Fellars this feeder has been discussed many times. Called many diff things made by BA products I got one still but fixed three times. It has impeller and throws very little food as mentioned. Budster states 1/2lb in 40 seconds. So if wanting to feed small amounts give it a try. If feeding as many of us do not the feeder for that. it will kill the battery at multiple times per day for that long a period.
This unit has a timer with 9 set times up to 99 seconds each = 11.1 #'s of food at 1/2# per 40 seconds. I doubt you feed more than that at each feeder.
As for batteries that's why God gave us solar chargers.
