I've always been curious about these things and finally decided to get it. The price was great. the built in charger is actually really cool since it can just hang on the wall. Regular fly swatters are just gross. There is a satisfying snap/pop noise when you nab one and its really addicting. Getting multiple flys in one pass is even more awesome. If you've ever been curious to get one of these, but for some reason have been hung up, I have to say that it's totally worth it and you'll enjoy using it too. You'll be disappointed when you start running out of flies to kill.
No compatibility issues just plugged and played. My old battery wouldn't even hold a charge anymore, and would just die instantly. So glad I found this deal. I didn't want to get gouged by OEMs to buy a replacement battery.