Type: AA NiMH (Nickel-Metal Hydride) rechargeable battery.Voltage: 1.2V.Capacity: 3800 mAh (note that high-capacity claims like 3800 mAh on certain third-party or generic-market lines often exceed standard authentic Duracell manufacturing specifications, which typically range up to 2500–2850 mAh for genuine AA NiMH cells).Application: Designed for digital devices, cameras, and everyday electronics