48V200ah LiFePO4 Battery Packs for Energy Storage, Electrical Vehicle, UPS, etc

Production
  2.1 : Product Name: Lithium ion phosphate energy cell
  2.2:SJLFP200A           Specification: SJLFP200A

2.:Cell Dimensions:

ItemDescriptionDimension
LLength178mm ±1mm
W Width70mm±1mm
HHeight278mm±1mm



3.  Basic technical parameters:
Voltage:48V
Capacity:200Ah
Working voltage: 40V~58.4V
Max. discharge rate: 3C
Peak discharge rate: 5C
Applicaiton: energy storage, electric vehicle, UPS, Bus, HEV etc.

4. Electrical Characteristics
1. Discharging Characteristics Under Nominal temperature
Discharging Capacity/Nominal Capacity×100%
A)0.3CA ≥100%
B)0.5CA ≥98%
C)1CA ≥95%

After the process of standard charging, the cell should be set aside for 1 hour, afterwards, discharging it at the current of 0.3C(A),0.5C(A),1C(A) separately until it reaches to minimum voltage of 2.5V, the test is allowed to be repeat 3 times if the discharging capacity can't reach to the nominal one.

2. Discharging Characteristics At Different Temperatures
Discharging Capacity/Nominal Capacity×100%

A)55ºC≥95% (discharging cut-off voltage: 2.5V)
B) 0ºC≥90%(discharging cut-off voltage:2.5V)
C) -10ºC≥80%(discharging cut-off voltage:2.0V)
D) -20ºC≥70%(discharge cut-off voltage:2.0V)

Measuring cell's initial capacity and initial status. After the process of standard charging, the cell should be set aside for 3 hours at the constant temperature of 55±2ºC, afterwards, discharging it at the current of 0.3C(A) until it reaches to the cut-off voltage, and then, operating the procedure of standard charging at room temperature. At constant temperature, shelving the cell for 20mins in the proper sequence of 0±2 ºC/-10±2 ºC/-20±2ºC, and measuring the cut-off capacity of it at the current of 0.3C(A).

3. Energy Retention Capability    At Room Temperature
Residual Capacity≥ Nominal Capacity×95%
Recoverable Capacity ≥Nominal Capacity×97%

Measuring cell's initial capacity and initial status. After standard charging, shelving the cell for 30 days under the condition of open circuit, and then, measuring the final status; calculating residual capacity of the cell when it reaches to the discharging cut-off voltage after discharging it at the current of 0.3C(A). The energy retention capability can be expressed as the percentage of nominal capacity. After nominal charging, shelving the cell for 30mins at the ambient temperature 0f (25±5)ºC, discharging the cell until it reaches to cut-off voltage. Calculating discharging capacity(by Ah). The capability of capacity recoverable can be expressed as the percentage of nominal capacity.


4. Life Cycle  ≥2000 Times

After the process of standard charging, shelving the cell for 30mins, afterwards, discharging the cell at the current of 0.3C until it reaches to cut-off voltage at the  ambient temperature of (25±5)ºC, and then proceed to the next cycle until the capacity reduce to 80% of the initial one. The numbers of cycling is defined as the cell's life cycle.


5. Long-term Storage

The cell should be stored(more than 1 month) in clear, dry and ventilated room under ambient temperature of -20ºC~45ºC, and it should be kept away from caustic material, combustion source and heat source. Charging and discharging the cell every six months, and make sure the storage voltage should be 3.2~3.35V.