Be prepared to stay in touch when your original battery loses its charge. Motorola replacement batteries provide a backup power source and also give you the opportunity to increase talk time. Some batteries require a new battery door. Be sure to match your battery with the correct sized battery door cover. The Motorola / Nextel BK70 High Performance Battery ( SNN5792A / SNN5792 ) manufactured by Motorola is compatible with the Motorola Renegade V950, Sidekick Slide, Nextel i335, Nextel ic402 and Nextel ic502 phone models.