When my Dyson battery wore out, a $20 adapter solved the problem Dyson's $130 replacement couldn't

When you buy into a power tool ecosystem, you're not just buying the tools — the batteries are the real investment. Once you own a few batteries and chargers, you can quickly swap battery packs between tools to keep them running after one dies. Better yet, you can save money by purchasing tools separately from battery kits, leveraging the battery collection you already own. But what about the tools and household appliances in your home that don't run on Ryobi, DeWalt, or Milwaukee batteries?

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