Renogy inverter fan noise

[Landyseverywhere]

If going Renogy ( which IMO are superb) and concerned about customer service( something I've never neede) buy from a third party... Magnum Motorhomes have great reputation for service and are around the same price as direct from Renogy...it is the sellers responsibility to provide problem resolution

 

[Bertietoo]

Also Lithium or lead acid?

I dont know the charge rate as I don't have a clamp meter or a shunt.
It's charging 2 x 110ah lead acid

 

[merl]

I suspect the charger isn't actually working particularly hard whilst charging lead acid overnight so the fact that the fan runs for long periods suggests that either the charger isn't particularly efficient OR the temperature switch controlling the fan is set unnecessary low.
If you're able then you could explore adding another fan switch that I posted earlier, if you fancy that but are not sure what to do I can talk you through that or fit another charger and retain the unit and use the inverter section only.