I love this charger because of the safety Features it has from crossing the positive and negative together great for wife if she needs to use it right away when I am over seas . The security it gives me that it’s charging my car battery and maintain it . I was ready to purchase the BMW one that looks just like CTEK so I read all the reviews on both I was up in the air with the one I wanted to purchase but my good friend bought the BMW one so I then Odered CTEK so I found one with all the Accessories that you get with BMW but only half of the stuff . So I received it right away and I put it on my car immediately put it on Recondition my battery I wanted to that because battery for BMW are expensive no matter the brand. So within 2 days my battery was reconditioned and then I switched it to maintain and has been working properly and great. Then we compared BMW and CTEK it was the same exact charger only difference is one has BMW on it the other CTEK and both worked same outstanding but the big difference was the price. And upon further investigation has same part number so we then figure BMW puts there names on the CTEK one and it sells for more money but you get same great out come . So if you want a great charger for half the price of different name brand then this is your charger. It’s easy to use and safe for wife’s to use without burning out your charger our battery. I will be buying another one for my boat . Great charger.