With IPHost Network Monitor you can run simple snmp requests against a Liebert device in your network.
lcUpsOutputNumLines
Liebert Ups Output Num Lines
1.3.6.1.4.1.476.1.1.1.1.4.3
The number of output lines utilized in this device. This entry indicates the number of rows in the output table.
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IPHost Network monitor allows you to monitor lcUpsOutputNumLines on Liebert device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Liebert uninterruptible power supplies right now.