Especially small and light travel charger Eneloop is designed for charging up to 4 AA or AAA batteries. The two-part LED provides a pleasant feedback when the batteries inserted are fully charged. The charger does not necessarily need a power outlet - it does not have a power cord. As a power source, the charger can use almost any USB port - in a PC, laptop or powerbank. If you want to traditionally power the charger in an electrical outlet, you can use existing USB power adapters (such as from a telephone) and connect them directly to the supplied USB cable.
The charger has a protective mechanism that will turn off the charger after about 10 hours from connecting the charger to the power supply. The charger has two LEDs. The LEDs light up during charging and go out when the protective mechanism switches off the charger.