DeWalt, Makita & Milwaukee 2-Pack Battery Kits + Select Bonus Power Tools

Yes. This deal is hackable. You can choose to return the battery or the tool for a prorated refund, or you can pick store pickup on the item you don't want at another HD and never pick it. up. That item will get canceled after 7 days and you get your prorated refund on that item.

Prices of some of the tools after battery return:
Router: $78.27
Angle Grinder: $81.84
Jigsaw: $88.38 <— equivalent to half off original price

Ryobi has LOTS of tools & claim their 18v batteries will on MOST of them & they say they don't plan on changing battery size/battery design for years to come (and I tend to believe them).

Ridgid makes great cordless tools. And a bonus in regard to their batteries is that they supposedly warrant the batteries for "life'' (supposedly the only catch is that the batterys must be registered by the owner on their website).

Also, I think (perhaps someone with experience can deny/verify this) the owner must incur the cost of shipping the old/dead batteries to Ridgid. So basically, for jumping through a few hoops (and a handful of $ for shipping) it seems new batteries won't ever need to be purchased.

And in regard to Milwaukee tools, they are seemingly the most expensive... BUT they also seem to have the largest selection of cordless tools.

DeWalt also makes many quality cordless tools & were, if memory serves correctly, were one of the first to offer a cordless drill MANY years ago. They are also pricey (like Milwaukee) but are always a solid purchase.

I could write more buy I'm typing this on a painfully small 4 inch phone screen. : (