how old is battery and has it been tested with a load tester
any after market components ?
any check engine light on ?
have you had it scanned with a honda scanner or equivalent & retreieve any faults codes ,hinda scanner can communicate with all the car modules , nit just engine module , let say that is what advance auto or auto zone offer .
alternator is charging 14 volts plus with all loads on , ac, radio , headlights etc.. have you checked ?
have you tried to test for the drain if the above is good
Battery Drainage Test
turn ignition switch off and wait 5 minutes before performing this test ,to let all modules go to sleep & stop drawing power
2- settings on voltmeter will be on milli amps.
3- go across all the fuses in the car and see which one is reading higher than 0.3 to 0.5 milli amps
4- the fuse drawing more than 0.5 ,will be the suspected circuit that needs inspection for the battery drainage.
Please let me know
ASE Certified Technician