This is the rechargeable NiMH battery pack for legacy system FITLIGHTS®. Each FITLIGHT®* contains one battery pack.  Each battery pack is 1000 mAh. Follow this video for instructions. Batteries should be replaced every 2-3 years, depending on use. 

*NOTE: These batteries are for serial numbers that begin with 15-23. These batteries are for NON-WIFI lights only. Not to be used to replace the battery of WiFi lights.

Specs:
1.75” W x 1.25” H x.375” D