The batterie light is flashing not in a regular base but doesn't stay on

It's indicating the idle rpm is too low or a problem with the battery and/or alternator. Test your charging system, using the link below:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-10.html#post1973613

Set idle rpm to spec.