The N1C L-Series Lithium-Ion UPS provides and industry leading 11 minutes of runtime with internal batteries. The flexibility of additional battery cabinets offers and incredible 12+ hours of runtime in 2/3 the rack space of VRLA competitors. All N1C L-Series units are standard with internal battery monitoring, SNMP card, and 4-post rail mounting kits. With an efficient power factor of .9, online double conversion topology, and ability to withstand temperatures of 140F, the L-Series Lithium-Ion UPS can withstand the harshest of power environments.