Battery charging light blinking red

I purchased a new battery on Amazon May 19, 2025. I am using a 12V 2.6A charging adapter. The charging light is constantly blinking red. It has from the beginning. The Power On light is green and stays green when my power goes out. Not sure how long my devices (6 zone board x2) stay on. Is the battery charging light supposed to be blinking red?

Konnected battery on Amazon