How to change the battery pack in the FITLIGHTS® (non WiFi lights only)

Note: These instructions apply to non-WiFi lights only.  Do not attempt to change the battery of the WiFi light.  

You can replace the battery pack of FITLIGHT® by following the video below. 

Batteries need to be replaced every 2-3 years, depending on use.  You can purchase battery packs directly here: Battery pack

For uniformity purposes, all of the battery packs should be replaced simultaneously.