With that honda 1000i, you're pretty much limited to a 30a charger. Yes it may handle a 40a for short durations, but on a regular (daily) basis, and for several hours at a time, it would do a real number on the genset. Open link and click on specs:
http://powerequipment.honda.com/generators/models/eu1000i A 30a(dc) charger will pull about 6.5 amps(ac).
With a 150Ah AGM bank, at 50%, and a 30a charger set at 14.4v, it will take about 90 minutes to do a 50-80%, and about another hour to do the next 80-90%. Take notice, that's 45Ah's in 90 minutes, followed by only 15Ah's in 60.
Keep in mind, most portable chargers are crapola. They operate outside of ones control, and often charge at inappropriately high voltages, i.e; above 15v. And converters are great for converting, but way too slow for charging in a boondocking/generator situation. You need a charger, and not necessarily a 3 stage. A mega watt s-350-12, for example, would serve you well.
http://www.12voltpowersupplies.us/... Another YES to going solar :)
Good luck with your project... I converted a mini school bus.
