A slim, faster charger with intelligent safety and technical features that charges up to four AA or AAA batteries simultaneously. The sturdy casing also serves as a battery holder, securely storing the batteries. Fully charging two batteries takes just over two hours, while four batteries require just over four hours (AA batteries 2100mAh). Power is supplied via a USB port. The two-color LED display indicates the charging status and alerts you if single-use batteries or faulty batteries are inserted. A new feature of this charger is the battery status check function. With this feature, you can quickly and easily verify whether your batteries are still adequately charged or need recharging. This way, you can avoid unexpected situations with dead batteries and prevent unnecessary overcharging. Additional safety details include an automatic power-off timer and dV full charge detection, which help prevent overcharging, overvoltage, and short circuits, as well as prolonging battery life. This versatile charger works via USB or any GP RECYKO charging dock (specifically designed for the RECYKO chargers models B441 and M452). Four AA 2600 mAh batteries are included, making this optimal charging solution well-equipped for your needs. The GP RECYKO Speed charging dock (USB) D451 4-slot NiMH with LCD charge/status display is an advanced charging station for RECYKO chargers that makes charging easier than ever. The charging station not only displays the status of your batteries more clearly but also significantly improves charging time. The unique, space-saving design of the charging station keeps the RECYKO battery charging unit vertical. It is powered via a USB port, making it ideal for use at home and in the office.