Why OTC does not chose Li-ion batteries?

Writer：admin Time：2021-08-11 14:00 Browse：℃

Li-ion batteries is cheaper, ECO-Friendly, and it is popular in recent years.

However, 

First: The Li-ion battery is not recommend by IEC.

According to IEC60598-2-22:2014， Annex A , clause A1:

"

A.1 Batteries incorporated in emergency luminaires shall be one of the following types:

a) sealed nickel cadmium;

b) valve regulated lead acid;

c) nickel metal hydride.

Other battery types may be allowed provided they conform to their relevant safety and

performance standard and the relevant requirements of this standard.

"

Second: The Li-ion battery is not reliable in high temperature/Fire.

If the building catch the fire. The Ni-Cd battery, Ni-Mh battery will die quietly. How every Li-ion may expolde and become the fire source. (Take the latest Samsung Note 7 as example ) 

It is a exteremely low probability case.   However Once it happens,  It big events.

Conclusion:

If you need emergency light for bidding projects,  You should chose reliable battery to avoid any potential events

If you just need portable emergency light and sell in the mall / online shop,  Li-ion battery also good choice (Cheap & will not charge constantly)