The UPS Replacement Battery is used to swap the old battery pack from a UPS – uninterruptible power supply or uninterruptible power source (UPS). The UPS is an electrical apparatus that provides emergency power to a load when the input power source or mains power fails. A UPS differs from an auxiliary or emergency power system or standby generator in that it will provide near-instantaneous protection from input power interruptions, by supplying energy stored in batteries, super-capacitors, or flywheels. The on-battery run-time of most uninterruptible power sources is relatively short (only a few minutes) but sufficient to start a standby power source or properly shut down the protected equipment. It is a type of continual power system.
The UPS Replacement Battery or UPS Replacement Battery Kit contains only the battery elements that are needed for the UPS to function.