The hahnel canon type hl 2l21 74v 2100mah battery is a rechargeable lithium ion battery with no memory effect meaning you dont need to wait for its power to be fully spent before recharging as this does not affect its capacity compatible with the following canon camcoders mv5 mv5i mv5imc mv6imc mv790 mv800 mv800i mv830 mv830i mv850i mv880x mv880xi mv890