[WellyP]

I would go with a larger one. It's $99+ The peak wattage should easily start a small vacuum and run other power tools. http://www.harborfreight.com/1200-watt-continuous2400-watt-peak-power-inverter-69659-8890.html

[WellyP]

And make sure you have a really good bank of HEAVY DUTY DEEP CYCLE lead acid batteries that you never discharge below 50%. http://www.batterystuff.com/batteries/golf-cart-products/6-volt-deep-cycle/t-105-6-volt-trojan-golf-cart-batteries.html I used a bank of 4 Trojans for any years in Marine duty with great results.