Power tool batteries have many different voltages, usually ranging from 12V to 60V, or even higher. Higher voltage batteries maintain more power for heavy-duty work lower voltage batteries are lighter and designed for smaller, lighter machines. . Battery voltage plays a large role in how well your tool performs, but what exactly is voltage, and how is it calculated? A battery's voltage is determined by its cell count. Typically, each lithium-ion cell has a nominal voltage of 3. For example: Although these voltage designations are. . Look at all available voltage ranges, covered later in this guide, to determine if 12 volt tools will work for you, or if you will benefit from the added power or versatility of 18 volts. If possible, visit The Home Depot to see and hold the tools. Firsthand experience will help determine what is. . This article systematically introduces the impact of power tool battery type (Li‑ion, NiCd, NiMH), voltage (12V, 18V, 20V and above), compatibility and capacity on tool performance and battery life, and helps you make a wise choice based on your own needs through comparison and FAQs. The difference between these terminals is measured in voltage. A higher. . The most reliable and direct way to determine a power tool's required voltage is by inspecting the physical tool itself for the manufacturer's identification label. This small decal, often referred to as the nameplate, is typically located in an area that is protected but easily visible, such as. . Amp-Hours (Ah) refer to the capacity of a battery and measure how much charge it can store. It is expressed as the amount of current a battery can provide over a set period, usually one hour. For example, a 2Ah battery can supply 2 amps for one hour or 1 amp for two hours. This measurement helps. .