Kobalt 40V Battery Not Charging (Flashing Red)

What to do when the kobalt 40v battery is not charging and flashing red and green This light means the battery is defective but you can jumpstart it to fix the issue Use a pair of jumper cable to connect the positive terminal to positive terminal and negative terminal to negative Wait for around 15 seconds then disconnect Now put the kobalt 40V battery back to charger to charge again Blinking green means it is charging fine now