Page 527 - Battery Reference Book

Standby power batteries 50115

Monobloc'

h h
2 2
ti d
R
T g d
k
Q Q Q
13 21 25 33 11 13 17 23 17 21 23 29 17
144 240 288 384 77 92 123 169 158 197 217 276 192

29 48 58 77 15 18 25 34 32 39 43 55 38
9.5 16 19 26 5 6 8 11 11 13 14 18 13

713 1188 1426 1900 447 534 713 980 830 1034 1139 1449 950
14.5 23.4 27.4 35.4 38.2 45.0 60.0 54.5 52.9 84.8 99.0 57.1 81.0
2.5 4.1 4.8 6.4 6.5 7.6 9.8 11.1 8.8 14.4 16.7 10.0 14.0
2.00 3.23 3.82 5.00 5.10 6.0 7.7 8.7 6.9 11.3 13.1 7.8 11.0

86 135 160 208 170 194 248 160 359 296 305 391 248
159 159 160 160 340 343 343 483 184 343 327 185 343
356 356 356 356 288 288 288 281 325 326 319 326 360
126 175 200 246
200 200 200 200
A B B B
132 206 206 206
17.3 26.8 31.1 39.6

- - - -
345 345 345 345
423 423 423 423
340 340 340 334 378 378 372 378 411

oxygen evolved from the positive plate can diffuse consumption a current limit of 0.1C3 A, e.g. 8 A for
to react at the negative electrode where it is the type 3VBI1, is recommended.
electro-chemically reduced to water. For maximum service life the recommended float
Powersafe is designed specifically for standby power voltage is 2.21V p.c. Where a higher float voltage
applications. Low internal resistance gives super high- is essential this is perfectly acceptable to Powersafe
rate performance and novel design features make Pow- although this can be expected to reduce service life.
ersafe the ideal choice for a wide range of eqnip- Powersafe will accept high currents for fast rechar-
ment including telecoms, unintermptible power sup- ging (with normal voltage safeguards). For example,
plies, emergency lighting, power distribution, engine with constant potential recharge at 2.27V p.c. and
starting and a host of other standby duties. Powersafe 30 A available current, a 3VBII battery would be 75%
has a design life of 10 years. charged in 3 h.
Only constant-potential chargers are recommended Open-circuit losses of Powersafe from the fully
for use with Powersafe, and for efficient power charged condition are generally similar to those for