Emergency Light Battery Powered LED Manufacturer

How to Choose Suitable Emergency Light Battery?

 

Whatever the requirements are for your lighting, our qualified led emergency lights will get you on the right path.

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Lightide DLC Premium LED wall pack Lights battery backup

Overview 

Emergency lighting can get people out of your building in a timely manner in case of a problem. These emergency lights are designed to ensure there is still light when a building’s main power supply cuts out. Battery powered led lights that switch on automatically, are fitted as standard in commercial offices and new-build residential homes.

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Types of Emergency Light Battery

Batteries can be sorted into 3 categories: lithium-ion (Li) battery (LIB), alkaline battery, and nickel-metal hydride (Ni-MH) battery. Now we usually use rechargeable Lithium-ion, Li-FePO4 and Ni-MH batteries for emergency backup led lighting. 

EMERGENCY Lithium-ion battery for led lights

Lithium-ion

Lithium-ion batteries (LIB) are common in consumer electronics. They are one of the most popular types of rechargeable batteries for portable electronics, with one of the best energy densities, no memory effect, and only a slow loss of charge when not in use. 

Comment: Very high specific energy,  limited specific power. Market share has stabilized.

Emergency Li-Fe PO4 battery for led Wallpack light

LiFePO4 

The lithium iron phosphate battery (LiFePO4 battery) or LFP battery, is a type of rechargeable battery, specifically a lithium-ion battery, using LiFeP4 as the cathode material. There are significant differences. LFP chemistry offers a longer cycle life than other lithium-ion approaches.

Comments: Flat discharge voltage, high power low capacity, very safe and elevated self-discharge.

Emergency Ni-MH battery for led CANOPY light

Ni-MH

A nickel-metal hydride cell, abbreviated NiMH or Ni-MH, is a type of rechargeable battery. It is very similar to the nickel-cadmium cell (Ni-Cd). A NiMH battery can have two to three times the capacity of an equivalent size Ni-Cd, and its energy density approaches that of a lithium-ion cell.

Comment: Has higher capacity, less maintenance. 

Emergency Light Battery Comparison

Battery Lithium-ion Li-Fe P04 Ni-MH
Specific Energy 150–200Wh/kg 90–120Wh/kg 60–120Wh/kg
Volume Comparison Small Big Big
Weight Comparison Light Heavy Heavy
Cost Cheap Expensive Expensive
Cycle Durability 400-1200 cycles 1000-2000 cycles >500 cycles

How to Choose Emergency Light Battery for led lighting?

From the above descriptions, we know the difference between these batteries. So next we here recommend a simple method to choose a suitable battery for our emergency backup led lighting step by step.

  1. UL 924 Listed

UL 924 is UL’s Standard for the Safety of Emergency Lighting and Power Equipment. UL tests and certifies exit signs, emergency lights, and combo emergency exit signs to meet functionality, reliability, and visibility standards.

And now, Lightide has used UL-approved battery powered led lights, such as led garage & canopy lighting, led high bay, and led wall packs lighting. Here let’s show how to choose emergency backup for led lighting. 

Lightide Intelligent emergency UFO LED high bay lights-_recessed light
Lightide-BATTERY-BACKUP-of-emergency-led-garage-lights-1

2. Battery Type Choice

Existing battery-operated emergency lights shall be used only reliable types of rechargeable batteries provided with suitable facilities for maintaining them in properly charged condition. Batteries used in such emergency lighting or units shall be approved for their intended use and shall comply with NFPA 70. There are Lithium-ion, LiFePO4, and Ni-MH options.

3. Decide Duration Time 

As per NFPA 101, emergency illumination shall be provided for a minimum of 1½ hours in the event of failure of normal lighting.  Of course, it also can be up to the customer’ requirement.  Lightide’ DLC QPL emergency led canopy lights, the emergency work time is 1.5 hrs (90 minutes) at least to 3 hrs (180 minutes).

Lightide UL924 & DLC LED CANOPY light battery backup
Lightide UL924 UFO LED high bay light battery backup

4. Decide Emergency Power

Based on NFPA101, emergency lighting facilities shall be arranged to provide initial illumination that is not less than an average of 1 ft-candle (10.8 lux) and, at any point, not less than 0.1 ft-candle (1.1 lux), measured along the path of egress at floor level. The maximum-to-minimum illumination shall not exceed a ratio of 40 to 1.

Periodic Testing and Maintenance of Emergency Light Battery

Testing of required emergency lighting systems shall be permitted to be conducted as follows. Lightide usually will install a push-button switch on the surface of an emergency fixture for testing.

Visual Inspection

  • Self-testing/self-diagnostic emergency battery-operated emergency lighting equipment shall be provided.
  • No less than once every 30 days, a self-testing/self-diagnostic emergency shall automatically perform a test with a duration of a minimum of 30 seconds and a diagnostic routine.
  • The self-testing/self-diagnostic emergency lighting equipment shall indicate failures by a status indicator.
  • A visual inspection shall be performed at intervals not exceeding 30 days.

Operation Inspection

  • Functional testing shall be conducted annually for a minimum of 1½ hours.
  • Self-testing/self-diagnostic emergency lighting equipment shall be fully operational for the duration of the 1½-hour test.
  • Written records of visual inspections and tests shall be kept by the owner for inspection by the authority having jurisdiction.

 

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