Artifact ID: a humble Power Cell

This isn’t a proper ‘artifact ID’ post, in that I’m not identifying a real-world object that was used to create an on-screen artifact; this one is more concerned with identifying a briefly-glimpsed on-screen artifact using secondary resources. (Although I’m totally open to suggestions from someone more knowledgeable. The knob on top looks like it’s from a potentiometer I used to have, except cast in clear plastic.)

About the time I was reading about supposed Rebels wielding gaffi sticks, I came upon a now-obsolete gallery of GFFA gear, supplied by Wizards of the Coast for one of their RPGs. One of the items, here labeled as ‘Energy cell’, caught my eye…there was something familiar about it.
Unlike other tertiary sources in RPG materials, the photo is clearly copyrighted LFL (LucasFilm Limited), as are a number of images that date to this same period (such as that of the credit chip), so I was pretty confident this wasn’t something that was whipped up by DK to pad out a Visual Dictionary…this had to be an actual prop from a film.
That’s when I remembered! Ah-ha! I’d seen just such an item many times before, while playing the Episode I Podracer game for countless hours!

The WotC page and the Racer game were both from the Episode I era, so I next carefully scanned my Episode I Visual Dictionary, and sure enough, there it was on page 46 (52 in the Complete VisDict), where it is labeled as ‘Podracer Power Cell’. It appears that this is what the Single Power Cell as shown in Racer is intended to represent. With that identification in mind, I went back and rewatched the podracing scenes of Episode I. I’m now about 85% sure that the prop above is what Qui-Gon hands Anakin (“Here, try this power cell.” “Yes, sir!”) before they test his podracer (“It’s working!”); in which case, it’s much larger than expected—4 or 5 inches tall?
Here are some 4k screenshots where we can see the size:

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