I did as circuitsmith suggested some time ago.
See
https://community.cartalk.com/t/honda-battery-or-system-problem/123010/42
and
https://community.cartalk.com/t/honda-accord-12v-access-in-cabin-with-switch-off/163008
I got another year out of the battery, I suspect the several times it went dead took its toll.
PS thanks again circuitsmith!