Review on Ultimate Dog Training Combo: KoolKani Remote Shock Collar & Underground Dog Containment Fence System by Katie Ray

Bought 18 months ago and was very happy with the collars. I bought this to replace the Sport Dog system which was starting to randomly alert dog collars and scare the poor girls. Hooked it up to an existing underground cable and worked great! I was a little worried about how long the batteries would last. We usually charge once a week but it's been 3-4 weeks now and the batteries haven't died once. They usually charge in less than 30 minutes and in our case no more than an hour. I'm sure this will depend on how often your dog checks the boundary. Ours know their limits and don't check them very often, so you can get different battery life. our old system. And the dust covers on the charging ports are difficult to remove/replace and also easy to damage (which hasn't caused any performance issues so far). Overall still very satisfied after 18 months of use.