How to Choose a Cordless Battery Platform
The single most consequential decision in building a cordless tool kit isn't which drill to buy — it's which battery platform you commit to, since every future tool purchase will be shaped by that choice.
Why platform matters more than any one tool
Batteries and chargers are usually the most expensive part of a cordless kit, so once you own a few, it's much cheaper to keep buying bare tools on that platform than to switch brands.
Combo kits exist because manufacturers know this — they bundle two or more tools with batteries and a charger at a lower effective per-tool price than buying separately.
Comparing the major platforms
DeWalt's 20V MAX lineup is one of the largest and most widely available, with strong support at home centers.
Milwaukee's M18 platform leans toward higher-end, pro-grade performance and has the deepest specialty tool selection, particularly for trades.
Makita's 18V LXT line is known for compact, well-balanced tools and strong battery longevity.
Ryobi's ONE+ platform is the best value for occasional homeowner use and covers an enormous range of tools, including outdoor equipment.
Bosch's 18V lineup is smaller than the others but well-regarded for build quality, particularly in drills and impact drivers.
What to look for in a combo kit
Check which two batteries are included and their amp-hour rating — some kits pair a smaller and a larger battery, which is a reasonable trade-off for cost.
Make sure the specific tools included (drill, impact driver, circular saw, etc.) match what you'll actually use; an extra tool you won't touch isn't a bargain.
Frequently Asked Questions
- Can I mix batteries between brands?
- No, battery platforms are brand- and often voltage-line-specific (for example, DeWalt 20V MAX and Milwaukee M18 batteries aren't interchangeable). Some brands sell adapters, but they're a workaround, not a long-term solution.
- Is it worth switching platforms for one better tool?
- Usually not, unless that tool is central to your work. The cost of re-buying batteries and a charger typically outweighs the benefit of one standout tool on a different platform.