do it use a lot of electricity if left on all the time
2028835
No only because I never leave small appliances pluged in and on not even the coffee pot
1480426
You can leave the inverter on all the time. It does use a couple of watts when there is no solar input, but that is not a problem.
994668
Yes, we leave ours on all the time. It takes too long to warm up otherwise. I might shut it off during the summer if I don't need it as much.
609865
You can use it continuously as long as you are not overloading it. Remember, you have leave a margin for the power surge.
1711564
I accidentally left it on overnight and discovered it doesn't have an auto-shutoff, but the batteries were still going strong. My guess is it uses very little power.
1298637
Yes, it keep you things running for a specific amount of time. The more things you have plugged into it the less time that it keeps the power going to the appliances. I use my for my wife and modem to keep them running when the power go out. It is not recommend for big appliances.
1787124
Yes, this is an electric unit that needs to be plugged in for the entire time it's being used.
1790863
Yes, you leave it plugged in all the time. I have had the unit for four months and it has been working fine. I have not had a problem with my car battery since I installed it. Hope you have the same results.
738133
Yes it does need electricity there is a computer control board and a fan that runs on electricity
879078
I do not know the answer to this as I always use mine plugged into electricity.
1200372
I use it primarily unplugged unless I am on for extended periods of time. Occasionally I have had too much data combined with long periods of use that require I plug it in because it gets so hot.
1852429
Don't worry. I used to leave it plugged in all week long (they recommend leaving it always plugged in) and even all winter long, without a problem.
419531
No, the unit is always lit. It is a low voltage system, though, and doesn't use much power.
1724481
It doesn't seem to require excessive power. Ours is pretty basic and it works fine.
1535847
Yes, we leave it on all the time! Absolutely no negative issues with this heater! Five star all around!
1884963
probably not but I don't see the need to keep it plugged in all the time. just unplug it when the blue lights are lit.
1296884
It is not battery powered. It comes with a plugin transformer. Settings are retained in non-volatile memory, so if there is a power interruption, the settings remain intact.