Hello,
After 7 months of rarely using this flashlight, the light indicator became red, so I decided to charge it with the built-in charger…
After almost 2.5 hours of charge it was still flashing red, and became hot with a smell, so I removed the 5V 2A adapter and tried it, it works when turned on but still red indicator !!
So I’ve continued charging the Sofirn battery that came with it with Westinghouse WBC-011 charger until fully charged.
Inserted the battery and it worked normally, with green indicator. After one day tried again and it was dead !!! 
The light was always getting hot on medium and high modes.
Unfortunately 
, that was a great flashlight, although was not using it as much as my Sofirn SP10 V3 .
Has anyone seen any similar problems?