Bought a van to do some travelling with a second 12v battery and 300watt inverter just wondering what it can power and how to properly use it? Thanks

Your inverter is “modified sine wave”, so not suitable for sensitive electronics. I wouldn’t use it with computers, TVs or stereos. It will work with small compressors, power tools, etc.

hawkxp71:

300 watts can do a bunch.
Typical laptop charger is 60w. Limit your screen brightness to get it much lower.

Waspy1:

I’ll echo what u/regnillub had to say. That’s a modified sine inverter vs a pure sine inverter. I wouldn’t plug a laptop or flat screen TV into that. Power tools, water pumps, an old refrigerator, sure. These days you can get a decent 300w PSW inverter for $50 or less. You might find an even better deal in a cyber Monday sale.

kungfujuice:

At least two squirrels

Source: Bought a van to do some travelling with a second 12v battery and 300watt inverter just wondering what it can power and how to properly use it? Thanks