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

4. Types and Dimensions 

Table 1-1 type specifications 

Battery Type 

Rated 

Voltage 

per  cell 

(V) 

Rated Capacity    (Ah) 

Dimensions (mm) 

Weight 

(Kg) 

C

10

 

C

100

 

Length 

Width 

Height 

Overall 

Height 

End-volta

ge   

1.80V 

End-volt

age 

1.85V 

12REXC70 

60 

70 

280 

180 

230 

244 

30 

12REXC200 

165 

200 

438 

227 

281 

294

 

79.5 

6REXC300 

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,  that  can 
reduce lead deposition overpotential, the lead sulfate will be translated into lead more 
easily.  Growing  up  of  lead  sulfate  can  be  suppressed  efficiently  through  this 
technology. 

 

Fig.1-3 Lead carbon negative electrode surface current distribution sketch map 

 

The chemical reaction taking place in lead carbon battery is as follows: 
positive electrode: 
 
 

电池槽

 

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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