I bought this so I could charge more than one controller at a time and be able to easily see when the controllers are ready to use. The docks are super easy to get the controller in and out of. Each dock lights up red when you put a controller in and stays red until it's fully charged, when it turns green. Leaving the controller on after it's fully charged does not overcharge the controller and kill its battery. The only problem I've had (and it's a minor one, really) is that on occasion, I will put a drained controller on to charge but the light turns green almost immediately and the controller won't charge. Just disconnect the charger from the wall for a few seconds and plug it back in and the problem is fixed. Don't know why it does this but it's not a big deal, just annoying. The only thing that would make this a 5 star product is a lower price.