![]() ![]() No room for a buck converter in there, all there is room for is a marketing sticker to make people think they are getting something more. There is no way anyone is converting 18v up to 20v in that battery pack. I don't have a dewalt 20v but I am certain it shows the same voltage as my makita and bosch 18v batteries. None of those batteries are putting out more than the other. So, depending on which philosophy you want to use when doing battery math, yes they are all the same. Let the marketing team round the numbers up and you have 4.0v x 5 cells = 20volts. These all have a nominal voltage of 3.7volts. I didn't read the article but pretty much all cordless batteries are 18650 or 21700 cells. (DeWalt makes an adapter that allows me to use my new 20V batteries on my 18V DeWalt tools.) The question is if there is a demand big enough for someone to make the adapter. Theoretically, it should be possible to step down your 20V batteries to an 18V system. (That's why we had 18 originally.) When NiMh batteries made their way into tools, manufacturers had different cells to work with. When you stacked those up, you get 6V, 12V, 18V-ish batteries, etc. The 18V tools were made from NiCd batteries, which had cells that were just over 1.5V each. If you are interested in why there are 18V tools and 20V tools, you have to look back at history. Instead, they have added electronics to step down the voltage and have them perform on the tool in a slightly different way. Those batteries are likely made out of the exact same cells and the 18V batteries could probably put out 20V if the manufacturers wanted to. However, the 18V battery will also have a voltage drop below its 18V also. Yes, the 20V battery will have a voltage drop below 20V. ![]() A 20V tool can use that power faster than a 18V tool, but that's it. The power of the cells is 4 Amp-Hours and should be equavalent to the work that the battery packs can do. His conclusion is somewhat correct, but those batteries he is showing are equivalent to the energy/power that they hold. I would ignore it and delete it from the internet, if you can. The person who wrote that article doesn't know what they are talking about.
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