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The idea of a re-charging piece is hidden in the Nutty Knights army from
Ralph Betza's Chess with different armies. The charging pieces there have
many forward moves, but very poor retreating moves.

A re-charging piece turns 180 degrees upon reaching the 8th rank, and
another 180 degrees upon reaching the first rank again. A Charging Rook,
e.g., becomes a Reverse Charging Rook, moving forward as a King and
backward and sideward as a Rook and the 8th rank. On promoting a pawn, you
get a re-charged piece with full retreating power and poor forwardness.

I wonder how much this change would power-up the Nutty Knights.

One can also imagine re-charging pawns, walking up and down as pawns with
no hope for promotion ...

For the physical representation, balck and white Shogi-style pieces may
work fine where colour indicates the ownership of the piece and direction
the charged state.