A selected-load battery design starts with the exact circuits, measured or nameplate demand, starting surge, desired duration, usable stored capacity, transfer behavior, and operating limits. Refrigeration, pumps, communications, lighting, HVAC, and medical devices are included only when the approved equipment and design support them.
Key Takeaways
- Document running load, starting surge, duty cycle, desired duration, and equipment operating limits for every proposed circuit.
- Medical equipment requires written device-manufacturer compatibility, device-specific backup, and a separate emergency plan; no home source promises uninterrupted operation.
- HVAC or EV charging belongs in the backed-up group only when the exact equipment, output, transfer design, and approved settings support it.
- Portable generator hookups remain a separate path at $900–$2,500.
How we build the list on site
We walk the directory, measure or estimate running watts, and match that to the listed continuous and surge ratings of the battery. The written scope names the circuits. It does not say “whole house” unless the equipment actually can.
Planning Backup Power for Your Home?
Plan for the next outage with a listed portable-generator hookup or a compatible battery-backup installation. We evaluate the panel, selected loads, equipment, and transfer method before quoting the electrical scope. Call (571) 444-6886 to request an in-home assessment.
Start at home battery wall packs.
