Some of the new stuff will fool you I got a 450 watt that will fit in your hand and it will run a power drill with ease. Also want to say keep plenty of at least 90% rub alcohol on hand you can pour some in a small can and cook or boil water.
Just ordered a 2500W inverter (Whistler). Got a great price on Amazon. plus cables, extra fuses, extra connectors, etc etc. will be here prior to the election results ;-)