Vladi from Canoga Park Ca writes
When the battery on the Chapin Backpack Sprayer 4 Gal. 20V Lithium Black & Decker Batter blinks red, this means that it has gone bad and needs to be replaced. We do carry the Replacement 20V Battery for Chapin 4 Gallon Backpack Sprayer.
Answer last updated on: 08/31/2017