librenms-librenms/includes/discovery/sensors/charge/apc.inc.php

<?php

if ($device['os'] == 'apc') {
    $oids = snmp_get($device, '.1.3.6.1.4.1.318.1.1.1.2.3.1.0', '-OsqnU', '');
    d_echo($oids."\n");

    // Try High-Precision First
    if (!empty($oids)) {
        echo 'APC UPS Battery Charge High Precision';
        $type               = 'apc';
        list($oid,$current) = explode(' ', $oids);

        $precision   = 10;
        $sensorType  = 'apc';
        $current_oid = '.1.3.6.1.4.1.318.1.1.1.2.3.1.0';
        $index       = 0;
        $current_val = ($current / $precision);
        $limit       = 100;
        $lowlimit    = 0;
        $warnlimit   = 10;
        $descr       = 'Battery Charge';

        discover_sensor($valid['sensor'], 'charge', $device, $current_oid, $index, $sensorType, $descr, $precision, '1', $lowlimit, $warnlimit, null, $limit, $current_val);
    } else {
        // Try to just get capacity
        $oids = snmp_get($device, '.1.3.6.1.4.1.318.1.1.1.2.2.1.0', '-OsqnU', '');
        d_echo($oids."\n");

        if (!empty($oids)) {
            echo 'APC UPS Battery Charge';
            $type               = 'apc';
            list($oid,$current) = explode(' ', $oids);

            $precision   = 1;
            $sensorType  = 'apc';
            $current_oid = '.1.3.6.1.4.1.318.1.1.1.2.2.1.0';
            $index       = 0;
            $current_val = $current;
            $limit       = 100;
            $lowlimit    = 0;
            $warnlimit   = 10;
            $descr       = 'Battery Charge';

            discover_sensor($valid['sensor'], 'charge', $device, $current_oid, $index, $sensorType, $descr, $precision, '1', $lowlimit, $warnlimit, null, $limit, $current_val);
        }
    }//end if
}//end if