External 48VDC 17Ah Battery Pack Use with Endeavor models ED1500RM2U, ED1500RMT2U, ED2000RM2U, and ED2000RMT2U Internal AC charger recharges battery pack quickly after dischargeMultiple battery packs may be daisy chained together for unlimited runtimeAC and circuit breaker LEDs display status of AC charger and battery pack breakerRotating front panel to match orientation for horizontal/rack, tower or wallmount unitsStand for a tower configuration as well as fittings for a 19-inch rack23-inch rack and wallm