These workarounds are necessary because the battery packs, in fact, are interchangeable only with modifications. But, there are almost always workarounds, and we woodworking enthusiasts have come up with some of our own in our shops – jigs for this and that, etc. Now that we know a little bit more about power tool batteries and battery packs let’s tackle the main question and give you the answer.Īs we said, each manufacturer makes battery packs to fit their own power tool lines, but not for other manufacturers’ power tools. They use a push-in style fitting that is completely interchangeable among all of their power tools. Ryobi also keeps things simple with their tools and battery packs – all of its 18V tools under its One+ line use the same battery pack. Ryobi power tools use the Ryobi One+ battery pack. We also are not going to discuss charge times or charge holding times among the various battery packs. It’s a label thing and a marketing tool.įor the purpose of this piece, we are addressing only the 18V and 20V Max battery packs and not a 40V pack. DEWALT chooses to use their battery’s maximum voltage rating, while the rest choose to use the nominal voltage rating. That latter math is easy: 5 (cells) x 4V = 20V maximum. Maximum: the maximum voltage capacity of a cell.Įach cell has a nominal voltage of 3.6V and a maximum voltage of a little over 4V. Nominal: the amount of voltage when a cell begins to discharge But, then you must consider both the nominal and the maximum voltage ratings: Manufacturers in the US, including Ryobi, all run on an 18V battery platform DEWALT runs on their 20V Max systems.Īll of these batteries have 5 cells, each 3.6V, wired in a series, both the 18V and 20V Max. But what about the DEWALT 20V Max battery pack? Well, that’s an interesting question.Īs we told you, battery packs have the battery cells inside them in some configuration and number. The majority of power tools run on an 18V battery pack. Batteries communicate with the motors of the power tools they are affixed to, and the whole relationship between the battery pack and motor produces an efficient and effective tool. The various manufacturers then build battery packs for their tools that are designed to fit well with them. These cells are combined in batteries with voltage ratings of between 3.6 volts up to 48 volts. Lithium-ion batteries are rechargeable and are comprised of cells with voltage ratings of 1.2 volts, 1.5 volts, or 3.6 volts. The batteries we are talking about are lithium-ion batteries, a recent technology that has virtually replaced the nickel-cadmium battery technology that powered so many tools previously.
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