How Long Is The Shelf-Life For Unused Batteries?

Posted by Two Way Direct on 14th Oct 2022

   When purchasing a two-way radio system, it is always necessary to be prepared with replacement accessories, such as batteries. That way, in the case of an uncharged radio or a handheld with low power, you can always ensure that communication is possible.

   So, what if some of these extra batteries go unused for a while? You may be wondering how long the shelf life is for these accessories, which are stored for future use.

   Many two-way radio batteries are made up of Nickel Metal Hydride (NiMH) and Lithium-Ion.

   When identifying the sustainability of an unused battery of these types, there are two aspects to look at; its cycle-life as well as the shelf-life.

   The cycle-life of a battery is basically the amount of times it can be charged and discharged before losing performance abilities. With regards to Lithium-Ion (Li-ion), the cycle-life is greatly affected by the amount of battery storage, which is being utilized. This use of battery capacity is known as “depth of discharge.” Rechargeable Li-ion batteries have a cycle-life of about 600-1,000 charges. The cycle-life for NiMH batteries are typically 700-1,000 charges, however, they are more energy dense so they will possess a longer shelf-life due to the ability to go longer without a need to charge.

   Shelf-life is how long these batteries will last while in storage or during stagnant periods without being used. For NiMH batteries, it is estimated that they will last up to five years, but realistically they can sit for about 3 years. Rechargeable Li-ion batteries, on the other hand, are able to last 2-4 years on the shelf.

   Understanding shelf-life and cycle-life are important when piecing together a system that will last.


For more information on replacement batteries for your two-way radio communications, reach out to us at 888-742-5893 or request a quote and we will get back with you.