Narada Power Source Co., Ltd.
Eos operation manual V5.3
20
Table 3-4 Relationship of ambient temperature and voltage
Ambient Temperature
(
℃
)
Float Voltage
（
V/cell
）
5
2.31
10
2.30
15
2.28
20
2.27
25
2.25
30
2.24
35
2.22
40
2.21
Fig. 3
－
2 The Voltage Setting Curve Vs. Ambient Temperature
1.2
Ambient temperature vs. Battery Life
The high temperature will damage the battery, reduce the battery life. When
temperature exceeds 25
℃
, the battery life will decrease half per 10
℃
temperature
raise. For example, the design life of battery is 10 years at 25
℃
, if the battery is
operate at 35
℃
for long term, the life will be 5 years. Below is the formula:
L
25
＝
L
T
×2
（
T
－
25
）
/10
Notes
：
T the actual ambient temperature;
L
T
is designed life at T ambient temperature
L
25
is designed life at 25
℃
ambient temperature
Ambient temperature elevating, also will accelerate the battery grids corrosion and the
battery water loss, thus will greatly reduce the battery life. So it is important to control
the ambient temperature. When heat is accumulated to a certain degree, it will damage
the battery, seriously will lead to thermal run away. If indoor temperature reaches too
high, please improve the ambient temperature by making room ventilated, etc. The
battery spacing cannot to be less than 10mm, at the same time regulating cell floating
and equalization voltage value according to handbook’s request.