Elise Tiberghien (asker) Aug 28, 2011:

More context .... thanks ! General Description:

This tester is used for the examination of the starting ability of 12V batteries, measurement of the 1-20 h capacity or of reserve capacity, and the controlling of 12V generators.
Technical parameters :
Discharging currents: 1A-30A with 1A steps, 30A - 420A with 5A steps
Current stability: better than 2% or + 0.2A
Cut off voltage :
9 V - 13V 2% current accuracy
7,5V - 9V es 13,8V-16V 10% current accuracy 7,5 V - 11,4 V

claude-andrew Aug 28, 2011:

Paliers is a term I often see too.

Tony M Aug 28, 2011:

Context? The correct translation here will almost certainly depend on where these 'steps' actually are? Is this some kind of selector switch, for example?