The world would be an easier place if you could use any power tool with any brand's battery, but things aren't that simple.

If you're mixing Makita and DeWalt batteries, you can grab an adapter that converts your 20V DeWalt battery to something that can be used with your Makita 18V tools on Amazon for $15.98.

To use the adapter, all you have to do is plug it into your Ryobi 18V ONE+ tool, and then, slide in the 20V DeWalt battery into the slot. Just like the Ryobi 18V ONE+ battery, you can connect the ...

The $100 DeWalt DCB094 USB Charging Kit lets you add that port to any DeWalt 20V power tool battery in a literal snap. Slide this quarter-pound adapter onto your battery pack, and you get a bi ...

Amazon dropped a massive 61% off deal on this DEWALT oscillating multi-tool kit that has everything you need for those home ...

So let’s talk about something a little bit more exciting: both Ryobi and DeWalt are also releasing snap-on USB-C adapters this spring that not only let you charge their 18V (Ryobi) and 20/60V ...

Because the adapter works with any device that can be charged using a USB cable and also allows the battery to be charged using the adapter, it’s a good deal at $65.87.

Mechanically, this was pretty easy — a dead Ryobi pack from the recycling bin at Home Depot was stripped down for its case, which was glued to a Dewalt 20-v to 18-v battery adapter.