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. 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. 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.

1. Battery Powered LED Lights Emergency Lighting Guide Home / Lighting Guide / Battery Powered LED Lights Emergency Lighting Guide
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 Batteries
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.
Battery Powered LED Lights
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How to Choose
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2. 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.
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.
Comment: Flat discharge voltage, high power low
capacity, very safe and elevated self-discharge.
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 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 Battery Powered 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 Emergency Battery
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3. 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.
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).
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 Battery Powered LED Lights
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.
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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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