[DeWalt and Porter Cable 20v MAX batteries interchangeable?]

Hey there,

First post, and I'm looking for a little info I can't find anywhere.

I recently purchased the Porter Cable 20v MAX drill/impact combo.

The two batteries it came with have been more than enough so far, but I cannot find PC 20v batteries anywhere. DeWalt batteries are everywhere.

Does anyone know if DeWalt 20v MAX batteries will fit PC tools?

I would also like to buy some DeWalt 20v MAX tools, but not if the batteries don't swap.

Thanks,

Jacob