Can Makita Batteries Fit Other Brands' Tools? Compatibility Explained
Every major hardware brand, from Makita to Ryobi to DeWalt, maintains its own exclusive battery pack framework. Every brand's pack has its own proprietary connector and an internal hardware, preventing you from swapping those batteries over brand lines. Every brand wants to keep you in its product ecosystem, of course, and if they let you use someone else's batteries, that'd be one less thing you're buying from them.
This presents a mildly annoying scenario; say, for example, you've got some power tools from a couple of brands, one of which is Makita. You don't have any charged batteries available for your other brands, but your Makita batteries are ready to go. Unfortunately, due to that inherent incompatibility between different brand batteries, there's no way to use those Makita packs with your other tools, at least not natively. If you find this scenario frustrating, you're not the only one, as there's an entire sub-sector of third-party brands making custom adapters for the major brands like Ryobi. Makita is no exception, as there are adapters for its battery packs as well as standalone tools designed to receive them without an adapter. Whether actually using these third-party tools and accessories is a good idea, though, merits careful consideration.
There are third-party tools and adapters that can use Makita batteries
Makita batteries can't be used with other brands' tools as they are, as every brand has their battery packs connect to their tools in different ways. The solution that various third-parties have cooked up is specialized adapters designed to facilitate a simple connection. By plugging a Makita battery pack onto the bottom of these adapters, you can then plug the combined device into a different brand's tool to power it. The big catch here is that these adapters are strictly specialized, as the tops of each need to match the battery connectors of the targeted tool. For example, if you wanted to connect a Makita battery to a Ryobi tool, you would specifically need a Makita-to-Ryobi adapter, which won't work with any other brand combination. If you wanted to connect to a DeWalt tool, for instance, you'd need a separate adapter for that.
In addition to these adapters, some third parties have opted to instead make their own tools with the Makita battery framework in mind. Various third-party power tools and equipment available on Amazon, including power scrubbers, hot glue guns, oscillating tools, and work lights are designed to receive Makita battery packs directly despite not being Makita tools. They don't come bundled with batteries since, obviously, they can't sell Makita products, but if you already have a Makita pack handy, you could use it.
Using third-party tools and accessories presents safety concerns
While these third-party tools and adapters sound very convenient, their use comes with a vital asterisk: because they're not official Makita products, not only can you not verify their safety, but Makita itself won't have anything to do with you if you use them.
As with any hardware brand with a battery ecosystem, Makita's tools are designed to receive power from their batteries in a very specific way. Using an adapter to power a different brand's tool with a Makita battery is a jury-rigged solution; you'll get power transfer, but it might be more or less power than is ideal for that tool's operation. In the worst-case scenario, if the adapter doesn't have proper surge protection, the battery could overload the tool and fry its motor. Or, if you're using a Makita battery with a third-party tool directly, the tool may not connect to the battery properly and end up damaging the battery's connecting points.
Either way, something's going to get damaged, and if that does happen, don't expect sympathy from Makita itself. The brand has a hardline stance on the use of knock-off and third-party products and accessories; any kind of unauthorized use of their batteries will immediately void their warranty. They're not Makita products, so Makita has no obligation to service them. Even if you inadvertently fry your Makita battery with a cheap adapter, Makita won't offer you any kind of assistance or replacement. You can safely assume that this goes for any other branded tools used with an adapted Makita battery as well.