Took my HL Tiger and KV1 into work today to check out control distances without interferrence from surrounding buildings. The KV1 worked out to 50 or 60 ft or so in the car park, the Tiger only 10 ft at best. Having brought them home tonight I found the batteries in the controller for the Tiger to be very warm despite it having been switched off for some 6 hours. The batteries are new blue Energizers. Any ideas?

Martin