http://www.donrowe.com/inverters/puresine_1500_pst.html

Anyone know of this manufacturer?

I figure, if I was really serious about needing to power a 400 watt laser printer, since the first two minutes can reach up to 2 to 3 times the rating, hence possilby 1200 watts... a 1500 watt inverter should be okay... and even if I don't ever use the laser printer... I should be set for handling just about anything I might ever need to power... with two 6 volt golf cart batteries by Roll Surrette (true deep cycles...) ... totaling 225 amp hours... and a heavy duty relay to charge them... (thanks to Drillock's suggestion...)

http://www.mouser.com/search/productdetail.aspx?R=120-901virtualkey51320000virtualkey802-120-901

as well as good high end solar panel... which I'm still trying to decide on... (any suggestions?)