A new and environmentally friendly generation of rechargeable batteries. Like many other devices, the battery can be charged via a USB-C charging port. Charging time is approx. 2 hours. An LED charging indicator shows the charging status (steady light = fully charged, flashing = charging). These new batteries can be recharged more than 1,200 times using the included USB-C charging cable. With a voltage of 1.5 V, the batteries are particularly suitable for devices with high, constant voltage requirements. Ideal for MP3 players, alarm clocks, computer accessories, wireless mice and keyboards, flashlights, remote controls, and smoke detectors. System: Lithium-ion. Voltage: 1.5 V. Contents: 4 pcs. Type AA/Pencil/HR6. Size: ? x H: 15x51mm. Weight: 18 g. Charging current: 330 mA. Energy 2100 mWh.