Old batteries regenerated in part of solar system (8,4)

I believe the answer is:

asteroid belt

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'part of solar system' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'old batteries regenerated' is the wordplay.
'regenerated' indicates anagramming the letters.
'old'+'batteries'='oldbatteries'
'oldbatteries' is an anagram of 'ASTEROID BELT'.

'in' is the link.

Can you help me to learn more?

(Other definitions for asteroid belt that I've seen before include "Zone where many minor planets orbit" , "Region of interplanetary space - battered soil (anag)" , "Region of space between Mars and Jupiter - besotted liar (anag)" .)

I've seen this clue in The Telegraph.

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