I charged mine for less then 12 hours, and it’s working fine. I just charged until the light turned green. It’s holding the charge just fine and I’ve used it many times during the last few days. I packed it rolled in a towel the very next day and it was pretty handy at my destination that only had one mirror in the bathroom with multiple people trying to get ready for graduation.
* I sure would like a travel case at this price point, especially when the vendor kept pointing out she travels with hers... I suppose I would purchase it separately, if offered, so long as it’s not rediulously expensive. I would love to protect my pricey mirror.