inputs.text: great batteriesbut output power limited goal0 universal inverter - 350 batteries chainable 4 goal0 batteries dont add wattage battery thinking get much total output wattage thats right not enough output wattage power sump pump small stove burner small microwave oven electricity goes outat time review maximum output wattage receive chained 350 wattage totally dependent inverter used goal0 33001 extreme universal inverter fact not promoted enough vendors manufacturer goal0 goal zeroyou get 400 watts output power based existing goal0 universal inverterafter speaking manufacturer goal0 said engineers working inverter allow output wattage chained batteries expect market sometime 2012meanwhile goal0 350 battery chained batteries universal inverter great running anything not consume 400 watts power way general rule thumb calculating wattage electrical voltage x amps watts example device combined devices connected power extension cord runs typical american residental electric circuit 115 volts label device says 3 amps total 3 amps devices extension cord could use equation 115 volts x 3 amps 345 wattsusing product power several things electricity goes result storm amazing device enables utilize small things life help establish normalcy household minor major critical incidentfor example result hurricane irene electicity went three days gas powered electric generator running sump pumps deep freezer security system andrefrigerators watching news movies backup 12\\ screen crttype monitor hooked dish sattelite receiver extension cord plugged one goal0 ranger 350 kit ranger universal inverterbefore running generator plugged home security system professionally installed comprehensive system product not power security system also charged security system backup battery time good know case longterm major outage electrical grid cannot get gasoline power gasoline generatoryou also obtain alligator clips cable adapter goal0 battery trickle charge batteries batteryoperated backup sump pumps toothere several peripheral goal0 products 350 battery universal inverter two critical items goal0 22003 escape 30m solar panel briefcase goal0 47mm input 8mm input latter item cable adapter allow fit output plug solar panels batteries chain batteries together need goal0 chain cable toofor convenience reviewed aforementioned goal0 solar panels adapter cable separately amazonby many accounts year 2012 challenging year includes warnings scientists major solar flare activity may produce emp damage electrical grid getting prepared way gostay safe