450 amp hours (you put two batteries in series you add VOLTAGE not Amp hours
You put the two pairs in Parallel THEN you add amp Hours. not voltage
Other than that you are good.. Trojan suggests a slower recharge than Xantrex does but there is a trade off. Recharge time (important when using Generator) v/s overall battery life.. I do not think Xantrexs suggested 30% C/20 is too fast But if you cut it down a bit.. The batteries will need less maintence
(Cut it down by reducing the Amp HOurs of battery)
Odds are that inverter can't charge faster than 100 Amps anwyay so you are good.
