wrote:

I cant remember the rule of thumb for sizing an AC shore power
charger
to the house bank size. Maybe 10% that is, 40 Ah charger for a 400
Ah
house bank????

A wet cell battery can accept an average of 15% of it's AH capacity as
a recharge rate over the charging cycle.

Thus, a 400AH bank will accept 60A recharge average over the recharge
cycle.

Lew