If the battery on a Travelcube is completely "dead", how long will it take to be recharged? September 30, 2020 14:39 Updated If the battery is fully depleted, the Travelcube will require between 3 1/2 to 4 hours to reach full charge. Related articles How long will the battery last on the Travel Mini Sound Machine? How long does the Travel Mini battery take to fully recharge? How do I charge my Hushh, Rohm, or Go? What do the flashing LED lights on the Travelcube sound machine mean? My Hushh sound machine won't shut off. Help!