inverter/charger
Depends on how many batteries you have and what you want to run from the inverter and that will depend what size inverter/charger.
My inverter/charger is a 2000 Freedom and have 4-6volt T-105's and can run my TV and Microwave and my wife even has used a hair blower too

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We do use a lot of 110 appliances when we are out cruising on a weekend or a few weeks,when we ordered our 2007 H-36 we wanted a few bells and whistles so we could enjoy when out ancchored here in Florida,we are retired and do spend alot of time out on our sailboat.
Remember that the larger the battery bank the more larger improved charging system you will need,I also have solar and Gen.
Nick