Minuteman 72VDC8.5AH battery pack with internal charger that extends runtime on the E2000RM2U through E3000RM(T)2U unitsStand for a tower configuration as well as fittings for a 19-inch rackRotating LED panel to match orientation for horizontal/rack, tower or wallmount unitsAC and circuit breaker LEDs display status of AC charger and battery pack DC breakerMultiple battery packs may be daisychained together for unlimited runtimeInternal AC charger recharges battery pack quickly after dischargeMMEBP72XL