The current cost of the SKIL 4Ah Battery and Charger kit on Amazon is $72, so for this deal, you are essentially getting a free 20v angle grinder with the purchase of a battery and charger. In fact, this pricing strategy seems to be trending this week.

We previously spotted the Lowes deal, for the Buy 1 Get 1 Bosch battery and charger. Are more retailers getting in on the buy a batter, get a tool free bundles?

We suspect it might be because of the cost of Lithium going down dramatically, which will help manufacturers and retailers get significant margins out of batteries. There's another strategy at play here, as you can imagine, which is to get more customers to buy into a battery line to improve long-term retention.