Ultra Capacity (Non-OEM) Battery (5900 Mah) Chemistry: Lithium-Ion (No memory loss) Integrated microchip for communications with camcorder and charger, prevents overcharging, & lengthens battery life Includes 3 Year Replacement Warranty Compatible With Panasonic AG-VBR59 replacement Li-Ion rechargeable Intelligent battery. Rated with 5900mAh. This battery lasts 6.25 hours. This battery is made with the info chip, which shows remaining battery duration on the LCD. It may also be charged with the original charger.