How to calculate the runtime of your sump pump when connected to a battery and off grid inverter.

[@Andy-df5fj]

Something that will become significant for the longer duration scenarios is the inverter idle power draw that sucks power from the battery 24/7.

[@OffGridBasement]

Very good point. Thanks for the info and the comment.

[@technishn]

Agree with over rating the Inverter to cater for switch on surges. I needed a 1700W inverter to run a small freezer reliably. This time of year, not enough sunlight to keep it powered continuously.

[@OffGridBasement]

Thanks for sharing and for the comment.

[@javiercoronel1169]

Great channel

[@OffGridBasement]

Thanks!.... and thanks for the comment!

[@richeastmain4031]

I have the same inverter but is branded as Giandel. I just checked and it uses about 6 1/2 watts turned on with nothing plugged into it. That should be added to the battery drain in the calculation.

[@OffGridBasement]

Thanks for the info and the comment. I'll see what I can do.