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25
20 Hr
rating 60 70 85 86 90 95 105 108 112 120 130 150 170 180 208 210 216 221 225
Reserve
Minutes
60 1.41
90 1.22 1.32 1.46 1.47
120 1.09 1.17 1.30 1.31 1.34 1.39 1.48 1.50
130 1.05 1.13 1.25 1.26 1.30 1.34 1.42 1.45 1.49
150 1.06 1.17 1.18 1.21 1.25 1.33 1.36 1.39 1.46
160 1.02 1.14 1.14 1.18 1.21 1.29 1.31 1.35 1.41 1.50
180 1.07 1.08 1.11 1.14 1.22 1.24 1.27 1.33 1.41
190 1.04 1.05 1.07 1.11 1.18 1.20 1.23 1.29 1.37
210 1.02 1.05 1.12 1.14 1.17 1.22 1.29 1.45
230 1.06 1.08 1.10 1.16 1.23 1.37
240 1.03 1.05 1.08 1.13 1.19 1.34 1.49
270 1.05 1.11 1.24 1.38 1.46
300 1.03 1.15 1.29 1.36
330 1.07 1.20 1.26 1.47 1.49
350 1.02 1.14 1.21 1.40 1.42 1.47
360 1.12 1.18 1.37 1.39 1.43 1.47
375 1.08 1.14 1.33 1.34 1.39 1.42 1.46
390 1.04 1.10 1.28 1.30 1.34 1.38 1.41
395 1.03 1.09 1.27 1.28 1.32 1.36 1.39
420 1.20 1.21 1.25 1.29 1.31
450 1.12 1.13 1.17 1.20 1.23
TABLE OF PEUKERT'S EXPONENT FOR VARIOUS BATTERY RATINGS
DIRECTIONS: FIND THE 20-HOUR RATING OF YOUR BATTERY ON THE HORIZONTAL AXIS. FIND THE RESERVE
CAPACITY RATING ON THE VERTICAL AXIS. THE INTERSECTION IN THE TABLE GIVES THE "
N" VALUE.