I do not think the battery chargers could now tell you where you are in the charging of the battery. Well actually yes, it has a LCD screen with a small drawing of the stack.
If the battery is empty, there is no bar and as a mobile phone, the battery on the screen fills up and when charging.
This charger charges both batteries or Li-Onh conventional NI-Mh, it automatically recognizes. You may also charge 1 or 4 batteries at once. It was at the card and it's really convenient. You can also do a load test, which is nice.
This surprised me a beep when the battery is charged and several times in a row. Frankly, do not put the batteries to charge overnight.
In addition, this charger is supplied with a cigarette lighter and I say THANK YOU. Because, in a camper, I love. Who has not lamp, toy or other bits that need to recharge the batteries and it is not always near a store: and there, I can confidently grasp future trips because my battery charger will travel in the camper.