External Li-ion battery pack with up to 10 years of service life Max. 2 battery packs can be connected Suitable for APC Smart-UPS SRVL 1-3 kVA Li-ion UPS systems Can be used as a spare battery or to extend runtime Incl. 2 U rack installation kit Weight: approx. 30 kg Additional runtimes: 2700 W load: + 45 Minutes 2000 W load: + 60 Minutes 1350 W load: + 81 Minutes 1000 W load: + 107 Minutes