Invertor works well, but keep in mind 300Watts of battery power is a small bucket of power, don't try any inductive loads.
instant AC power - If your power goes out you can live, for a while, with no lights.
Does what it was made to do - I don't know what the people are thinking that give this item a one and two star rating because it isn't a gasoline-powered portable generator. No where in the description does it say it's a gas-powered generator, and these people are belittling a product that they bought because they made a mistake by not researching what the product was and because they don't seem to know the difference between a portable power-pack and a real generator. This is a battery powered portable power unit, first and foremost. They also put a power inverter on it so that you can power small 110-volt tools if necessary but don't expect it to provide the power of a gas-generator or your ac-mains, and there's a 12-volt cigarette outlet too for 12-volt tools. They put a small compressor on it and it works fine for emergencies, but it's not meant to inflate tires all the time like a Campbell-Hausfield 10-hp dual-stage compressor with 50-gallon tank, it's an emergency convenience, and that's the point that should be remembered. The battery takes and hold a charge well and the unit supplies all the power I need for small emergency situations when traveling or at home during a minor power outage.

No, it won't run your TV set, it isn't meant to, but when used within it's meant capabilities it performs it's duties fine, such as running a nebulizer for emphazema medication during power outages, or running a small radio. But if you're needing to power large appliances, of course it won't work, you have to rate the power-source to the power consumption of the appliance, including startup surge capacity. In other words, read the power-rating on the appliance and look at the power rating of Xantrex, if the appliance meets or exceeds the rated load capacity of the Xantrex, don't plug it in, it isn't going to magically supply more power than it's capable of. If you want to run your TV, air-conditioner, hot-water heater, well pump, washer/dryer, dishwasher, home theater system, or refridgerator, then buy a gasoline powered generator instead. That's why I bought my 15-Kilowatt gas generator.
Doesn't hold a charge! - I followed the charging instructions for the Power Pack 300 C. The Power Pack ran a 40 watt table lamp for 4 hours as promissed!

However the next time I charged the system the same thing happened.
never worked but they replaced it -



We charged it immediately and put it away for our first power failure that didn't happened until last night (almost a year after buying it).
Great item - I use it in the yard to replace a long and tangled power cord to weedwack, to trim my bushes, and light an area at night for 15 -20 mins with a 300 watt light.
I use it all the time! - I used the air compressor function to re-inflate it. It takes a long time to inflate tires, compared to those 50 cent air/water machines at the gas stations, but it gets the job done and I can take it with me. I get power for 2-3 hours.