Rabbit Battery is a uncommon Artifact Creature — Equipment Rabbit card from The List (PLST), collector number NEO-157. Current market price: $0.19, TCGplayer market prices via Scryfall.
Haste Equipped creature gets +1/+1 and has haste. Reconfigure {R} ({R}: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)