Thank you for viewing. This is a valuable item, so it's first-come, first-served. Canon Charger, Dual Compatible batteries: BP-511 / BP-512 / BP-511A / BP-514 (according to the Camera Kitamura website) Even with two batteries, the second battery will start charging after the first one is finished. (They cannot be charged simultaneously.) I have not been able to confirm the charging with two batteries installed. Please understand the above, and also understand that this is a used item before purchasing. 421