG KONG
Payment Terms︰TT/Paypal/Westunion
Packing︰Export Carton box
Lead Time︰7 days after receive the payment
Product Image

LiFePO4-Battery-Pack-For-E-Bike
LiFePO4-Battery-Pack-For-E-Bike

LiFePO4-Battery-Pack-For-E-Bike
LiFePO4-Battery-Pack-For-E-Bike

LiFePO4-Battery-Pack-For-E-Bike
LiFePO4-Battery-Pack-For-E-Bike

LiFePO4-Battery-Pack-For-E-Bike
LiFePO4-Battery-Pack-For-E-Bike

LiFePO4-Battery-Pack-For-E-Bike
LiFePO4-Battery-Pack-For-E-Bike

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