The lid really helps to extend the battery life. I would run through a full battery charge on a cool morning out on the porch. With the lid, I can go three cups before needing to charge.
This is a must have. It should have been offered as an option when I first purchased the mug as a gift for my wife. I discovered it later in an email notification.
Lid - great addition to the ember line. We purchased 2 of them and they work great. We also love how you can customize them so you know which lid is your. Planning to buy more soon.
I have been waiting for this to come out! I love my cup and taking it glamping is #1 on those chilly days/nights. This helps tremendously for warmth and splash. Happy Customer here! -Marlene