aico 3000 series with in-built lithium batteries

Smoke Detectors with alkaline batteries are becoming a thing of the past, and reputable companies should only install detectors with in-built lithium batteries.

 What is the Difference Between Lithium Batteries and Alkaline Batteries?

Essentially, they are both made of different materials and have different construction, which affects their performance in various uses.

 Why are Lithium batteries better?

Although alkaline batteries are a good all-around option for everyday electronic devices and can last longer than other types, lithium batteries, have several distinct advantages over their alkaline counterparts:

  • They’re designed to last longer.
  • They can withstand extremely low temperatures.
  • Lithium batteries are lighter than alkaline batteries. So, they offer an advantage when used with portable devices, especially cordless power tools.

In short, a lithium battery can be used as a high-performing alternative to a standard alkaline battery.

Why do alkaline batteries eventually stop working?

Alkaline batteries are non-rechargeable. They usually need replacing every 3-4 years, meaning an extra 3-4 costly callouts to replace them.

Do lithium batteries last longer than alkaline?

Lithium batteries are designed to last a full 10 years. Therefore, they should not need changing before the 10 yearly replacement cycle of the detector itself.


As a landlord or estate agent, it is a legal requirement to have a fully operational fire detection system installed in your property.

As alkaline batteries need to be replaced, this also means they are more liable to tampering. If a battery is tampered with, and the detector fails as the result of a fire, then the landlord/agent can be deemed liable for the injuries and damage caused.

As lithium batteries are sealed, in-built batteries, they cannot be tampered with, and in return ensures you are not held liable.

How much does a smoke detector test cost?

Prices start from just £65 + VAT (*dependent upon location).

Our NSI electricians offer the most efficient and professional service. Just take a look at our 700+ 5-star reviews! 

If you would like to find out more about our SAFE Certified package, which combines three amazing services in just one appointment (including smoke detector testing), with savings of over £100, click here.