The Smart-UPS Battery Backup SRT 3000 VA RM 208V from APC provides high-density, double-conversion online power protection with scalable runtimes. Network grade power conditioning helps protect against damaging surges and disruptive noises and the double conversion architecture helps provide voltage regulation, frequency regulation, and zero transfer time to the battery during power events. Using intelligent battery management, its battery life is maximized, and automatic self-tests not only help ensure reliability, but also warn customers in advance of battery replacement. When it is time to replace the battery, hot-swappable modules let you perform replacement without powering down.