When it bottoms out I can bring up some more to refill it, or pick up a mix and match case. Id like to be able to have them in the case and not being charged continuously. ordered 14 fits perfect. Muy muy cómodas, la suela es parecida a la de los suecos Crocs, buen agarre sobre mojado. Good game for kids and anyone one you loves doctor who. I wanted to have a set that wouldnt attract too much attention in public and that could fit nicely under a scarf or hat, and these are just right for those purposes. minimal ear fatigue. Other than that they are ok for home use. This was the second pair I purchased. It is a very good product i think my battery last a little longer than what it says but i stp then have to restart so that could have something to do with it.