Battery Datasheet

Narada’s REX battery is designed
for Renewable Energy Sources such as
Solar and Wind Power. REX protects
ou r en v iro nme n t us i ng G re e n
Technology and benefits the World’s
Urban and Rural Population by
Generating Power Economically from
a Clean Source of Energy. REX is a
product developed by Narada’s R&D
with an “ eXtra” in Performance
and Life Span.
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Long life design for both cyclic and float applications
Superb security and reliability
Robust design inside and out
Excellent deep discharge recovery fast recharge performance
Extra long back-up times
More cost effective than nearest equivalent
Features & Benefits
Nominal voltage 2 V
Number of cells 1
Rated capacity(25℃) 400 Ah - 40A for 10h to 1.80V/cell
480 Ah - 4A for 120h to 1.85V/cell
Internal resistance 0.30 mΩ (acc. to IEC 60896-21)
Short circuit current 6107 A (acc. to IEC60896-21 )
Self discharge(25℃) less than 2% per month
Design life at 20℃ 20 years
Mechanical data
Weight ready for use 32 kg (70.5 lbs)
Length 227 mm (8.94 in)
Width 170 mm (6.69 in)
Height of monobloc 291 mm (11.46 in)
Total height 303 mm (11.93 in)
Terminal M8 female
Terminal hardware torque 10 - 12 Nm
Renewable Energy Storage Batteries
Electrical data
Standards
Test standards
IEC60896-21/-22, IEC61427, YD/T 799 etc.
Safety standard, ventilation
EN 50272-2
Manufactured under system
ISO9001/TL9000 & ISO14001 by Narada
Copyright Narada Power Source Co.,Ltd. www.naradabattery.com
stored energy solutions for a
demanding world
Constant Current Discharge Data Units: Amperes (25 ,77 )℃ ℉
Constant Power Discharge Data Units: Watts per cell (25 ,77 )℃ ℉
stored energy solutions for a
demanding world
Technical specifications
400
15 30 1 3 5 8 10 12 20 24 48 72 120
1.70V 489 365 237 107 74.3 51.2 42.8 36.3 22.1 19.0 9.85 6.74 4.28
1.75V 463 339 226 104 72.2 50.6 42.1 35.7 22.0 18.8 9.71 6.64 4.21
1.80V 436 317 212 101 70.5 49.6 41.2 34.8 21.5 18.5 9.49 6.49 4.12
1.83V 410 302 198 97.5 68.9 48.7 40.3 34.3 21.1 18.1 9.29 6.35 4.03
1.85V 387 283 191 95.6 68.2 48.2 40.1 34.0 20.9 17.9 9.23 6.32 4.01
1.90V 327 243 170 89.7 65.6 46.3 38.7 33.1 20.4 17.5 8.92 6.10 3.87
End
Voltage
Time (minutes) Time (hours)
15 30 1 2 3 4 5 6 7 8 10 12 24
1.70V 881 699 475 310 222 179 153 131 115 101.9 83.6 76.1 38.7
1.75V 848 675 457 299 214 175 149 128 112 98.1 82.4 75.0 38.1
1.80V 808 651 446 294 206 170 145 125 108 95.6 81.1 73.8 37.5
1.83V 771 614 430 282 201 167 142 121 106 93.7 79.6 72.4 36.8
1.85V 736 579 406 270 195 163 138 118 103 92.4 78.0 71.0 36.1
1.90V 639 489 350 234 181 152 129 110 97.7 86.5 72.3 65.9 33.4
End
Voltage
Time (minutes) Time (hours)