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Narada Power Source Co., Ltd.                                                                                      12REXC operation manual V1.0         

Chapter One Introduction of 12REXC series 

12REXC series battery is designed for renewable energy sources such as wind power 
and  solar  system,  and  developed  for  home  energy  system  with  long  life,  high  energy 
efficiency, superb security and reliability characteristic, which can be applied to energy 
storage system, telecom and generator, etc. 

1. Product Characters 

 

Lead  carbon  battery  add  carbon  material  with  high  capacitance  or  highly 
conductive  into  the  negative  electrode,  combine  the  advantages  of  lead  acid 
battery  and  super  capacitors,  lead  carbon  battery  provide  not  only  high  energy 
density, but also high power, rapid charge and discharge, longer cycle life. 

 

Combine the advantages of lead acid battery and super capacitors 

 

Ideal for PSOC cycle application 

 

Excellent  recharge  acceptance  performance,  super  fast  charge/large  discharge 

performance 

 

Reduce sulfation of the negative plate, longer cycle life 

1.1

 Design life is above 20 years   

Grid alloy with special patented formula 

Special patented negative paste formula 

4BS paste technology 

Extra-thick plate design 

1.2 

Initial capacity above 100%, the remaining capacity above 90% when storage for 3 

months (25º

C) 

1.3

 Remarkable high rate discharge performance.   

Low internal resistance. Patented grid design. Large section copper structure 

1.4

 Innovation patented lead carbon technology   

The innovation patented lead carbon technology can solve sulfation of the negative 

plate  when  used  underfilling;  compare  with  tradition  VRLA  battery,  cycle  life  of  the 

lead carbon battery can be extended 3-10 times 

1.5

 Ideal for PSOC cycle application 

Cycle use at 80% SOC (part state of charge) can be longer PSOC cycle life, which 

especially designed for solar or wind energy storage system 

1.6 

Supply the unique flexible connectors made of rubber wrapped with copper wires 

and another option is copper bar connector. 

Assure the good connections of post and connectors and low connection resistance; 

Summary of Contents for 12REXC70

Page 1: ...LEAD CARBON BATTERY OPERATION MANUAL Version V1 0 NARADA POWER SOURCE CO LTD 12REXC Series Series...

Page 2: ...d Carbon Working Principle 6 Chapter Two Technical characteristic 7 1 Discharge Curve and Discharge Data 7 2 Charge Curve 8 3 Internal Resistance and Short Circuit Current 8 Chapter Three Operation an...

Page 3: ...reat harms to environment and heath Please check local laws and regulations to get the validity handle ways or send the equipment to authorized service center The replacement of battery can only be do...

Page 4: ...erformance Reduce sulfation of the negative plate longer cycle life 1 1 Design life is above 20 years Grid alloy with special patented formula Special patented negative paste formula 4BS paste technol...

Page 5: ...vide up to 8 class shockproof Streamline and dime light battery outside looking design 2 Main applications Home energy storage system Hybrid energy system such as solar and wind energy Distributed ene...

Page 6: ...XC300 2 250 300 338 227 281 294 61 5 Lead Carbon Working Principle Fig 1 2 Lead carbon battery working principle sketch map It forms a new active center in negative electrode by adding active carbon t...

Page 7: ...e vent hydrogen over potential gassing on the negative plate which prevents generation of hydrogen Otherwise the oxygen generated from positive diffuses through separator to the negative and the oxyge...

Page 8: ...Internal Resistance and Short Circuit Current The internal resistance of the battery is a dynamic nonlinear parameter that is continuously changed along with the temperature and discharge state The i...

Page 9: ...mpensate Ratio With Floating Voltage mV cell 3 3 Temperature Compensate Ratio With Equalization Voltage mV cell 5 5 High Temperature Warning 35 35 Short circuit protection current A Please refer to ta...

Page 10: ...e Actual Capacity is the actual output capacity in certain discharge conditions which is equal to product of the discharge current and the discharge time the unit is AH The actual capacity is effected...

Page 11: ...in best conditions If the floating voltage is higher the floating current is also higher it will accelerate the corruption of grids and shorten the life of the battery If the floating voltage is lowe...

Page 12: ...Float Voltage V cell 15 2 350 2 275 20 2 325 2 260 25 2 300 2 245 30 2 275 2 230 35 2 250 2 215 40 2 225 2 200 3 2 Ambient temperature vs Battery Life The high temperature will damage the battery red...

Page 13: ...to test battery conductance and resistance data at different stage with same type instruments from same factory Conductance and resistance data is only a reference to judge whether battery is good Th...

Page 14: ...o change to equalization charge equalization voltage is recommended The charge time is 24 hours We can also setup the charge voltage according to different DOD different charge current shown in figure...

Page 15: ...At the last one hour before finishing test the battery voltage one by one the battery which voltage is below 2 16V cell should be dealt with the method in chapter 3 3 if that battery can not accord w...

Page 16: ...e when another necessary supplementary charge should be made The quality certificates of 12REXC series batteries record the latest charge time of the batteries next charge time can be calculated accor...

Page 17: ...he end voltage is also an important parameter for battery The battery shall stop discharge when reach a certain voltage The normal end voltage is 1 8Vpc for 10 hours rated If the end voltage is too lo...

Page 18: ...1 0 18 Annex 1 VRLA Battery Regular Maintenance Record Type Place Status Number of battery Total Voltage V Current A Temperature No Voltage V No Voltage V 1 13 2 14 3 15 4 16 5 17 6 18 7 19 8 20 9 21...

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