The charge-level indicator is a sweet new feature in flowlight FS. Hold the button while the light is off to see how charged the battery in your light is.
For rechargeable batteries:
Green is at least 80% charged, red is at least 80% dead, orange and other in-between shades are approximate and indicate about 50%.
For alkalines:
A “green” reading for disposable batteries may actually mean 50% or less, due to the voltage difference of the chemistry. Red means below 50% charged.
Feel free to contact us if you have questions :)