If you Streamlight rechargeable flashlight battery is not charging or not holding a charge so the flashlight is weak or not working, it may be time to change the battery with a replacement rechargeable battery. If the Streamlight battery is too expensive, you can get a cheaper alternative that works well.
Get a quality after market battery here:
Battery is compatible with the following flashlights:
Streamlight Mini Stinger
Streamlight 15X1701
Streamlight 20170, 201701, 20175
Streamlight 20X1701
Streamlight 25170
Streamlight 26010, 26060, 26120
Streamlight 9032
Streamlight SL20
Streamlight SL20S
Streamlight SL20X, SL20X W/AC, SL20X W/DC, SL20XP LED W
Steamlight SL-20XP-LED
Get a quality after market battery here: https://amzn.to/3TtOQFn