No.
 

Item
 

General Parameter
 

Remark
 

1

Combination method
 

13S25P
 

Single cell 18650 2200mah 3.7v

2

Combination standard
for single cell

Capacity difference≤2%

Combination after 0.15C discharge to 2.5V
 

Resistance difference ≤10mΩ

Voltage difference≤8mV

3

Rated Capacity
 

Typical
 

50Ah

Standard discharge after Standard charge(package)
 

Minimum
 

50Ah

4

Nominal Voltage
 

48V

Mean Operation Voltage
 

5

Voltage at end of
Discharge
 

42V

Discharge Cut-off Voltage
 

6

Charging Voltage
 

 
54.6V

7

Internal Impedance
 

≤100mΩ

Internal resistance measured at AC 1KHZ after 50% charge
 
The measure must uses the new batteries that within one week after shipment and cycles less than 5 times
 

8

Standard charge
 

Constant Current 10A
Constant Voltage54.6V
0.01CA cut-off
 

Charge time : Approx 6 h
 

9

Standard discharge
 

Constant current:10A
end voltage 42V
 

10

Maximum Continuous Charge Current
 

50A

No.
 

Item
 

General Parameter
 

Remark
 

11

Maximum Continuous Discharge Current
 

50A

12

Operation Temperature Range
 

Charge: 0~45℃

60±25%R.H.
Bare Cell
 

Discharge: -20~60℃

13

Storage Temperature Range
 

Less than 12 months : -20~25℃
 

60±25%R.H.
at the shipment state
 

less than 3 months: -20~40℃
 

Less than 7 day : -20~65℃
 

14

Dimensions
 

L440*W440*T88(mm)

including the outer shell

15

Weight
 

18kg

ncluding the outer shell