The thing is you have a in expensive inverter , it uses a lot of power buy it self
Chance are the spec are not real ?
The Chinese’s lie ?
I would bet a good 1200 watt inverter would out perform your 1500watt unit .
Lower Quality ? Performance?
Hmmm you are at the bottom of barrel with your inverter .
Inverters Are not created equal
Price ?
No one ever said solar off grid was cheep .
The reason for adding a charger is to keep your battery’s alive .
Having one and not running it wont help you at all .
I can’t tell you when or how much you run your charge , but the battery’s will tell you .
Honda 2200 watt with iota
Hmmmmm , well that is not my experience .
My champion 3500 watt could barely run one
The iota engineers said I need more power ?
The article was from 09 and that is in my time frame of experience .
Why don’t you give the tech guys a call
And ask them ? That is what I did .
Here is another way of looking at it
You used 40amps so 500watts
Your panels on there best day 400 watts
So 300 watts in x sun hours in Colorado
About 4.5 so may be 1300 watts for the day . You have 800 watts left .
But then your panels are flat
Flat panel kill your power and it get worse in winter .
Any way you mite only have 300watts left
Then this is on a good day .
So you will just walk your battery power down to nothing the battery’s are not dying
Its more like they are being
Murdered .
Let stop with the money aspect , you have only a few choices
1 sit in the dark
2 stay in a camp ground
3 go to bed early
4 figure a way to charge your battery’s to full every 3 or 4 days .
More solar will help .
But I have 4 times the battery power 16 gcbattery’s and 4500 watts of solar
And I have no choice but to run the genarator .
I run every morning for a hour or more
So I get maybe 6 years or more out of them .
You are gaining experience and there is a learning curve , my family lived off grid in the 70s in Norway 6 hours drive from any where in good weather ( we skied year round )
My uncle ran a lister Diesel genarator every day from 4 pm to 800pm .
I only get 2.5 sun hours hours here
It is what it is .
I’m just sharing information here try to help , it kind of a pay it forward thing for all the people helping me along the way . ?