A:Answer Thanks for the review. The battery of our JBL Flip 5 will not overcharge. There is no harm in leaving your portable speaker connected to electricity at all times. You can simply pick it up, unplug it from the charger and be on your way, knowing that you have a full charge. However, if you’d like to conserve electrical energy, disconnect from charging. Let us know if you have other questions in the future using this link: https://support.jbl.com/us/en/customer-service/contact.html