Select from one of the Nextel Two-Way Radio Batteries below. We carry Nextel NTN8100 and NTN 8971 Two-Way Radio Batteries. Accessory Genie manufactures aftermarket and OEM Nextel Two-Way Radio Batteries. All Nextel Two-Way Radio Batteries are backed by our three year warranty. Same day shipping for all purchases and a 30 day money back guarantee is included at no extra charge.