Deer Feeders come in a variety of shapes and sizes, along with various controls depending on your specific deer feeding needs. Complete deer feeders range in size from a 5 gallon bucket (holds about 30 lbs of corn) to 1000lb+ feeders. The more frequent you are going to be visiting your deer feeder, the smaller the feeder barrel can be. A 5 gallon feeder will last about a week, feeding 2 times a day for about 5 seconds at a time. Deer feeders run on either 6v or 12v power in the form of a battery, which can be rechargeable, and can have a solar panel hooked up to it to lengethen the charge of the battery. We sell complete deer feeders, deer feeder kits to build you own deer feeder, and parts to fix your deer feeder. Contact us if you have any questions... We are the deer feeder experts.