From un- +‎ charged.

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uncharged (not comparable)

1. (physics, chemistry) Not carrying an overall or net electric charge.

   Synonyms: chargeless, neutral

2. (law) Not charged with a criminal act.
3. Not charged for; given away for free.

   Synonym: feeless

   • 1901, Cassier's magazine:

     On inquiring how a charge of 20 per cent, for uncharged labour was obtained, he was told that it was estimated.

4. (heraldry) Without a heraldic charge.

• graunched