Electric fireplace logs can typically be put in an existing wood burning fireplace if the log set is small enough to fit within the firebox, the firebox has been removed of any grates or other objects, and that there’s a nearby electrical outlet if required.
We place our own electric fireplace logs inside our living room wood burning fireplace outside of the winter months when the masonry fireplace isn’t in use.
We ensured that this model of electric logs would fit inside the firebox of this fireplace by measuring the dimensions.
There’s also an electrical outlet located on the wall near and outside to the fireplace for us to plug it into.
Had there not been a nearby electrical outlet then we would have needed to have one installed or bought an electric fireplace log set that can run on batteries.
Electric fireplace logs that have a heater will always need to be plugged into an electrical outlet and won’t be able to run on batteries.