It is also possible to charge batteries with different capacities simultaneously. Additionally, it is possible to charge a third device such as a mobile phone, tablet, smartphone, or camera via the integrated USB output in parallel. The built-in charging technology is microcontroller-controlled and prevents overcharging or overheating. It also automatically detects the required voltage of the inserted battery. To cover as many application areas as possible, the charger has two different charging modes: "L" for normal, battery-friendly charging and "H" for fast charging.