Narada 12NDT26 - Page 19

Operation manual for Acme series V4.2
- 19 -
13.5V/block, temperature compensate factor is -18mV/°C /block.
Floating calculating formula under different temperature is:
V
T
=13.5-(T-25)×0.003×6
V
T
—Floating voltage under T temperature
Table 3-2 gives floating voltage under different temperature
Ambient
temperature(°C )
Floating voltage
(V/cell)
Floating voltage
(V/block)
≤5
2.31
13.86
10
2.295
13.77
15
2.28
13.68
20
2.265
13.59
25
2.25
13.50
30
2.235
13.41
35
2.22
13.32
≥40
2.205
13.23
Note: If ambient temperature below 5°C or above 40°C , temperature compensate is no
longer go on.
3.3 Equalization Charge
VRLA battery need Equalization Charge regularly to ensure the battery operating
normally, under 25°C condition，Narada Acme series battery each block equalization
voltage is 14.1V/block. The same, equalization voltage need to adjusted according to
the ambient temperature, temperature compensate factor is -30mV/°C /block,
Equalization voltage calculating formula under different temperature is:
V
T
=14.1-(T-25)×0.005×6
V
T
—equalization voltage under T temperature
Table 3-3 gives Equalization voltage under different temperature
Ambient
temperature(°C )
Equalization voltage
(V/cell)
Equalization voltage
(V/block)
≤5
2.45
14.7
10
2.425
14.55
15
2.40
14.4
20
2.375
14.25
25
2.35
13.95
30
2.325
14.25