Finally got my batmobil out of storage and on display. Bought it years ago, but didn't have the space to set it up. Also bought Thethercells years ago, especially for the batmobil. Unfortunately, it doesn't work good for me. The app always tells me that my batteries are half full, even when I put it fresh, full batteries. I can turn the lights on my Batmobil on and off all right, but they wont stay lit. Sometimes they go out after 10 minutes, sometimes after 2 minutes... they never stay on. The app crashes frequently too.
I think manufacturer stopped supporting the app years ago, you can't even find it in Apples app store anymore. It was a good initiative, pity it's dead now. The cells where quite expensive when I bought them.