How long does the Travel Mini battery take to fully recharge? September 16, 2020 21:12 If the battery is fully depleted, the Travel Mini will require between 3 1/2 - 4 hours to be fully charged again. Related articles Can I use my portable sound machine while it’s plugged in and charging? What do the flashing LED lights on the Travelcube sound machine mean? My Hushh/Rohm/Travel Mini/Pocket Baby Soother will not turn on/off, and I have already made sure that the child lock is deactivated. How can I fix this? How long will the battery last on the Travel Mini Sound Machine? How do I turn the sound on for my Travel Mini?