---
type: Device Guide
title: "SNMP Monitoring for UPS (APC): Battery, Runtime & Load"
description: "Monitor a UPS over SNMP — battery charge and runtime, output load, and on-battery alarms via the standard UPS-MIB (RFC 1628), with APC PowerNet-MIB for vendor depth."
resource: "https://snmp-monitoring.info/devices/ups/"
tags: [devices]
timestamp: 2026-07-11T00:00:00Z
---

# SNMP Monitoring for UPS (APC): Battery, Runtime & Load

Monitor a UPS over SNMP — battery charge and runtime, output load, and on-battery alarms via the standard UPS-MIB (RFC 1628), with APC PowerNet-MIB for vendor depth.

## Related concepts

- Up: [SNMP by Device Type: Servers, Network Gear, UPS & More](/devices/index.md)

## Frequently asked questions

### How do I monitor a UPS with SNMP?

Give the UPS a network presence — an APC Network Management Card, or a host running PowerChute or NUT connected by USB/serial — then poll the standard UPS-MIB (1.3.6.1.2.1.33) for charge, runtime, load, and output source. Secure it with a read-only community or SNMPv3 restricted to your manager, and alert on the on-battery and low-runtime conditions that signal an outage in progress.

### What OID is the UPS runtime?

Estimated runtime is upsEstimatedMinutesRemaining in the standard UPS-MIB battery group (1.3.6.1.2.1.33.1.2). It reports the minutes of battery time left at the current load, so it shrinks as load rises. Pair it with upsEstimatedChargeRemaining (charge percentage) and upsOutputSource (mains vs battery) for the full runtime picture during an outage.

### How do I alert when the UPS is on battery power?

Poll upsOutputSource (UPS-MIB output group, 1.3.6.1.2.1.33.1.4) frequently and alert the moment it changes to a battery source — that's your mains-failure signal. Combine it with a low-runtime alert on upsEstimatedMinutesRemaining so you know both that you're on battery and how long you have before a graceful shutdown becomes necessary.

### Should I use the standard UPS-MIB or APC's PowerNet-MIB?

Use both, for different jobs. The standard UPS-MIB (RFC 1628) gives you vendor-neutral metrics — charge, runtime, load, on-battery — so a mixed UPS fleet monitors with one template. APC's PowerNet-MIB (enterprise 1.3.6.1.4.1.318) adds APC-specific depth like detailed diagnostics and environmental probes. Start with the standard MIB for portability and reach into PowerNet where you need the extra detail.

## Source

Concept generated from https://snmp-monitoring.info/devices/ups/ — the SNMP Monitoring vendor-neutral knowledge base. Content is limited to what that page states (no external claims added here).