1. to restore energy, vitality, or enthusiasm to someone or something; to give new energy or motivation
The motivational speech helped reenergize the team after their loss.
O discurso motivacional ajudou a reenergizar a equipe após sua derrota.
2. to recharge or restore power to a device or system
We need to reenergize the solar panels to restore power to the building.
Precisamos reenergizar os painéis solares para restaurar a energia do prédio.