I would spend a little more and get a reputable brand.
http://www.tractorsupply.com/en/store/zarebareg;-2-mile-solar-fence-charger
Some harbor freight tools are okay....some are not. In my experience, their pnuematic tools are pretty good, but anything with a cord seems to burn up pretty quick.
I would agree with this also. They are decent cheap tools, but I would not rely on them to stay functional when you really need them. Such as an electric fence to keep your birds safe.
Alex