a moderately cheap route to go, a 400W or larger inverter, a deep cycle battery, and a 12v 'float' charger (wall wart type).
The inverter if chosen properly should put out enough wattage at 120v to power a Mag 9.5 for about 14 hours. Look for inverters that have higher efficiency and the battery will seem to last longer. (less loss through the inverter.)
An inverter/ charger is the base of a solar or wind system anyway, so if you've thought you might want to explore that route, look for the better inverter/charger combo now. Many R/V stores carry a <u>converter</u>/charger that will charge the battery when line power is present. An <u>inverter</u>/ charger will charge when line voltage is present and also convert the 12VDC from the battery into usable 120V AC power for your equipment.
Guesstimate pricing;
Battery $50 and up
Inverter $75-$125 (1000W)
Charger (wall wart) $20 (automotive style 10 A charger $40ish.
Inverter/ Charger 2000W $800+ and you still need batteries.
links:
http://www.donrowe.com/inverters/inverter-charger.html">http://www.donrowe.com/inverters/inverter-charger.html</a>
[IMG]http://www.tripplite.com/en/products/product-series.cfm?txtSeriesID=322&EID=14601">http://www.tripplite.com/en/products/product-series.cfm?txtSeriesID=322&EID=14601</a>
of interest (at bottom of page 2 is a guide describing load vs time on what type of battery.
[IMG]http://www.campingworld.com/includes/productSpecs/26433_data%20information.pdf">http://www.campingworld.com/includes/productSpecs/26433_data%20information.pdf</a>
3000W inverter; [IMG]http://www.campingworld.com/shopping/item/xantrex-xpower-3000-plus-inverter/26433">http://www.campingworld.com/shopping/item/xantrex-xpower-3000-plus-inverter/26433</a>
You can DIY with research, and either go with a solar charger to keep the batteries charged, a separate charger and inverter, or the most expensive, least maintenance intensive inverter/ charger.
I have a couple 400W inverters in cars for running laptops and printers away from home, a 3000W inverter/charger in my R/V that can run the entire thing for as long as the batteries last, and a backup inverter for the house for tanks/fridge whatever if the need arises.
While my genset is great, it's one thirsty beast. I have 500G of diesel underground just to feed it, and when that runs out it gets dark. I can get a week to 10 days, and have had it run out during one ice storm.