ADTRAN 1175044L2 Battery Backup Hinged 48V Module

ADTRAN 1175044L2 Battery Backup Hinged 48V Module is a wall-mount battery backup unit (BBU) for ADTRAN Total Access telecom platforms, configured with a hinged front-access door for easy service. It houses a 7 Ah, 48 VDC battery and, depending on load, provides up to 8 hours of backup power. The no-spill design and compact enclosure are built for fixed wall installation, with wall-mount hardware included and a modular plug setup for quick connect. A 6-foot charge/discharge cable (2-conductor) with a keyed modular plug is included to simplify integration with compatible TA equipment. Weighing in excess of 30 pounds, the unit is designed as a dedicated backup power accessory rather than a primary supply. The 1175044L2 is the hinged, wall-mount variant of the 1175044L1 and is documented as compatible with Total Access models such as TA 750/850 and TA 916/924, with ADTRAN installation guides describing it as the wall-mount BBU option for 3rd-generation TA hardware. In typical installations, it serves to maintain service during power interruptions by supplying a secondary DC source to the connected network gear, aligning with reseller and price-list descriptions that specify an 48 V, 7 Ah/8-hour backup capability.