I have three fence chargers at the moment:
A Zareba that I got from craigslist for $10 that works great; I've had it longer than the rest.
A Stafix from Kencove that can be plugged in to an outlet or connected to a deep cycle marine battery (great for hurricane season); that one's new but it's been very handy for outages and has exceeded my expectations.
And the problem child, a Dare that I bought from AgriSupply last October. About 2 months ago, it started making sizzling noises

and instead of pulsing it was sending juice through the fence uninterrupted. AgriSupply said bring it in, we'll fix it, no problem, no charge. Well, they fixed it, but it took a few weeks, and even though they gave me a loaner that meant two trips there & back, at $35 a trip in gas. And yesterday, it just completely gave up the ghost, no clicks, sparks, sizzles, or pulses, just dead.
AS is going to fix it again (while I wait, this time), and they assure me that Dare is top of the line and it must have been struck by lightning

, but I am not impressed. Did I get a lemon, or is this the way it goes with Dares? I know a lot of people hate Zareba, and the next one I buy will almost certainly be another Stafix, but I'd like to know if this is standard. This is the last time I'm having it fixed, I can promise you that.
Otherwise, I love AgriSupply, they have great customer service, but so does Kencove.....