BATTERY INFORMATION

Temperature and Percentage of rated Battery Life

One thing that is specific to the type of equipment you probably have [Using lead acid batteries] is that the life of the battery is greatly influenced by temperature. Most lead-acid batteries have a life expectancy of 10 years based on an ambient operating and storage temperature of 77 degrees Fahrenheit. If the battery is operated in a 92 degree ambient, its life is cut in half.

The table below give the relationship between Temperature and Percentage of rated Battery Life:

Temp

% Life

Temp

% Life

Temp

% Life

Temp

% Life

Temp

% Life

   

90

54

105

27

120

15

135

4

   

91

52

106

26

121

14

136

4

77

100

92

50

107

25

122

13

137

4

78

96

93

47

108

24

123

12

138

3

79

92

94

45

109

23

124

11

139

3

80

89

95

43

110

22

125

10

140

3

81

85

96

41

111

21

126

9

   

82

81

97

40

112

21

127

9

   

83

77

98

38

113

20

128

8

   

84

73

99

37

114

19

129

7

   

85

69

100

35

115

18

130

6

   

86

66

101

34

116

18

131

6

   

87

63

102

32

117

17

132

5

   

88

60

103

30

118

16

133

5

   

89

57

104

29

119

16

134

4

   

The same data is in graphic form below:

Battery Life | Temperature | Emergency Lighting Equipment Service Comapny

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Saturday, May 27, 2006

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