Hi there! I want to make sure I understand your issue clearly. Are you experiencing battery problems when using the Too Good To Go app on your Kindle device? Also, you mentioned something about data not saving properly. Could you please clarify what you mean by "not save like and comma"? Are you referring to saving orders, preferences, or something else in the app?

Knowing this will help me guide you better. Meanwhile, generally for battery issues with apps on Android 5.1.1 devices like your Kindle, a few common tips include:

1. Closing the app completely after use to prevent background battery drain.
2. Checking app permissions to ensure it’s not running unnecessary background tasks.
3. Reducing screen brightness or using battery saver modes.
4. Clearing the app cache to fix any corrupted temporary data.

Let me know more details about the problem you face with the app saving data or battery, and we’ll take it step-by-step from there!