Tool Beeping or Flashing? Troubleshooter
Tools warn you for a reason. Here is how to read them.
Warnings differ between brands. Check the manual. Work through one question at a time. You can go back or start over whenever you like.
Your answers so far
Safety: this troubleshooter is general information. Follow your battery and tool maker's instructions. Don't open a pack or a mains-powered charger, bypass a protection board or force-charge a rejected pack.