A lot of "bargain" inverters are like a counterfeit Big Bad Wolf
They huff
They Puff
And cannot blow over a feather
Outfitting a rig with lots of battery electrical power for teenagers is a lot like having to be wise when furnishing them with a bank card. Give them a Platinum Credit Card (big inverter)and they're gonna max it. You can bet your bippy on it.
When I outfitted a Yawl's cabins for a couple of rambunctious pre-teens I recommended a 200 watt inverter for their games (X-Box). Sure as shootin' twenty minutes after it went on line. "Hey the game quit!" x-box, TV and stereo switched on all at the same time for one solitary kid. The inverter said "No Way Jose" and protected itself. Danged kids came up with their own power strip and believe it, all six plugs had been stuffed.