Calculating power needed for portable electronics?

[Jerry Waters]

Is there a easy to understand equation for understanding how much power would be needed for portable electronics? I'm going to be setting up some solar and a battery bank on my truck and need to get this figured out. Thank you!

 

[Richard Valladares]

Many of the sites like Jackery will have that chart on the product pages for their portable battery banks

 

[Ken S]

Have you put a list together of all the items you will be needing power for?

 

[Ken S]

Also, now that I'm thinking about this all day, get yourself a Watt meter and start running these things to determine power needs.