We have found that our Small battery powering one device will last approximately 6-8 hours. This may vary depending on how many taps a device receives and if it is being used in colder temperatures.
The lights indicate the following:
1. When charging the led shows a red light flash, after a full charge the red light goes solid
2. The discharge of the battery shows a blue light (solid) and a blue light (flashing) when the battery is low.
After it's discharged fully, there will be no light on it.