A mysterious battery-powered Google device appears in FCC filings

It’s officially August, which means we’re getting close to the fall hardware season, and two recent FCC filings from Amazon and Google could hint at a couple products the companies may — or may not — reveal.

Google’s product is pretty mysterious; the product is described only as a

It appears to be battery-powered — there’s no AC connection — though it can be powered over a 5V USB connection, and one…