question on inverters?

[csands007]

Say if you was pulling 1200 watts on a unit about how long would a good 12 volt battery would run it before it runs down and had to be recharge, For info purpose a new marine battery with 700 capacity separate from auto but recharged from alternator. Just curious

 

[redytrk]

About 15 to 20 min. fully charged deep cycle battery. All the inverters I have had would shut itself down at about 11.8 volts. So the battery is still not depleted.