My gate consists of an HEQ5 Pro or HAE69C, 2600MM + EAF + EFW, ASI120, Mele3C and I power everything using an Bluetti EB70S LiFePo4 battery connected via a Pegasus Advanced Powerbox.
The EB70S is rated for 718WH and lasts the entire evening at least 30% capacity to spare. It comes with an AC charged but can also charge from solar panels or other 12VDC source.