Very happy with this purchase! It's a nice charger. Will charge anywhere from one to four batteries at a time and of various sizes. It doesn't come with instructions, which is a bummer if your a newbie to battery chargers! YouTube doesn't have any helpful vids either. * So here is how to operate the battery charger: On the front center of the charger there is a button under 1.0A. To the left, two columns under 0.5A, and to the right tow columns under 2.0A. The columns represent the battery slots. We load the batteries from left to right. To charge one battery, load in far left column, and push Center button until the 0.5A light is blue. To charge two batteries, load the two far left columns and push the center button until the 1.0A light is blue. To charge 3 & 4 batteries load the far right hand side columns & push the center button until the 2.0A blue light come on. The lights in the columns will flash like crazy when charging and 100%. When they hit 100% and quit flashing, your batteries are done charging. I make the process sound way more complicated than it is, but making sure you set it to the correct 0.5, 1.0, or 2.0 will charge your batteries faster. I can't give you an accurate charge time either because I use mine in an RV on a piece of property way out in the middle of nowhere. I'm on 12 volts and it takes around 30 minutes or so to charge 2 18650 batteries. Anyway, I'm loving this charger, way better than my last cheesy charger that I bought from a Vape shop.... and I never recommend buying one of those "recyclable" battery kits that you can buy like at Walmart or Target. You know the kind, they come with a little plug into the socket wall charger and 4 to 6 batteries. They are over priced garbage. Get yourself a proper charger and good batteries. A couple more bucks, but seriously my last charger lasted 5 years and I've had batteries last me for 3 and 4 years with constant charges.