Battery Backup

Battery backup systems are devices that maintain a continuous supply of electric power to connected equipment by supplying power from a separate source when utility power is not available. When a power failure occurs, the off-line type of UPS effectively switches from utility power to its own power source, almost instantaneously. The on-line type of UPS, which is continuously connected to the protected load, draws energy from its reserves, usually stored in lead-acid batteries, converting it to AC power. The following companies are battery backup suppliers.