Best Emergency Ballasts for LED and Fluorescent Lighting
The following emergency ballasts and related retrofit options are designed to deliver reliable backup lighting when power fails. This guide highlights five products that balance compatibility, runtime, and ease of installation for American markets. Each entry includes a concise overview, key specs, and a direct Amazon link for quick comparison.
| Product | Brand | Emergency Runtime | Voltage | Notes |
|---|---|---|---|---|
| BAL700 Emergency Lighting Ballast | BEST | ≥90 minutes | Dual 120/277 | AC output; automatic transfer to internal battery |
| Bodine B90 Emergency Linear Fluorescent Ballast | Bodine | 90 minutes | Not specified | Single Pole Test Switch; LED charging indicator |
| Emergency T8 LED Tube With Battery Backup (4ft) | dephen | ≥90 minutes | 100-277Vac | 2-in-1 tube; retrofits with ballast bypass |
| BatteryGuy FBP-1-40X Replacement Ballast | Best Lighting Products | ≥90 minutes | Dual 120/277 | LED test switch option; compatible with multiple lamps |
| Best BAL500 350–450 Lumens | Best Lighting | ≥90 minutes | 120/277 | Indoor installation; versatile for fixtures |
BAL700 Emergency Lighting Ballast

The BAL700 from BEST supports dual voltage operation at 120/277 volts, aligning with newer lamp technologies and helping extend lamp life. Its internal solid-state transfer switch automatically connects the internal battery to fluorescent lamps, providing a minimum 90-minute emergency illumination. This ballast is designed for compatibility with a range of modern fixtures, and the AC output ensures continued operation during outages. The unit integrates smoothly into existing systems while offering reliable standby performance.
Bodine B90 Emergency Linear Fluorescent Ballast

The Bodine B90 provides a 90-minute emergency operation with a straightforward feature set. Its single pole test switch makes it simple to verify operation during maintenance, while the LED charging indicator gives a clear status of battery readiness. This ballast is well-suited for linear fluorescent installations requiring dependable emergency backup in a compact form factor and is commonly used in commercial lighting upgrades and new installations alike.
Emergency T8 LED Tube 4ft With Battery Backup

This 4-foot T8 LED tube combines regular G13 T8 functionality with built-in emergency lighting. It emits up to 2200 lumens in normal operation and delivers 8W/960 lumens during emergencies, providing robust coverage during outages. Designed for retrofit into existing fixtures, this unit requires ballast bypass for installation and supports 100–277V operation. It is particularly suitable for retrofits in shops, warehouses, and offices seeking a two-in-one light source with dependable backup.
BatteryGuy FBP-1-40X Replacement Ballast

The BatteryGuy FBP-1-40X is a replacement fluorescent emergency ballast designed for broad compatibility with dual 120/277-volt systems. It includes an internal trans fer switch that automatically connects the internal battery, ensuring a minimum 90 minutes of emergency illumination. The unit supports a versatile range of lamp configurations and is aligned with common commercial fixtures, offering a practical option for ongoing maintenance or upgrades to emergency lighting capabilities.
Best BAL500 350–450 Lumens

The BAL500 provides 350 to 450 lumens of emergency output with a minimum 90-minute runtime. It can be installed inside, on top of, or remotely of the fixture, offering flexibility for a variety of installation scenarios. The unit is suitable for both switched and unswitched fixtures, helping facilities maintain code-compliant emergency lighting across different layouts and light configurations.
Buying Guide
- Runtime and battery type: Look for at least 90 minutes of emergency illumination with reliable battery chemistry suitable for your environment.
- Voltage compatibility: Many units support dual 120/277V systems; confirm compatibility with your existing electrical and lamp types.
- Fixture compatibility and installation: Decide between ballast-based retrofits or ballast bypass options, and verify whether the unit can be installed inside, on top, or remotely of the fixture.
- Lamp compatibility: Ensure the ballast supports the lamp types in your fixtures (T8, T5, LED tubes, etc.) and check for any required ballast removal or bypass.
- UL listing and safety certifications: Choose products with proper safety certifications and codes compliance for commercial use.
- Maintenance features: Features like LED charging indicators and test switches simplify regular testing and ensure readiness.
- Physical footprint and mounting: Consider the space available inside the fixture and the ballast’s dimensions for a clean installation.
- Upgrade path: If upgrading from older systems, evaluate whether a dual-output solution or integrated LED tube alternative offers better efficiency and compatibility.
- Warranty and support: Longer warranty periods and accessible vendor support help reduce long-term maintenance costs.
- Compliance with local codes: Ensure the chosen ballast configuration aligns with local electrical and occupancy codes in your area.