ENERGY STAR is a quality certification label that can be awarded to energy-saving electronic devices. To achieve this, chargers must not exceed the prescribed levels of energy consumption and charging efficiency, which means that such chargers save energy with an exceptionally high level of energy utilization efficiency.

- Blue LCD display
- Function for checking the switched-on state
- It can be used to charge up to 4 batteries at the same time
- 2/4 AA size or 2/4 AAA size battery
- Fast charging (2-4 hours charging time)
- Desktop design
- Operation from a USB port (e.g. via a laptop).
- Suitable for any nominal mains voltage (100-240 V) used in countries around the world
- Trickle charging (keeping the state of charge at the same level: the battery is charged with a current roughly equal to its self-discharge value)
- Detection of inserted battery unsuitable for charging (alkaline battery) or incorrect polarity
- Minus Delta V (this function is based on the fact that the voltage of a fully charged battery drops only slightly)
- Temperature control
- Overcharge protection time switch