The Nitecore D2 Charger is a great charger for all batteries ranging from AAA to 26650 batteries. It is an upgrade from the older i2 generation since it includes a full on LCD display.
This two bay charger contains a smart independent circuit so that charging different batteries simultaneously is possible. It also includes an LCD display to show the current level of charge for battery and also provides automatic voltage detection so that it does not over charge the battery. It also shows the charging voltage, charging current, and the charging time.