The APC SRT192BP2 is an extended-run external battery pack rated at 1920 volt-amp-hours (VAh), designed specifically to add runtime to APC's Smart-UPS SRT10KRMXLI, SRT10KXLI, SRT8KRMXLI and SRT8KXLI models — high-capacity 8kVA/10kVA UPS units typically found protecting server rooms and rack infrastructure. It supports the SURTRK2 rackmount kit, letting it be mounted alongside its host UPS in a standard server rack rather than sitting as a separate floor-standing unit. This is a direct accessory purchase for an organisation that already owns (or is buying) one of the four listed compatible UPS models and needs longer battery autonomy during power outages or extended load-shedding.