Double Face Exit Signs
Designed for two-way visibility in corridors; double-sided EXIT legend.
173 Products
Battery Backup Exit Signs – 90-Min Runtime
battery backup exit signs provide reliable, code-ready egress visibility. These UL 924 LED signs keep the EXIT legend illuminated for at least 90 minutes during a power failure—ideal for offices, schools, warehouses, hospitals, and retail. Browse the parent category exit signs, pair with battery backup emergency lights, and compare wet-location exit signs, edge-lit exit signs, and low-profile exit signs.
UL 924
90-Min Backup
LED
Self-Testing
Single/Double Face
Universal Mount
Buyers Guide Tips
What to Look for in Battery Backup Exit Signs
- UL 924 & 90-minute runtime: Verified emergency operation and compliant photometrics.
- Battery chemistry: Ni-Cd, NiMH, or Li-ion/LiFePO4—compare recharge time, temperature range, and cycle life.
- Legend & faces: Red/green letters, field-selectable chevrons, and single/double-face configurations.
- Diagnostics: Self-testing options to automate monthly/annual checks and streamline inspections.
- Mounting & power: Universal wall/ceiling/end mounts; dual-voltage 120/277 VAC input.
- Environment: Choose wet-location exit signs for spray or wash-down; consider cold-weather packages as needed.
What is a battery backup exit sign?
A UL 924 exit sign with an internal battery that keeps the legend illuminated for at least 90 minutes during outages. For non-powered alternatives, see
self-luminous tritium exit signs.
Our LED exit signs with battery backup use maintenance-free rechargeable packs and solid-state chargers with automatic transfer for dependable operation when mains power fails. Field-selectable chevrons, single- or double-face panels, and universal wall/ceiling/end mounting simplify installation across hallways, stairwells, and open areas.
Many models include self-testing diagnostics to automate monthly and annual checks—supporting NFPA 101 and OSHA readiness. For harsher environments, step up to wet-location exit signs; in corrosive or dusty areas, pair with NEMA-rated emergency lights.
Runtime, features, and environmental ratings vary by model—review specifications and submittals before installation.
Related Categories
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Edge-Lit Exit Signs
Designed for sleek, low-profile installs where a modern “floating” look is desired.
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Letter Color Green Exit Signs
Designed for facilities requiring green EXIT letters for high-visibility egress marking.
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Letter Color Red Exit Signs
Designed for facilities requiring red EXIT letters for high-visibility egress marking.
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Self Testing Exit Signs
Designed to simplify inspections with automatic self-diagnostics.
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Single Face Exit Signs
Designed for one-direction viewing with a closed back; mounts flush to walls.
Battery Backup Exit Signs Spec Guide
Spec Snapshot
- Compliance: UL 924 listed with a minimum 90-minute runtime; supports NFPA 101 egress. Verify local requirements (e.g., NYC 8" letters).
- Legend & Faces: Red or green LED legend, field-selectable chevrons, and single- or double-face configurations to match your layout.
- Battery & Electronics: Sealed Ni-Cd/NiMH or lithium-ion packs with solid-state charger/automatic transfer, low-voltage disconnect, AC lockout, brownout protection, test button & status LED.
- Mounting & Power: Universal wall/ceiling/end mount (canopy on many models) with dual-voltage 120/277 VAC input for simple retrofit and new install.
- Housing & Finish: Flame-retardant thermoplastic or metal housings; common finishes include white, brushed aluminum, bronze, and matte black.
- Options & Environment: Self-testing diagnostics available; choose damp- or wet-location ratings and cold-weather packages as needed.
FAQs About Battery Backup Exit Signs
How long do battery backup exit signs stay illuminated?
Compliant units provide at least 90 minutes of illumination during a power outage per UL 924 and NFPA 101.
What battery types are used?
Common chemistries include Ni-Cd, NiMH, and lithium-ion/LiFePO4. Lithium options are lighter, recharge faster, and offer longer cycle life.
Are battery backup exit signs hardwired?
Yes. They connect to building AC power (typically 120/277 VAC) and automatically transfer to battery during outages.
Do they require regular testing?
Yes—perform a monthly 30-second functional test and an annual 90-minute full-discharge test. Self-testing models can automate these checks.
Can they be used outdoors?
Only if the unit is appropriately rated. Use damp-location models for humidity/condensation and wet-location units for direct spray or exterior exposure.
What mounting options are available?
Most signs include universal mounting hardware for wall, ceiling, or end mounting. Field-selectable chevrons provide flexible egress direction.
What legend colors and face options can I choose?
Typical options are red or green LED legends and single- or double-face configurations. Some jurisdictions (e.g., NYC) require 8-inch letter height—verify local code.
How long do the batteries last before replacement?
Service life is typically 3–5 years, depending on chemistry and environment. Routine testing helps identify when replacement is needed.
Are self-testing diagnostics available?
Many models offer self-diagnostic electronics that automate tests, report faults, and simplify inspection readiness.
How do I verify compliance?
Confirm UL 924 listing, 90-minute runtime, and applicable ratings. Review manufacturer submittals for testing procedures and installation requirements.