No

 Item

 Specification

 1

 Nominal Voltage

 DC 144V

 2

 Nominal Capacity

 4Ah

 3

 Charging Voltage

 MAX 168V 

 4

 Charging Method

 Constant Current/Constant Voltage 

 5

 Discharge Cut off Voltage 

 120 V

 6

 Nominal Charging Current 

 0.5C 

 7

 Max Charging Current

 4A

 8

 Standard Discharge Current

 0.2C(0.4A)

 9

 Max Discharge Current 

 20A

 10

 Cycle Life

 500cycle, 80%

 11

 Operating Temperature

 For charging:  0 to +45°C /

 For discharge: -20  to +60°C

 12

 Over Charge Dection Voltage

 4.275V ± 0.025V/Cell

 13

 Over Discharge Dection Voltage

 3.0V ± 0.08V/Cell

 14

 Over Discharge Current Detction

 20A ± 1A

 15

 Weight(g)

 8.7Kg

 16

 Dimension(mm)

 (W)271*361(L)*93(H)

 17

 Fundction

RS-232C Comunication,Cell Balancing