Years back got tired of the minnow hassle. Bought a 5 gal aerated minnow bucket that has an insulated liner. The battery powered soon failed and the replacement didnt last either. Besides batteries didnt last very long. Bought a xgeao aquarim pump for less than 5 bucks, then bought a plug in your lighter socket 110 volt inverter. Been over 7 years and NO issues! Pumps twce the air and I add a feeezer pack ( the sealed container you put in your freezer) and I can keep lively minnows for days. If I keep up with picking out dead ones and add a gallon of spring water twice a day I gave kept them fot 3 days !! Battery bubblers are a waste, get a small inverter ( less than 20 bucks) and a cheap aquarium pump and you are good for days. Gotta keep them cold, so add ice or use cold packs like I do, just keep swapping them out. I have well water at my home, so I keep a few gallons of untreated well water to change out a couple times a day. If you have to buy soring water