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26
The following table contains values for the exponent
"n"
for various batteries and
manufacturers. They are calculated from the 20-hour rating and the Reserve Minutes @
25 A as supplied by the manufacturer. Page 27 shows how the calculation is performed.
You may choose a battery of similar size and construction as a guide in selecting
"n"
if
your battery does not appear in this table, or you may calculate
"n"
as shown.
Typical Values for Peukert's Exponent
"n"
Prevailer & SeaGel Batteries
Model
Volts
Res. Min.
20-Hr. Rating
"n"
8GGC
6
375
180
1.14
8GU1
12
140
43
1.20
8GU24
12
130
70
1.13
8GU27
12
167
86
1.12
8GU30H
12
188
95
1.12
84D
12
388
180
1.11
8G8D
12
500
225
1.10
Trojan Batteries
Model
Volts
Res. Min.
20-Hr. Rating
"n"
T-105
6
447
225
1.24
T-125
6
488
235
1.19
T-145
6
530
244
1.14
J250
6
535
250
1.17
J305
6
660
305
1.21
L16
6
760
350
1.28
24TM
12
135
85
1.23
27TM
12
160
105
1.28
30XHS
12
225
130
1.24
SCS225
12
225
130
1.24
EV8D
12
450
216
1.17
TYPICAL PEUKERT'S EXPONENTS