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 :)