Lithium-ion batteries provide a reliable power source that can be recharged and used until the battery oxidizes and loses its capability to provide power. This makes lithium-ion batteries the natural choice for devices that require a lot of power such as laptop computers, digital cameras and cell phones. Certain precautions help prolong the life of the battery so that it can provide a strong charge for the longest period possible to the devices you're powering. The Walkie Talkie Li-ion Battery. Stay powered up for a long time. It has the longest performance with no memory effect, highest quality, it is 100% brand new battery.