Note: While Porter-Cable is the most common brand for this model, this battery style (CLM18VRB) is also compatible with other brands under the same ownership group, such as certain Black & Decker and older Stanley tools. If you have been in the DIY game for over a decade, you likely own (or used to own) a set of Porter-Cable 18V power tools. For years, the Porter-Cable 18V system was the gold standard for the serious homeowner and the professional apprentice.

But every tool is only as good as its battery. If your old NiCd (Nickel-Cadmium) packs are dying, you’ve probably searched for the model number .

Here is your complete guide to understanding this battery, how to replace it, and whether you should stick with the old tech or upgrade. The CLM18VRB is a 18-Volt Nickel-Cadmium (NiCd) battery pod. It was the standard power cell for the Porter-Cable 18V "Job Boss" series and the 18V "Wood Shop" series.