title: "Blackouts & batteries: what to expect" description: "How battery backup behaves when the grid drops, and how to avoid overloads." lastUpdated: "27 Feb 2026"

Blackouts & batteries (what really happens)

When the grid drops, a system with backup wiring and the right gateway can switch to island mode within a fraction of a second. Your essential circuits stay powered until the battery runs down.

Avoiding overloads

Know your inverter's continuous power rating and its surge rating.
Don't start several heavy loads at once.
Consider a manual transfer switch, or load-shedding on large appliances.

title: "Blackouts & batteries: what to expect" description: "How battery backup behaves when the grid drops, and how to avoid overloads." lastUpdated: "27 Feb 2026"

Blackouts & batteries (what really happens)

When the grid drops, a system with backup wiring and the right gateway can switch to island mode within a fraction of a second. Your essential circuits stay powered until the battery runs down.

Avoiding overloads

Know your inverter's continuous power rating and its surge rating.
Don't start several heavy loads at once.
Consider a manual transfer switch, or load-shedding on large appliances.