So far it has done what it says it does. My battery hasn't gone bad yet so I can't say whether that part works. My current battery health is 64% according to it.
Battery bug:
A great way to know what kind of shape your battery is in before it lets you down.
great product:
Much better than just the stock battery charge gauge, installs easy, looks good. I have an old mustang, doesnt get driven much so this really helps to keep an eye on things. Would be nice to have a remote monitor kit that mounts inside the passenger compartment though, I'd mount that in my glove box or something, but over all a really good product that will keep you from getting stranded!
Battery Bug works:
I just tried the battery bug for the first time this weekend. It appears to work as advertised.
You attach it to the battery terminals and it gives you a count down while it boots up. It then gives you the battery's voltage output (volts). Then you start up the vehicle and it gives you a per centage rating of your battery. the bug flashes between percent and the batteries output voltage. When the vehicle is turned off, the bug continues to flash between the startup percentage and the battery's output... more info
