That’s a good smart charger. I have one and would trust it hooked up indefinitely to maintain the battery on float. However, unlike the Iota with IQ4 or a Zamp solar charge controller, it does not periodically revert to bulk,absorption, then float to insure all remains well and I’m not sure that it reverts to bulk mode if the battery drops due to a load.
If you have an Iota/IQ4, just leave the camper plugged into the same outlet where the Noco G7200 would be plugged. If you are running the fridge at up to 5 amps and the fan at up to 3 amps, you will exceed the ability of that 7 amp charger to keep up. The G15000 might be a better choice. Also, if your fridge is a 3 way, that charger couldn’t keep up with its power usage alone.
With the camper plugged into shore power, both 2 & 3 way fridges will run off of AC power automatically.
Do the math with your particular situation and appliance power needs before spending money.
Paul