Calculation example using the 5h and the 20h rating
The C5 rating is 75Ah. The t1 rating is 5h and I1 is calculated:
The C20 rating is 100Ah. The t2 rating is 20h and I2 is calculated:
The Peukert exponent is:
A Peukert calculator is available at
http://www.victronenergy.com/support-and-
Please note that the Peukert exponent is no more than a rough approximation of reality, and that at very high currents, batteries
will give even less capacity than predicted from a fixed exponent. We recommend not to change the default value in the battery
monitor, except in case of lithium batteries.
Manual - SmartShunt
Page 27
Battery capacity and Peukert exponent
