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Solar Battery Backup Basics
Plan a small solar-plus-battery setup
This guide walks through selecting panels, batteries, charge controllers, and inverters for a modest backup system, covering load estimates, wiring order, and core safety practices.
- solar
- battery
- backup
- inverter
- energy storage
List critical loads
Identify devices to power (lights, router, phone charging) and calculate daily watt-hours.
Size panels and storage
Match panel wattage to daily needs and select battery capacity with at least one day of autonomy.
Pick controller and inverter
Choose an MPPT controller sized for panel voltage/current and an inverter that handles surge loads.
Safety and wiring order
Connect batteries to controller first, then panels; use proper fuses, disconnects, and follow local codes.