This template is only for <span class="searchmatch">SI</span> <span class="searchmatch">units</span> that are not plurable (siemens and hertz); for plurable <span class="searchmatch">SI</span> <span class="searchmatch">units</span>, use Template:<span class="searchmatch">SI</span>-<span class="searchmatch">unit</span>....
use Template:<span class="searchmatch">SI</span>-<span class="searchmatch">unit</span>-abb, Template:<span class="searchmatch">SI</span>-<span class="searchmatch">unit</span>-abb2, or Template:<span class="searchmatch">SI</span>-<span class="searchmatch">unit</span>-<span class="searchmatch">abbnp</span>. The following documentation is located at Template:<span class="searchmatch">SI</span>-<span class="searchmatch">unit</span>/documentation...
Template:SI-unit-2. For abbreviations, use Template:<span class="searchmatch">SI</span>-<span class="searchmatch">unit</span>-<span class="searchmatch">abbnp</span>. The following documentation is located at Template:<span class="searchmatch">SI</span>-<span class="searchmatch">unit</span>-np/documentation. [edit] Useful links:...