RLT Onsite

easierTIPS

[VIDEO] Emergency Lighting Battery types

 

There are four different types of emergency lighting batteries.  These are:

  • Sealed Lead Acid (SLA)
  • Nickel Cadmium (NiCd)
  • Nickel Metal Hydride (NiMH)
  • Lithium-ion Phosphate (Life PO4)

Sealed Lead Acid

These are typically larger batteries used in ‘high-drain’ applications such as emergency twinspot luminaires or multiple lamp battery systems.

Nickel Cadmium

Whilst becoming less popular, these are still a very common battery coming mainly in D-cell or C-cell size.  They are typically used in older technology compact fluorescent and T8 linear fluorescent luminaires.

Nickel Metal Hydride

The smaller size of the NiMH battery (typically AA-cell size) makes it ideal for limited space applications such as T5 linear fluorescent as well as many LED luminaires.

Lithium-ion Phosphate

A relatively new technology, LED luminaires in current production are now starting to use this technology.  They have a life over double that of other technologies (typically 8 years), cope will in harsher environments (i.e. freezer lighting) and are heavy duty.

When specifying a battery ensure you give the following information:

  • Which of the above battery types is it?
  • This will be on the battery but if you are struggling to read it, you can also be reasonably certain that each cell will be 1.2V so a 3-cell battery would be 3.6V.
  • Amp-hour rating. This is the capacity of the battery which is relative to how long it will last.
  • Is it in a stick configuration or are the cells side by side?
  • Connections/terminals. There are many different types such as fly-leads or spade terminals.
  • Any other details. Some batteries may be in an intumescent sleeve, some may be mounted on a plate, or in a triangular bundle.
  • As always, an image of the battery and the label is excellent if it can be given.

Download this as a pdf document below.

Sorry, no results found, try again...

Share this

It's only fair to share...Share on facebook
Facebook
Share on google
Google
Share on twitter
Twitter
Share on linkedin
Linkedin