Black and decker weed eater charger flashing red. I have 2 black decker 20 volt matrix batteries. Weed wacker or yard trimmer blower operate with these batteries. When it blinks red what does that mean. Using a rechargeable black decker weed eater represents a far greener approach to going after weeds that sprout in your flower beds sidewalk and driveway than its gas powered cousin. Another just shows bad battery on the charger when i plug it in. I have spare charger so i plugged the battery into that one and it was blinking green which means it is charging. Is the charger bad. Answer 5 years. The hedge trimmer won t last too long with a 1 5 ah battery.
