--- a/lib/arborist/monitor/snmp/ups/battery.rb	Sun Sep 01 13:28:18 2019 -0700
+++ b/lib/arborist/monitor/snmp/ups/battery.rb	Tue Apr 28 10:10:19 2020 -0700
@@ -104,7 +104,7 @@
 	def check_battery( host, snmp )
 		info = self.format_battery( snmp )
 
-		config    = identifiers[ host ].last || {}
+		config    = self.identifiers[ host ].last['config'] || {}
 		cap_warn  = config[ 'capacity_warn_at' ] || self.class.capacity_warn_at
 		temp_warn = config[ 'temperature_warn_at' ] || self.class.temperature_warn_at