Peukert's Exponent

Typical Values for Peukert's Exponent "n"

This 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. They should be considered only a guide for selecting "n."

 

Prevailer & SeaGel Batteries
Model VoltsRes. Min. 20-Hr. rating "n"

8GGC

6

375

180

1.14

8GU1

12

43

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

1.27

 

SCS225

12

225

130

1.27

 

EV8D

12

450

216

1.17

 

 

Peukert's

Equation

41