The Eos range of VRLA batteries uses AGM technology and is built to the IEC 60896-21/22 standard. It gives 100% capacity out of the box, can handle deep discharges, and has a design life of more than 15 years with a cycle life of more than 1200 cycles to 80% depth of discharge. Flexible connectors and several optional racking systems allow many ways of installing it. The Eos-2000 is a single 2 V cell of 2000 Ah at the 10-hour rate, for fixed and mobile telecoms, UPS, utilities and solar.
Capacity at different rates
The capacity of the Eos-2000 at 25 °C depends on the discharge rate.
| Rate | Discharge current | End voltage per cell | Capacity |
|---|---|---|---|
| 10 hour | 200 A | 1.80 V | 2000 Ah |
| 3 hour | 500 A | 1.80 V | 1500 Ah |
| 1 hour | 1100 A | 1.75 V | 1100 Ah |
Constant current discharge
Discharge current in amperes to the end voltage shown, at 25 °C (77 °F).
| End voltage per cell | 5 min | 15 min | 30 min | 45 min | 1 h | 2 h | 3 h | 4 h | 5 h | 6 h | 8 h | 10 h | 12 h | 24 h |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1.60 V | 2896 | 2437 | 1980 | 1560 | 1305 | 802 | 589 | 463 | 385 | 332 | 260 | 215 | 183 | 99.7 |
| 1.65 V | 2715 | 2293 | 1806 | 1447 | 1232 | 779 | 573 | 456 | 380 | 328 | 257 | 214 | 182 | 98.2 |
| 1.70 V | 2552 | 2170 | 1651 | 1356 | 1170 | 752 | 547 | 441 | 371 | 320 | 254 | 210 | 180 | 97.8 |
| 1.75 V | 2407 | 2043 | 1523 | 1279 | 1105 | 725 | 535 | 431 | 364 | 315 | 250 | 209 | 179 | 96.9 |
| 1.80 V | 2274 | 1905 | 1426 | 1207 | 1049 | 703 | 523 | 424 | 356 | 309 | 246 | 206 | 177 | 94.9 |
| 1.83 V | 2106 | 1754 | 1331 | 1142 | 990 | 673 | 507 | 412 | 350 | 305 | 244 | 205 | 176 | 94.9 |
| 1.85 V | 1953 | 1620 | 1253 | 1063 | 927 | 634 | 479 | 392 | 334 | 292 | 236 | 198 | 169 | 92.2 |
| 1.90 V | 1599 | 1279 | 1041 | 888 | 766 | 530 | 428 | 356 | 302 | 265 | 214 | 180 | 156 | 86.0 |
| 1.94 V | 1440 | 1163 | 956 | 805 | 689 | 473 | 367 | 309 | 266 | 234 | 192 | 163 | 140 | 76.6 |
Constant power discharge
Discharge power in watts per cell to the end voltage shown, at 25 °C (77 °F).
| End voltage per cell | 5 min | 15 min | 30 min | 45 min | 1 h | 2 h | 3 h | 4 h | 5 h | 6 h | 8 h | 10 h | 12 h | 24 h |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1.60 V | 4923 | 4142 | 3423 | 2899 | 2497 | 1588 | 1178 | 950 | 802 | 705 | 574 | 475 | 400 | 214 |
| 1.65 V | 4752 | 4013 | 3291 | 2777 | 2418 | 1522 | 1148 | 931 | 782 | 689 | 561 | 463 | 390 | 208 |
| 1.70 V | 4594 | 3907 | 3183 | 2679 | 2327 | 1462 | 1125 | 907 | 766 | 673 | 552 | 459 | 387 | 207 |
| 1.75 V | 4406 | 3738 | 2992 | 2512 | 2194 | 1398 | 1103 | 891 | 752 | 653 | 541 | 455 | 383 | 205 |
| 1.80 V | 4208 | 3524 | 2797 | 2341 | 2020 | 1346 | 1069 | 877 | 733 | 640 | 529 | 447 | 377 | 201 |
| 1.83 V | 3960 | 3297 | 2614 | 2182 | 1889 | 1297 | 1045 | 853 | 713 | 622 | 515 | 440 | 370 | 198 |
| 1.85 V | 3710 | 3079 | 2416 | 2000 | 1731 | 1247 | 1010 | 830 | 693 | 604 | 499 | 424 | 357 | 191 |
| 1.90 V | 3119 | 2495 | 1975 | 1640 | 1467 | 1125 | 921 | 768 | 647 | 570 | 467 | 399 | 336 | 179 |
| 1.94 V | 2822 | 2279 | 1745 | 1441 | 1323 | 1036 | 842 | 700 | 590 | 513 | 420 | 359 | 302 | 162 |
Racking (optional)
Narada racks are made of powder-coated steel tubing, are easy to assemble and come complete with sliding cover terminal (take-off) plates. The figures below are for 24 Eos-2000 cells in a 48 V system.
| Cell configuration | Rack width* | Rack depth | Rack height | System weight |
|---|---|---|---|---|
| 2 high, 12 wide | 3195 mm | 562 mm | 880 mm | 3200 kg |
| 4 high, 6 wide | 1640 mm | 562 mm | 1680 mm | 3240 kg |
Source: manufacturer datasheet Eos-2000-04-N-EN (Ver.05, April 2015), Narada Power Source Co., Ltd. Subject to revision without prior notice. The outline dimensions are in the drawing on the datasheet; download it with the button above.





