Maxtek 4.5hr Rechargeable Battery For Canon BP-827 BP827(Extended Capacity of BP-808 809 819) HF10 HF1 HF100 HF20 HF200 S10 HG20 HG21 HG30. Made with Info-Chip, Use same as original OEM. Shows time on LCD and charges by camcorder! Made with info-chip, which can show remaining time on camcorder LCD. It also can be charged by Canon original charger and camcorder. 100% Compatible with original manufacturer equipments and chargers, guaranteed! Integrated microchip prevents overcharging, overheat & provide short circuit protection. 7.4v 3400mAh One year USA warranty!