In the More Electric Aircraft (MEA), many subsystems that previously used hydraulic, mechanical, and pneumatic power have been fully or partially replaced with electrical systems. Particularly, this article discusses the feasibility of an equipment intended for the electric taxiing application. Namely a 35 kW DC-DC converter with 2500 Wh storage unit targets the recovery of energy from aircraft electrical brake and restitution on the network. First, the main technical and electrical characteristics of the converter prototype are described. The design of the battery pack is detailed. A 35 kW interleaving multilevel converter appears to be a good candidate to fit with the aeronautic constraints. The total mass of such equipment is 68 kg while volume is 72 L.