battery narada manual

VALVE REGULATED SEALED LEAD ACID BATTERY

OPERATION

MANUAL

Version：V2.0

NARADA POWER SOURCE CO., LTD.

EosG Series

Website: www.naradabattery.com

Narada Power Source Co., Ltd. EosG series operation manual V2.0

Content

Safety and warning Chapter One Introduction to the Product 1. Product Characters 2. Main application domain 3. Construction 4. Types and Dimensions 5. Working Principal Chapter Two Technical characteristic 1. Discharge Curve 2. Charge Performance 3. Choose Battery 4. Internal resistance and short circuit current Chapter Three Operation and Maintenance 1. Parameters 2. Capacity and Influence Factor 3. Ambient temperature Vs. Battery 4. Requirement for Charge 5. Storage 6. Maintenance After- sale Service Annex 1

- 2 -


Safety and warning

Please read this manual! It provides very important direction for fix and operation, which can

make best capability for the equipment, and elongate the using life.

For your safety, please do not try to open it, equipment does not contain spare part. The

maintain work can only be done by our trained woke servitors

As a result of the battery’s latent endanger to heath and environment, they should be only

changed in our authorization service center. If you need to change the battery or maintain

the equipment, please call the nearest service center.

Batteries can be reclaimed, if it could not be carefully handled, it would bring a lot of

endangers to environment and heath. Please check laws to get the validity ways or send

the equipment to service center.

The changer of battery can only be done by person who knows well about the danger and

the prevention. When changing the battery, please use the same model and type sealed

lead acid battery.

Warning—do not smoke or use fire near batteries。

Warning—do not use organic solvent to wash batteries

Warning—dot not put batteries into the fire, or it may bombed。

Warning—do not open batteries, it contains electrolyte, which can hurt the skin and eyes。

Please take care of the following marks in using

Warning Electricity

danger Protecting your eye

Watch

Short-circuits With adults custody

Read the

manual

Fire

forbidden Circle use

Do not put

batteries into

dustbin

The product has past

the UL Safe

authentication

- 3 -


Chapter One Introduction to the Product

1. Product Characters:

Design life is above 15 years in float application and cycle life is above 1200

times in 80% DOD (Depth of Discharge) term

Using the polymer gel electrolyte

Grid alloy with special patented formula

4BS paste technology

Extra-thick plate design

Reliable seal performance, no acid spillage, recombination efficiency reach

99%

Patented post sealing structure

“Labyrinth” patented security valve

High precise ABS sealing technology

Initial capacity above 100%, the remaining capacity above 94% when

storage for 3 months (25ºC)

Remarkable high rate discharge performance

Low internal resistance

Patented grid design

Large section copper structure

Supply the Unique flexible connectors made of rubber wrapped with copper

wires with Patented silver-coated ends and another option is copper bar connector.

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

Combination of suppleness and rigidity for more flexible connections

Monitor hole designed

Flexible and convenient installation, slinky outside looking

Shockproof blocking assembling

Satisfy customer’s individual requirements and provide up to 8-class

shockproof

Streamline and dime-light battery outside-looking design.

- 4 -


2. Main application domain Correspondence exchange and transmission system

Mobile communication system

Power plant and power transformer system

Navigation aid signaling system

Solar energy system

Radio and broadcasting station

Emergency lighting system

Other spare, circulatory system

3. Construction

- 5 -


4. Types and Dimensions Table 1-1 type specifications

Rated Capacity

(Ah) Dimensions (mm) Cell Type

Rated Voltage

(V) C10 C3 C1 Length Width Height Overall Height

Weight(kg)

EosG200 2 200 150 110 94.5 184.5 360.5 372 14.5

EosG300 2 300 225 165 123 184.5 360.5 372 19.4

EosG400 2 400 300 220 166 184.5 360.5 372 26.5

EosG500 2 500 375 275 194.5 184.5 360.5 372 31.3

EosG600 2 600 450 330 223 184.5 360.5 372 37.5

EosG800 2 800 600 440 154 229 555 566 52.7

EosG1000 2 1000 750 550 186 229 555 566 62.8

EosG1200 2 1200 900 660 225 229 555 566 75.5

EosG1500 2 1500 1125 825 265.5 229 555 566 93

EosG2000 2 2000 1500 1100 349 233 555 566 122

5. Working Principal The chemical reaction-taking place in lead acid battery is as follows: Pb+PbO2+2H2SO4 2PbSO4+2H2O

Discharge

Charge Following by-reaction ① takes place in ordinary lead acid battery: 2H2O 2H2↑+O2↑ ①

This by-reaction makes water loss gradually and pure water need to be added regularly to keep the battery operate normally. EosG battery adopts design of barren-liquor and utilizes AGM (micro porous glass fiber) separator. Thus there is a path existing between the positive and the negative. Also special alloy grid is chosen to increase 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 oxygen gas reacts quickly and is recombined into water. The reactions are as follows:： 2Pb +O2 2PbO ② PbO+ H2SO4 PbSO4 +H2O ③ So it is possible to build EosG battery in sealed structure. - 6 -


Chapter Two Technical characteristic 1. Discharge Curve

Fig. 2-1 Discharge Performance Curves at Different Discharge Rates（25）

Time (h)

Voltage （V）

2. Charge Curve

Fig.2-2 recharge characteristics of 100% DOD EosG500 battery with current of 0.1C10A and limit voltage of 2.35V/Cell (25)

1.95

2.05

2.15

2.25

50% DOD60

40

20

0840

0.00

0.05

24201612

Charge Time(h)

Charge Current

Cha

rge

Cap

acity

(%)120

100

80

Charge Voltage

0.10

2.35

Cha

rge

Vol

tage

Cha

rge

Cur

rent

(CA) (V)

100% DOD

Charge Capacity

- 7 -

Table2-1 Constant current discharge characteristic (A, 25) EosG200

End voltage

per cell 5min 15min 30min 1h 2h 3h 5h 6h 8h 10h 24h 48h 100h

1.60V 347.6 292.4 208.8 132.0 77.9 57.2 38.8 33.5 26.7 22.2 10.0 5.2 2.8

1.65V 331.2 279.2 200.0 125.2 76.1 55.8 37.8 33.0 26.3 21.9 9.9 5.2 2.8

1.70V 311.2 266.8 184.0 119.6 73.3 54.2 37.5 32.6 25.8 21.6 9.9 5.1 2.7

1.75V 290.4 246.0 171.0 114.0 70.8 52.5 36.5 32.1 25.5 21.3 9.8 5.1 2.7

1.80V 266.5 220.0 160.0 106.8 67.7 50.9 35.6 31.3 25.0 20.8 9.6 5.0 2.6

1.85V 235.9 195.1 142.7 96.4 61.1 48.3 34.4 30.3 24.3 20.2 9.3 4.9 2.5

1.90V 200.4 163.2 122.4 85.6 57.3 45.3 33.1 29.1 23.4 19.6 9.1 4.7 2.4

EosG300

End voltage


1.60V 521.4 438.6 313.2 198.0 116.9 85.8 58.2 50.2 40.0 33.2 15.0 7.8 4.2

1.65V 496.8 418.8 300.0 187.8 114.2 83.7 56.7 49.5 39.5 32.9 14.9 7.7 4.2

1.70V 466.8 400.2 276.0 179.4 110.0 81.3 56.3 48.9 38.8 32.4 14.8 7.7 4.1

1.75V 435.6 369.0 256.5 171.0 106.2 78.7 54.7 48.1 38.3 31.9 14.7 7.6 4.0

1.80V 399.7 330.0 240.0 160.2 101.6 76.3 53.4 46.9 37.6 31.2 14.4 7.5 3.9

1.85V 353.9 292.6 214.0 144.6 91.7 72.4 51.6 45.4 36.5 30.4 13.9 7.3 3.7

1.90V 300.6 244.8 183.6 128.4 86.0 67.9 49.7 43.7 35.1 29.3 13.6 7.1 3.6

EosG400

End voltage


1.60V 695.2 584.8 417.6 264.0 155.9 114.4 77.6 66.9 53.4 44.3 20.0 10.4 5.6

1.65V 662.4 558.4 400.0 250.4 152.3 111.6 75.7 66.0 52.7 43.8 19.9 10.3 5.6

1.70V 622.4 533.6 368.0 239.2 146.7 108.4 75.0 65.2 51.7 43.2 19.8 10.2 5.5

1.75V 580.8 492.0 342.0 228.0 141.5 105.0 72.9 64.1 51.1 42.6 19.6 10.1 5.3

1.80V 532.9 440.0 320.0 213.6 135.5 101.8 71.3 62.5 50.1 41.6 19.2 9.9 5.2

1.85V 471.9 390.1 285.3 192.8 122.2 96.6 68.8 60.5 48.7 40.5 18.6 9.7 5.0

1.90V 400.8 326.4 244.8 171.2 114.6 90.6 66.3 58.3 46.8 39.1 18.2 9.4 4.8

EosG500

End voltage


1.60V 869 731 522 330 194.9 143.0 97.0 83.7 66.7 55.4 24.9 13.00 7.06

1.65V 828 698 500 313 190.4 139.5 94.6 82.6 65.8 54.8 24.8 12.90 6.95

1.70V 778 667 460 299 183.3 135.5 93.8 81.5 64.6 54.0 24.7 12.79 6.85

1.75V 726 615 427 285 176.9 131.2 91.2 80.2 63.8 53.2 24.4 12.64 6.66

1.80V 666 550 400 267 169.3 127.2 89.1 78.1 62.6 52.0 24.0 12.43 6.45

1.85V 590 488 357 241 152.8 120.7 86.1 75.6 60.8 50.6 23.2 12.14 6.24

1.90V 501 408 306 214 143.3 113.2 82.9 72.8 58.5 48.9 22.7 11.80 5.95

EosG600

End voltage


1.60V 1042.8 877.2 626.3 396.0 233.8 171.6 116.4 100.4 80.1 66.5 29.9 15.6 8.5

1.65V 993.6 837.6 599.9 375.6 228.4 167.4 113.5 99.1 79.0 65.8 29.8 15.5 8.3

1.70V 933.6 800.4 551.9 358.8 220.0 162.5 112.5 97.7 77.5 64.8 29.7 15.4 8.2

1.75V 871.2 738.0 512.9 342.0 212.3 157.5 109.4 96.2 76.6 63.8 29.3 15.2 8.0


1.80V 799.4 659.9 480.0 320.4 203.2 152.7 106.9 93.8 75.1 62.4 28.9 14.9 7.7

1.85V 707.8 585.2 428.0 289.2 183.3 144.9 103.3 90.8 73.0 60.7 27.9 14.6 7.5

1.90V 601.2 489.6 367.2 256.8 171.9 135.9 99.4 87.4 70.2 58.7 27.3 14.2 7.1

EosG800

End voltage


1.60V 1164.0 979.5 795.9 524.5 323.0 237.1 155.0 133.6 104.6 85.7 39.7 21.2 11.9

1.65V 1091.5 921.9 725.9 495.1 313.8 230.7 153.1 132.0 103.7 85.3 39.2 21.1 11.7

1.70V 1025.9 872.4 663.8 470.4 303.0 220.4 149.3 128.8 102.2 83.9 39.0 20.9 11.5

1.75V 967.7 821.1 612.1 441.0 291.9 215.3 146.7 126.9 100.8 83.2 38.7 20.6 11.2

1.80V 914.2 765.8 573.1 418.4 283.1 208.6 142.4 123.5 98.1 82.1 37.8 20.3 10.9

1.85V 784.9 651.4 503.8 372.5 255.2 193.1 134.4 117.6 94.9 78.8 36.7 19.3 10.5

1.90V 642.9 514.3 418.7 306.1 213.3 171.7 121.7 106.1 85.6 71.8 34.3 18.0 9.7

EosG1000

End voltage


1.60V 1455.0 1224.3 994.9 655.6 403.7 296.4 192.8 166.1 130.1 106.6 49.4 26.4 14.8

1.65V 1364.4 1152.4 907.3 618.8 392.3 288.4 190.4 164.2 128.9 106.0 48.7 26.2 14.6

1.70V 1282.3 1090.5 829.7 588.0 378.8 275.5 185.7 160.2 127.1 104.4 48.5 26.0 14.4

1.75V 1209.6 1026.4 765.1 551.2 364.9 269.2 182.5 157.8 125.3 103.5 48.1 25.7 14.0

1.80V 1142.8 957.3 716.3 523.0 353.9 260.8 177.1 153.6 122.0 102.1 47.1 25.2 13.5

1.85V 981.2 814.2 629.8 465.6 319.0 241.4 167.1 146.3 118.0 97.9 45.7 24.0 13.1

1.90V 803.6 642.9 523.3 382.7 266.7 214.6 151.4 132.0 106.4 89.3 42.7 22.4 12.1

EosG1200

End voltage


1.60V 1744.3 1467.7 1192.7 786.0 484.5 355.7 232.5 200.8 157.2 128.9 59.7 31.9 17.9

1.65V 1635.7 1381.5 1087.7 741.8 470.7 346.1 229.7 198.4 155.8 128.2 58.9 31.6 17.6

1.70V 1537.2 1307.3 994.7 704.9 454.6 330.6 223.9 193.6 153.6 126.1 58.6 31.4 17.3

1.75V 1450.1 1230.5 917.2 660.8 437.8 323.0 220.1 190.7 151.5 125.1 58.1 31.0 16.9

1.80V 1370.0 1147.6 858.7 626.9 424.7 312.9 213.6 185.7 147.4 123.4 56.9 30.5 16.3

1.85V 1176.2 976.1 755.0 558.2 382.8 289.7 201.6 176.8 142.6 118.4 55.2 29.0 15.8

1.90V 963.3 770.7 627.4 458.8 320.0 257.5 182.5 159.5 128.6 107.9 51.6 27.1 14.6

EosG1500

End voltage


1.60V 2182.6 1836.5 1492.4 983.5 605.6 444.6 287.8 247.9 194.1 159.2 73.8 39.4 22.1

1.65V 2046.7 1728.6 1361.0 928.2 588.4 432.6 284.2 245.0 192.4 158.3 72.7 39.1 21.8

1.70V 1923.5 1635.8 1244.6 882.0 568.2 413.2 277.1 239.1 189.7 155.8 72.4 38.8 21.4

1.75V 1814.5 1539.6 1147.6 826.8 547.3 403.7 272.4 235.5 187.1 154.5 71.7 38.3 20.8

1.80V 1714.2 1435.9 1074.5 784.5 530.8 391.2 264.3 229.3 182.0 152.4 70.2 37.6 20.2

1.85V 1471.7 1221.4 944.7 698.4 478.5 362.1 249.4 218.3 176.2 146.2 68.2 35.8 19.5

1.90V 1205.4 964.3 785.0 574.0 400.0 321.9 225.9 197.0 158.8 133.2 63.7 33.5 18.0

EosG2000

End voltage


1.60V 2910.1 2448.6 1989.8 1311.3 807.5 592.8 383.7 330.6 258.8 212.2 98.3 52.5 29.4

1.65V 2728.9 2304.8 1814.7 1237.7 784.5 576.9 379.0 326.6 256.6 211.0 96.9 52.1 29.0

9


1.70V 2564.6 2181.0 1659.5 1176.0 757.6 550.9 369.5 318.8 252.9 207.7 96.5 51.7 28.6

1.75V 2419.3 2052.9 1530.2 1102.5 729.7 538.3 363.2 314.1 249.4 205.9 95.7 51.0 27.8

1.80V 2285.6 1914.5 1432.7 1045.9 707.8 521.6 352.4 305.7 242.7 203.2 93.6 50.2 26.9

1.85V 1962.3 1628.5 1259.5 931.2 638.0 482.8 332.6 291.1 234.9 194.9 90.9 47.8 26.0

1.90V 1607.1 1285.7 1046.6 765.4 533.3 429.2 301.2 262.6 211.8 177.6 84.9 44.6 24.0

Table2-2 discharge data with constant power (Watts, 25) EosG200

End voltage

per cell 5min 15min 30min 1h 2h 3h 4h 5h 6h 8h 10h 24h

1.60V 573.8 480.6 382.7 270.6 174.6 129.3 103.1 85.4 73.0 57.0 46.6 21.0

1.65V 545.8 461.2 362.0 250.0 160.2 121.4 97.8 82.4 70.6 54.9 45.4 20.6

1.70V 524.7 444.8 352.9 238.1 155.5 117.1 94.5 80.6 69.2 53.7 44.1 20.2

1.75V 508.3 428.1 340.9 228.8 150.0 112.7 92.5 78.6 67.6 51.7 43.4 20.0

1.80V 494.3 408.1 328.9 223.5 147.2 108.8 89.5 76.4 65.7 50.4 42.8 19.7

1.85V 449.5 371.6 292.4 203.3 135.3 103.0 86.1 72.8 62.2 48.7 41.1 18.9

1.90V 396.7 322.5 246.7 175.1 117.4 95.5 80.1 68.0 58.1 45.6 38.1 17.7

EosG300

End voltage


1.60V 853.9 715.1 569.4 402.6 259.8 192.4 153.5 127.1 108.6 84.8 69.3 31.2

1.65V 812.1 686.3 538.6 372.0 238.3 180.6 145.6 122.7 105.1 81.7 67.6 30.6

1.70V 780.8 661.9 525.2 354.3 231.4 174.2 140.6 119.9 103.0 79.9 65.6 30.0

1.75V 756.4 637.1 507.3 340.5 223.2 167.8 137.7 116.9 100.7 77.0 64.6 29.8

1.80V 735.5 607.2 489.4 332.6 219.1 161.8 133.2 113.7 97.7 75.0 63.7 29.3

1.85V 668.9 553.0 435.1 302.5 201.3 153.3 128.1 108.4 92.5 72.5 61.2 28.1

1.90V 590.3 479.9 367.0 260.5 174.7 142.1 119.3 101.3 86.4 67.9 56.7 26.3

EosG400

End voltage


1.60V 1147.7 961.2 765.4 541.2 349.2 258.6 206.3 170.8 145.9 114.0 93.1 42.0

1.65V 1091.5 922.4 723.9 500.1 320.3 242.7 195.6 164.9 141.3 109.8 90.9 41.2

1.70V 1049.4 889.7 705.9 476.2 311.0 234.1 189.0 161.2 138.5 107.4 88.2 40.4

1.75V 1016.7 856.3 681.8 457.6 300.0 225.5 185.0 157.2 135.3 103.5 86.9 40.0

1.80V 988.6 816.2 657.7 447.0 294.5 217.5 179.1 152.8 131.3 100.8 85.6 39.4

1.85V 899.0 743.3 584.9 406.5 270.6 206.0 172.2 145.6 124.4 97.5 82.2 37.8

1.90V 793.4 645.0 493.3 350.2 234.8 191.0 160.3 136.1 116.2 91.2 76.3 35.4

EosG500

End voltage


1.60V 1434.6 1201.5 956.7 676.5 436.5 323.3 257.8 213.6 182.4 142.6 116.4 52.5

1.65V 1364.4 1153.0 904.9 625.1 400.4 303.4 244.6 206.1 176.6 137.3 113.6 51.5

1.70V 1311.8 1112.1 882.3 595.2 388.8 292.6 236.3 201.4 173.1 134.3 110.3 50.5

1.75V 1270.8 1070.3 852.2 572.0 375.0 281.9 231.3 196.5 169.1 129.3 108.6 50.0

1.80V 1235.8 1020.2 822.2 558.7 368.1 271.9 223.8 191.0 164.1 126.0 106.9 49.2

1.85V 1123.8 929.1 731.1 508.2 338.2 257.5 215.2 182.0 155.4 121.9 102.8 47.3

10


1.90V 991.8 806.3 616.6 437.7 293.5 238.8 200.4 170.1 145.2 114.0 95.3 44.3

EosG600

End voltage


1.60V 1706.0 1428.8 1137.7 804.5 519.0 384.5 306.6 254.0 216.9 169.5 138.4 62.4

1.65V 1622.6 1371.2 1076.1 743.3 476.2 360.8 290.8 245.1 210.0 163.3 135.1 61.2

1.70V 1560.0 1322.5 1049.3 707.8 462.4 348.0 281.0 239.6 205.8 159.7 131.1 60.0

1.75V 1511.3 1272.8 1013.5 680.2 446.0 335.2 275.1 233.6 201.1 153.8 129.1 59.4

1.80V 1469.6 1213.2 977.7 664.5 437.7 323.4 266.2 227.1 195.2 149.8 127.2 58.6

1.85V 1336.4 1104.9 869.4 604.3 402.2 306.2 255.9 216.5 184.8 144.9 122.2 56.2

1.90V 1179.4 958.8 733.3 520.5 349.0 283.9 238.3 202.3 172.7 135.6 113.4 52.6

EosG800

End voltage


1.60V 2272.4 1903.2 1515.4 1079.1 696.3 515.7 411.3 340.7 290.9 227.4 185.7 83.7

1.65V 2161.3 1826.4 1433.3 997.1 638.7 484.0 390.1 328.8 281.7 219.0 181.2 82.1

1.70V 2077.9 1761.6 1397.6 949.5 620.2 466.8 376.9 321.3 276.1 214.2 175.9 80.5

1.75V 2013.0 1695.4 1350.0 912.5 598.3 449.6 369.0 313.4 269.8 206.3 173.2 79.7

1.80V 1957.4 1616.0 1302.3 891.3 587.2 433.8 357.1 304.7 261.8 201.0 170.6 78.6

1.85V 1780.1 1471.7 1158.1 810.6 539.5 410.7 343.3 290.4 248.0 194.4 164.0 75.4

1.90V 1571.0 1277.2 976.7 698.2 468.1 380.9 319.6 271.4 231.7 181.9 152.1 70.6

EosG1000

End voltage


1.60V 2840.5 2379.0 1894.2 1348.9 870.3 644.7 514.1 425.8 363.7 284.3 232.1 104.6

1.65V 2701.6 2283.0 1791.7 1246.4 798.4 605.0 487.6 410.9 352.1 273.7 226.5 102.7

1.70V 2597.3 2202.0 1747.0 1186.9 775.3 583.5 471.1 401.7 345.2 267.8 219.9 100.7

1.75V 2516.3 2119.2 1687.4 1140.6 747.8 562.0 461.2 391.8 337.2 257.9 216.5 99.7

1.80V 2446.8 2020.0 1627.9 1114.1 733.9 542.2 446.3 380.9 327.3 251.3 213.2 98.2

1.85V 2225.1 1839.6 1447.6 1013.3 674.4 513.4 429.1 363.0 309.9 243.0 205.0 94.2

1.90V 1963.7 1596.5 1220.9 872.8 585.2 476.1 399.5 339.2 289.6 227.3 190.1 88.3

EosG1200

End voltage


1.60V 3401.8 2849.1 2268.5 1615.4 1042.3 772.1 615.7 510.0 435.5 340.4 277.9 125.3

1.65V 3235.4 2734.1 2145.7 1492.7 956.2 724.6 584.0 492.1 421.7 327.8 271.3 122.9

1.70V 3110.6 2637.1 2092.2 1421.4 928.5 698.8 564.2 481.1 413.4 320.7 263.3 120.6

1.75V 3013.5 2538.0 2020.9 1366.0 895.6 673.1 552.3 469.2 403.9 308.8 259.3 119.4

1.80V 2930.3 2419.1 1949.6 1334.3 879.0 649.3 534.5 456.1 392.0 300.9 255.4 117.6

1.85V 2664.8 2203.2 1733.6 1213.5 807.7 614.9 513.9 434.7 371.2 291.0 245.5 112.8

1.90V 2351.8 1911.9 1462.2 1045.3 700.8 570.1 478.5 406.2 346.8 272.2 227.7 105.7

EosG1500

End voltage


1.60V 4239.5 3550.6 2827.2 2013.2 1299.0 962.2 767.3 635.5 542.8 424.3 346.4 156.2

1.65V 4032.1 3407.4 2674.1 1860.2 1191.6 903.0 727.8 613.3 525.5 408.6 338.1 153.2

1.70V 3876.5 3286.4 2607.4 1771.4 1157.1 870.9 703.1 599.5 515.1 399.7 328.1 150.2

1.75V 3755.5 3163.0 2518.5 1702.3 1116.1 838.8 688.3 584.7 503.3 384.9 323.2 148.8

11


1.80V 3651.8 3014.8 2429.6 1662.9 1095.4 809.2 666.1 568.4 488.5 375.0 318.3 146.5

1.85V 3321.0 2745.7 2160.5 1512.4 1006.6 766.3 640.5 541.8 462.6 362.7 305.9 140.6

1.90V 2930.9 2382.7 1822.2 1302.7 873.4 710.5 596.3 506.3 432.2 339.3 283.7 131.7

EosG2000

End voltage


1.60V 5635.6 4719.9 3758.2 2676.2 1726.7 1279.0 1020.0 844.8 721.5 564.0 460.5 207.6

1.65V 5359.9 4529.5 3554.7 2472.8 1584.1 1200.3 967.5 815.3 698.6 543.1 449.4 203.7

1.70V 5153.1 4368.7 3466.1 2354.8 1538.1 1157.7 934.7 796.9 684.8 531.3 436.2 199.7

1.75V 4992.3 4204.6 3347.9 2262.9 1483.7 1115.1 915.0 777.3 669.0 511.6 429.6 197.8

1.80V 4854.4 4007.6 3229.7 2210.5 1456.1 1075.7 885.5 755.6 649.4 498.5 423.1 194.8

1.85V 4414.6 3649.9 2872.0 2010.4 1338.1 1018.6 851.4 720.2 614.9 482.1 406.7 186.9

1.90V 3896.0 3167.4 2422.3 1731.6 1161.0 944.5 792.7 673.0 574.6 451.0 377.2 175.1

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3. Choose Battery Please select batteries’ capacity according to Fig. 2-3 Selection Curve of Cell Type. 1) First confirm the discharge current and end voltage. E.g., required end voltage is 1.80V/cell. 2) Confirm the continual working time and discharge current. E.g., the continual working time is 3 hours, and the discharge current is 125A .You

should choose the minimum capacity is EosG500Ah 3) Confirm the environmental When the ambient temperature is 25, you should choose EosG500.Or you should

confirm the temperature coefficient according to the Fig.3-1. If the temperature is below 0, there leaves 85% capacity compared with that at 25.Then you should divide by 0.85.

4) To ensure the life of the battery, please don not discharge the depth of battery too much. You'd better control the DOD below the 80%, especially in the power shortage areas.

1000

100

10EosG260

2h 10h

EosG2000

EosG1500

EosG1000

EosG800

EosG600EosG500

EosG400

EosG300

EosG200

Discharge time

3500

2000

500

50

300

200

30

20

5

1.5h1h 24h12h5h20min10min5min

Discharge current(A)

Fig. 2-3 Selection Curve of Cell Type（end voltage per cell 1.80V）


4. 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 internal resistance is the lowest when battery is fully charged. The table 2-3 shows the internal resistance and short circuit current of Narada battery in fully charged state according to the IEC60896 standard. Pay attention to the battery to short-circuit causes the battery voltage to reduce to 0V, and will cause the battery internal component damage.

Table2-3 Internal resistance and short circuit current (25)

type Internal Resistance

（mΩ）

Short Circuit Current

（A）

EosG200 0.66 3098

EosG300 0.48 4025

EosG400 0.34 5231

EosG500 0.33 6083

EosG600 0.28 7196

EosG800 0.22 9024

EosG1000 0.18 10712

EosG1200 0.17 12068

EosG1500 0.15 14002

EosG2000 0.11 17325

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Chapter Three Operation and Maintenance

1. Parameters The EosG series batteries can be used in -20 ~ 50 env ironment, the recommendation

suitable temperature is 15 ~ 25. Using under the high or low temperature, can reduce the battery life. The next table is taking the 48V system as an example. The switching power supply parameter reference establishment value, different uses electricity the environment battery electric discharge. Because of the frequently power cut in the environment in four kind and above four kinds, the battery discharges frequently punishes at the same time in the sufficient insufficient condition. Therefore needs to enhance the floating voltage and the charging current by causes the battery in the short time the sufficient electricity. The user acts according to the locus the power supply category comparative table 3-1. The solar system parameter establishment is table 3-2.

Table3-1 Switching power supply parameter establishment table

Parameter name Below four kinds supplies

power Four kind and above four

kinds supplies power

Floating Voltage（V） 54 54

Equalization Voltage（V） 56.4 56.4

Charging Current（A） 0.1C10 0.1C10

Limited Current For Charge （A） 0.2C10 0.2C10

High Voltage Warning（V） 57.6 57.6

Low Voltage Warning（V） 46 47

Temperature Compensate Ratio With Floating Voltage（mV/per cell）

-3 -3

Temperature Compensate Ratio With Equalization Voltage（mV/per cell）

-5 -5

High Temperature Warning（） 35 35

LVDS Broke Voltage（V） 44 45

LVDS Recover Voltage（V） 49 50

Equalization Charge Cycle（day） 90 30

Equalization Charge Time（h） 24 24

Condition TO Change Float Charge To Equalization Charge（mA/Ah）

＞50 ＞50

Condition To Stop Equalization Charge（mA/Ah）

＜5 ＜5

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Table3-2 Solar system parameter establishment table

Parameter name recommendation parameter（reference）

The largest depth of discharge of system < 80％

Protection voltage of over discharge 1.95V/cell

The depth of discharge per day 10％－30％

The optimum charge current（A） 0.1C10

The largest charge current（A） 0.25C10

Equalization voltage（25） 2.40V/cell，Condition to equalization charge to

float charge is charge current below 6mA/Ah(or break away controller)

Float voltage 2.25V/cell

Temperature compensate radio with

float charge voltage（mV/cell） -3

Temperature compensate radio with

equalization charge voltage（mV/

cell）

-5

The continues overcast and rainy days a year

The coefficient of capacity & life is 1.25 The factor of over capacity of system The coefficient of capacity in winter

temperature., reference to Fig 3-1

2. Capacity and Influence Factor

The capacity of battery is the capacity that battery can be discharged on the established conditions, expressed as signal C. The usual unit of capacity is ampere-hour, shortened as AH. The capacity can be expressed in Rated Capacity or Actual Capacity. The Rated Capacity of EosG battery please see Table 1-1. The Actual Capacity is the product of the discharge current and the discharge time, the unit is AH. 3. Ambient temperature Vs. Battery Temperature affects capacity of the battery. Fig. 3-1 is the available capacity (10h rate) curve vs. ambient temperature. From Fig. 3-1, if the temperature is too low, the capacity will decrease. For example, the capacity will decrease 20% if temperature decreases form 25 to 0; And too low temperature will cause battery long term insufficient charged, also will cause no discharge and negative plates sulfate. 16


The capacity will increase when temperature rises. For example the capacity will increase 5% if temperature raise 10 . But it will quicken up plates’ corrosion and water loss if temperature

rises, shortens battery’s life.

Fig.3-1 Available Capacity (10h rate) Curve VS. Ambient Temperature

Cap

acity

%

Ambient Temperature（）

Temperature and Floating Voltage, Equalization voltage

The purpose of choosing certain floating voltage is to reach the designed life and rated capacity of the battery. If the floating voltage is higher, then the floating current is also higher; it will accelerate the corruption the grid and shorten the life of the battery. If the floating voltage is lower, the battery can’t be kept in fully charged state, this will crystallize PbSO4, decrease the capacity, and also shorten the life of the battery. At 25, if the floating voltage is 2.25V, In other degree, please adjust according to Table 3-2. Valve regulated sealed lead sealed lead acid battery need to carry the equalizing charge regularly, in order to guarantees the battery normal operation. At 25 ,NARA DA battery’ s Equalization voltage is 2.35V～2.40V. It needs to be changed by ambient temperature, the temperature compensation coefficient is-5mV/ /cell.

Table 3-2 Relationship of ambient temperature and voltage

Ambient Temperature

( )

Float Voltage （V/cell）

Equalization voltage（V/cell）

5 2.31 2.45 10 2.30 2.43 15 2.28 2.40 20 2.27 2.38

17


25 2.25 2.35

30 2.24 2.33

35 2.22 2.30

40 2.21 2.28

Fig.3－2 The Voltage Setting Curve Vs. Ambient Temperature

0 5 10 15 20 25 30 35 40 452.20

2.24

2.28

2.32

2.36

2.40

2.44

Equalization Charge

Floating Charge

Vol

tage（

V ）

Temperature（）

Ambient temperature Vs. Battery Life

The heat disseminates performance of VRLA battery is bad, it’s liable to cause heat run away when heat accumulates. When temperature exceeds 25, the battery life will decrease half per 10 temperature raise.

L25＝LT×2（T－25）/10

Notes：T the actual ambient temperature; LT is designed life at T ambient temperature L25 is designed life at 25 ambient temperature

Ambient temperature elevating, also will accelerate the battery slab lattice corrosion and the battery moisture content loss, thus will greatly reduce the battery the life. So suppose to control the ambient temperature, after the quantity of heat accumulating to the certain degree can damage the battery, seriously will be able to cause hotly loses control. If indoor temperature reaches too high, improves the ambient temperature. The battery spacing cannot to be lower than 10mm, at the same time according to handbook request regulating cell floating and Equalization voltage value.

4. Requirement for Charge Equalization Charge

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The battery needs an equalization charge floating operation over three months, and the voltage of at least two batteries are lower than 2.18V. The method of equalization charge is suggested as follows: Charge with 2.35V/Cell for 24 hours, limiting 0.1C10A～

0.2C10A, when the average voltage raise to Equalization voltage, charge by Equalization voltage for 24hours.

Charge After discharge, the batteries should be charged in time. The method is recommended as Charge with 2.35V/Cell for 24 hours, limiting 0.1C10A～0.2C10A. Whether the batteries are fully charged can be decided according to any one of two standards as follows:

1. See following table, table3-3 is in different discharge, the time need for 0.1C10A and 0.2C10A battery.

2. On condition of constant voltage, the value of charge current hasn’t varied for continuous three hours.

Fig. 3-3 the relationship between DOD and charge time

DOD（％）

Charge

Time(h)

0.1C10A

0.2C10A

5. Storage All lead acid batteries experience self-discharge in open circuit. The result is that the voltage of open circuit is decreased, and the capacity also decreased. During storage please note:

— The self-discharge rate is related with ambient temperature. The self-discharge degree is smaller when the ambient temperature is lower, otherwise is larger. The requirement temperature of Narada EosG batteries’ storage environment is from 0 to 35. The storage place must be clean, ventilated and dry.

— An important parameter in storage is open circuit voltage, which is related with density of the electrolyte. In order to avoid permanent damage to the plate caused by

19


self-discharge, the batteries should be supplementary charged if they have been stored for three months. The equalization charge method should be adopted.

— During storage, if the open circuit voltage is lower than 2.10V/Cell, the batteries should be supplementary charged before use. The equalization charge method should be adopted.

— All batteries, which are ready to store, should be fully charged before storage. It’s suggested record the storage time in the periodic maintenance record and record the time when another necessary supplementary charge should be made.

The quality certificates of EosG batteries record the latest charge time of the batteries, next charge time can be calculated according to this charge time. 6. Maintenance

In order to assure service life, the batteries should be correctly inspected and maintained. The maintenance methods of EosG batteries are recommended as follows:

Monthly Maintenance Implement the under-mentioned inspection every month:

— Keep the battery-room clean. — Measure and record the ambient temperature of the battery-room. — Check each battery’s cleanness; check damage and overheating trace of the terminal,

container and lid. — Measure and record the total voltage and floating current of the battery system.

Quarterly Maintenance — Repeat monthly inspection. Measure and record floating voltage of every on-line battery. If more than two cells’

voltage is less than 2.18V after temperature adjustment, the batteries need to be equalization charged. If the problem still exists after adopting above-mentioned measures, the batteries need yearly maintenance or even three years’ maintenance. If all methods are ineffective, please contact us

Yearly Maintenance — Repeat quarterly maintenance and inspection. — Check whether connectors are loose or not every year.

Make a discharge test to check with exact load every year, discharging 30-40% of rated capacity. Make a capacity test every three years and every year after six years’ operation. If the capacity of the battery decreases to lower than 80% of rated capacity, the battery should be replaced.

Operation and Maintenance Precautions Insufficient Charge

If the floating voltage is not set correctly (too low or not amend according to temperature),

20


the battery system will in an insufficient charge state for a long period of time. When the electricity is out, the battery may not be able to work because the acid is saltilized and the capacity is decreased.

Over Charge Please do not neglect the performance of rectify to transfer floating charge to equalization charge. If the rectify cannot transfer charge modes because of its wrong performance or no adjustment, the battery system is always in an equalization charge state. Thus may cause serious problems for battery, such as water loss, life decrease, heat out of control, deformation, etc.

Too low or too high temperature We have mentioned that too low temperature will affect the capacity of battery. While too high temperature will also cause problems, such as water loss, life decrease, heat out of control, deformation, etc.

Too low end voltage The end voltage is also an important parameter for battery. The battery shall stop discharge when reach a certain voltage (The normal end voltage is 1.8V). If the end voltage is too low, it will be difficult to recharge the battery and decrease the charge efficiency, thus reduce the life of battery.

Long time after discharge If the battery is put aside without charge for a long time (2 hours above) after discharge, it will affect the capacity and life of the battery. Because some large size PbSO4 will create in the negative which are difficult to transfer to active Pb. After-sales Service / Customer Service Hotline P.R. China: Asia: Narada Power Source Co., Ltd. Narada Asia Pacific Pte. Ltd. No. 459 Wensan Road Hangzhou, China 65 Ubi Crescent Hola Centre Tel: +86-571-28827007; 28827008 #08-02 Singapore 408559 Fax: +86-571-85126942 Tel: +65 6848 1191 Email: [email protected] Fax: +65 6749 3498 Email: [email protected]

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mailto:[email protected]

mailto:[email protected]


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 10 22 11 23 12 24 Check by sight Result：

Tester: Date:

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battery narada manual

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