Motorola APX 4000 Batteries: Motorola offers intrinsically safe batteries that come in a lithium Ion chemistry. The Apx 4000 Batteries offer ip67 rating and impress technology. The Apx 4000 series batteries come in a wide range of miliamps to meet the needs of your radio. If you do not see the APX 4000 Battery listed below, please feel free to contact us so we may help you find what you are looking for.