I just got the auto feeder this morning and tried one meal for the cat. The cat looked at it weird and sized it up for a few seconds then ate out of it. I put the Energizer brand batteries in. So for those who own this feeder, how long did the batteries last for? Of course my biggest concern is when the feeder stops rotating when the battery is dead. Also I see a square slot underneath the feeding tray. I guess thats the spot to put in an icepack?