saygudday - i've had this basically cheap
square wave inverter
for at least seven years now and i've yet to find anything it can't run. i've used it on the 600 watt shop vac, power drill, dremel tool, flat screen
tv, tv signal booster, fans, and computer. probably more i can't remember.
if you're just charging
small batteries like in your vhf
shaver or such, i find a small inverter
of maybe 100 watts or less is a better idea. you don't lose as many amps to inefficiency with the smaller inverter. i hook mine up to a cigarette lighter plug
wired off the 12 volt panel.