Question about what to call an object.

[Mindfire]

You could call it a reliquary.

 

[Steerpike]

Accumulator.

 

[studentofrhythm]

Gem? Jewel?

Consider how our gadgets and devices have been named: (tele)phone, tv, vaccuum (cleaner), battery (formerly dry cell), CD, tape (cassette), etc.

I like the idea of naming it after the inventor, like how Brits call vaccuum cleaners Hoovers.