High Bay LED Lights With Battery Backups

Why Battery Backup High Bays? Code Requirements Shape the Decision

Building codes and adopted standards, including NFPA 101 and the International Building Code in many jurisdictions, often require emergency lighting for commercial and industrial occupancies. The requirement is straightforward: when normal power fails, emergency lighting must activate within 10 seconds and maintain a minimum illumination level of 1 foot-candle along the path of egress for at least 90 minutes.

In warehouses, manufacturing plants, gymnasiums, and other high-ceiling spaces, dedicated emergency light heads mounted low on walls often cannot provide adequate illumination across the full floor area. LED high bay lights with integrated battery backup solve this problem by using the existing high bay fixture — already positioned and aimed for optimal coverage — as the emergency light source. When power fails, the battery pack drives the LEDs at reduced wattage (typically 10–25% of normal output) for the required 90 minutes.

Built-In vs. Add-On Battery Backup: Which to Use

Built-In (Integrated) Battery Backup

The battery pack, charging circuit, and transfer switch are factory-installed inside the high bay fixture housing. This is the cleanest installation — one fixture, one power connection, no external boxes. Built-in battery backup is the right choice for new construction and for retrofit projects where you are replacing the entire fixture. Most LED high bays we sell in this category use this configuration.

Add-On (External) Battery Backup

A separate battery pack that mounts near or on top of an existing LED high bay fixture and taps into its wiring. This is the right choice when you already have LED high bays installed and need to add emergency capability without replacing the fixtures. The add-on pack connects between the AC feed and the fixture’s LED driver, intercepting the circuit to provide battery power during an outage.

Dedicated Emergency Fixtures

For spaces where full high bay coverage is not needed during an emergency — for example, when only egress paths need illumination — a lower-cost option is to install a few dedicated emergency battery backup fixtures or emergency exit signs alongside standard (non-backup) high bays. This is common in smaller facilities where the code only requires illumination of exit paths, not the entire floor.

Confirm High Bay Emergency Coverage

Share ceiling height, fixture spacing, egress paths, voltage, runtime requirement, and testing needs so battery backup high bays can be checked against the facility plan.