Winnipeg wrote:
Thanks for several great suggestions. The Yamaha puts out 900w max, and I don't plan to buy a new one, so I will get the biggest external battery charger that it will handle.
Follow-on question: when I run the main RV generator (5.5 kw), the built-in inverter/converter charges the batteries. What would happen if I ALSO use my new external battery charger? Both of these are smart chargers.
The Yamaha will put about 35 amps max into the battery. If you can set the inverter/charger at 30 amps, set the fridge and water heater to propane only you should be good to go. Not really going to work with residential fridge.
A 30 to 35 amp portable will work fine too. 20 amp is fine also... just takes more time.
The Yamaha 12v direct charge is maybe 8 amps if you do not use eco-mode. So very slow and extra noise.
I recommend this converter over the battery charger:
PowerMax 35 amp BoondockerMultiple charging sources will not create any issues.
