The ReliOn T-1000 hydrogen fuel cell is designed specifically for communications backup power applications. The T-1000 uses patented Modular Cartridge Technology for hot-swappable high reliability, ease of maintenance and simplicity of design. The T-1000 incorporates modular electronics cards which enable scalability by providing flexible configuration from 600 Watts to its full rated 1,200 Watt capacity. Hydrogen fuel storage enables power continuity for hours, days, weeks or longer.